From 8f5c16e327a49acc513a049395fbefc7057cbd0d Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Sat, 15 Jun 2024 18:38:25 +0300
Subject: [PATCH 01/13] Add GitHub Actions workflow that runs tests on a PR

---
 .github/workflows/pr.yml | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 .github/workflows/pr.yml

diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
new file mode 100644
index 00000000..b4568988
--- /dev/null
+++ b/.github/workflows/pr.yml
@@ -0,0 +1,19 @@
+name: Continuous Integration
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: 1.22
+
+      - name: Run tests
+        run: go test -v ./...

From 8434897cbccb504886f141d23923b2864f509702 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Sat, 15 Jun 2024 18:40:47 +0300
Subject: [PATCH 02/13] Remove all _content/tour/*/content_test.go files except
 eng

---
 _content/tour/fre/content_test.go | 89 -------------------------------
 _content/tour/ger/content_test.go | 89 -------------------------------
 _content/tour/grc/content_test.go | 89 -------------------------------
 _content/tour/ita/content_test.go | 89 -------------------------------
 _content/tour/per/content_test.go | 89 -------------------------------
 _content/tour/pol/content_test.go | 89 -------------------------------
 _content/tour/por/content_test.go | 89 -------------------------------
 _content/tour/rus/content_test.go | 89 -------------------------------
 _content/tour/tur/content_test.go | 89 -------------------------------
 9 files changed, 801 deletions(-)
 delete mode 100644 _content/tour/fre/content_test.go
 delete mode 100644 _content/tour/ger/content_test.go
 delete mode 100644 _content/tour/grc/content_test.go
 delete mode 100644 _content/tour/ita/content_test.go
 delete mode 100644 _content/tour/per/content_test.go
 delete mode 100644 _content/tour/pol/content_test.go
 delete mode 100644 _content/tour/por/content_test.go
 delete mode 100644 _content/tour/rus/content_test.go
 delete mode 100644 _content/tour/tur/content_test.go

diff --git a/_content/tour/fre/content_test.go b/_content/tour/fre/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/fre/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/ger/content_test.go b/_content/tour/ger/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/ger/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/grc/content_test.go b/_content/tour/grc/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/grc/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/ita/content_test.go b/_content/tour/ita/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/ita/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/per/content_test.go b/_content/tour/per/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/per/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/pol/content_test.go b/_content/tour/pol/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/pol/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/por/content_test.go b/_content/tour/por/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/por/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/rus/content_test.go b/_content/tour/rus/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/rus/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}
diff --git a/_content/tour/tur/content_test.go b/_content/tour/tur/content_test.go
deleted file mode 100644
index 6c7b22d4..00000000
--- a/_content/tour/tur/content_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2016 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package content
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
-)
-
-// Test that all the .go files inside the content file build
-// and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
-func TestContent(t *testing.T) {
-	if _, err := exec.LookPath("go"); err != nil {
-		t.Skipf("skipping because 'go' executable not available: %v", err)
-	}
-
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
-		}
-		if filepath.Base(path) == "content_test.go" {
-			return nil
-		}
-		t.Run(path, func(t *testing.T) {
-			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
-				t.Errorf("%v: %v", path, err)
-			}
-		})
-		return nil
-	})
-	if err != nil {
-		t.Error(err)
-	}
-}
-
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
-	if err != nil {
-		return err
-	}
-
-	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
-	}
-	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
-	}
-
-	if strings.Contains(build, "no-build") {
-		return nil
-	}
-	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
-	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
-	}
-	defer os.Remove(bin)
-
-	if strings.Contains(build, "no-run") {
-		return nil
-	}
-	out, err = exec.Command(bin).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("%v\nOutput:\n%s", err, out)
-	}
-	return nil
-}

From 280049b5e4b84128c0269dc9522bbbc6f3416f1e Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Sat, 15 Jun 2024 19:07:45 +0300
Subject: [PATCH 03/13] Move _content/tour/eng/content_test.go to the root

Fix package name: content -> website.
Walk over _content/tour instead of .
---
 _content/tour/eng/content_test.go => content_test.go | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
 rename _content/tour/eng/content_test.go => content_test.go (89%)

diff --git a/_content/tour/eng/content_test.go b/content_test.go
similarity index 89%
rename from _content/tour/eng/content_test.go
rename to content_test.go
index 6c7b22d4..3894f049 100644
--- a/_content/tour/eng/content_test.go
+++ b/content_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package content
+package website
 
 import (
 	"bytes"
@@ -14,9 +14,6 @@ import (
 	"path/filepath"
 	"strings"
 	"testing"
-
-	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
-	_ "github.com/ardanlabs/gotour/external/tour/wc"
 )
 
 // Test that all the .go files inside the content file build
@@ -34,7 +31,7 @@ func TestContent(t *testing.T) {
 	}
 	defer os.RemoveAll(scratch)
 
-	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+	err = filepath.Walk(filepath.Join("_content", "tour"), func(path string, fi os.FileInfo, err error) error {
 		if filepath.Ext(path) != ".go" {
 			return nil
 		}

From c90686b367edf2c5b5ed595338d9ee7d17a3ba4c Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Sat, 15 Jun 2024 19:46:23 +0300
Subject: [PATCH 04/13] Replace deprecated io/ioutil with os

---
 content_test.go | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/content_test.go b/content_test.go
index 3894f049..46ae9d7c 100644
--- a/content_test.go
+++ b/content_test.go
@@ -8,7 +8,6 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -25,13 +24,7 @@ func TestContent(t *testing.T) {
 		t.Skipf("skipping because 'go' executable not available: %v", err)
 	}
 
-	scratch, err := ioutil.TempDir("", "tour-content-test")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(scratch)
-
-	err = filepath.Walk(filepath.Join("_content", "tour"), func(path string, fi os.FileInfo, err error) error {
+	err := filepath.Walk(filepath.Join("_content", "tour"), func(path string, fi os.FileInfo, err error) error {
 		if filepath.Ext(path) != ".go" {
 			return nil
 		}
@@ -40,7 +33,7 @@ func TestContent(t *testing.T) {
 		}
 		t.Run(path, func(t *testing.T) {
 			t.Parallel()
-			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+			if err := testSnippet(filepath.ToSlash(path), t.TempDir()); err != nil {
 				t.Errorf("%v: %v", path, err)
 			}
 		})
@@ -51,8 +44,8 @@ func TestContent(t *testing.T) {
 	}
 }
 
-func testSnippet(t *testing.T, path, scratch string) error {
-	b, err := ioutil.ReadFile(path)
+func testSnippet(path, scratch string) error {
+	b, err := os.ReadFile(path)
 	if err != nil {
 		return err
 	}

From 8b5cff794deea4a6366aacccbc3d8a64d9176b95 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Sat, 15 Jun 2024 19:48:11 +0300
Subject: [PATCH 05/13] Fix test by replacing // +build with //go:build

---
 content_test.go | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/content_test.go b/content_test.go
index 46ae9d7c..18f0e847 100644
--- a/content_test.go
+++ b/content_test.go
@@ -17,8 +17,8 @@ import (
 
 // Test that all the .go files inside the content file build
 // and execute (without checking for output correctness).
-// Files that contain the string "// +build no-build" are not built.
-// Files that contain the string "// +build no-run" are not executed.
+// Files that contain the build constraint "nobuild" are not built.
+// Files that contain the build constraint "norun" are not executed.
 func TestContent(t *testing.T) {
 	if _, err := exec.LookPath("go"); err != nil {
 		t.Skipf("skipping because 'go' executable not available: %v", err)
@@ -51,14 +51,14 @@ func testSnippet(path, scratch string) error {
 	}
 
 	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
-	if !strings.HasPrefix(build, "// +build ") {
-		return errors.New("first line is not a +build comment")
+	if !strings.HasPrefix(build, "//go:build ") {
+		return errors.New("first line is not a go:build comment")
 	}
 	if !strings.Contains(build, "OMIT") {
-		return errors.New(`+build comment does not contain "OMIT"`)
+		return errors.New(`go:build comment does not contain "OMIT"`)
 	}
 
-	if strings.Contains(build, "no-build") {
+	if strings.Contains(build, "nobuild") {
 		return nil
 	}
 	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
@@ -68,7 +68,7 @@ func testSnippet(path, scratch string) error {
 	}
 	defer os.Remove(bin)
 
-	if strings.Contains(build, "no-run") {
+	if strings.Contains(build, "norun") {
 		return nil
 	}
 	out, err = exec.Command(bin).CombinedOutput()

From 59e85f161b8bc4fc15b0efc542ad49762269abed Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Sat, 15 Jun 2024 19:49:38 +0300
Subject: [PATCH 06/13] Rename TestContent to TestContentTour

---
 content_test.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content_test.go b/content_test.go
index 18f0e847..719c6dae 100644
--- a/content_test.go
+++ b/content_test.go
@@ -19,7 +19,7 @@ import (
 // and execute (without checking for output correctness).
 // Files that contain the build constraint "nobuild" are not built.
 // Files that contain the build constraint "norun" are not executed.
-func TestContent(t *testing.T) {
+func TestContentTour(t *testing.T) {
 	if _, err := exec.LookPath("go"); err != nil {
 		t.Skipf("skipping because 'go' executable not available: %v", err)
 	}

From c0b7daa1f6e92fe239f2f8ec838988dd5c72ec1c Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Sat, 15 Jun 2024 19:53:07 +0300
Subject: [PATCH 07/13] Fix tests in eng

---
 _content/tour/eng/algorithms/fun/freq_concurrent.go      | 2 ++
 _content/tour/eng/arrays/example2.go                     | 2 +-
 _content/tour/eng/composition/assertions/example1.go     | 2 +-
 _content/tour/eng/composition/decoupling/exercise1.go    | 2 +-
 _content/tour/eng/composition/grouping/example1.go       | 2 +-
 _content/tour/eng/composition/mocking/example1.go        | 2 +-
 _content/tour/eng/constants/example4.go                  | 2 +-
 _content/tour/eng/context/exercise1.go                   | 2 +-
 _content/tour/eng/data_race/example5.go                  | 2 +-
 _content/tour/eng/data_race/example6.go                  | 2 +-
 _content/tour/eng/error-handling/example4.go             | 2 +-
 _content/tour/eng/error-handling/example5.go             | 2 +-
 _content/tour/eng/error-handling/exercise1.go            | 2 +-
 _content/tour/eng/error-handling/exercise2.go            | 2 +-
 _content/tour/eng/exporting/answer1.go                   | 2 +-
 _content/tour/eng/exporting/example1.go                  | 2 +-
 _content/tour/eng/exporting/example2.go                  | 2 +-
 _content/tour/eng/exporting/example3.go                  | 2 +-
 _content/tour/eng/exporting/example4.go                  | 2 +-
 _content/tour/eng/exporting/example5.go                  | 2 +-
 _content/tour/eng/exporting/exercise1.go                 | 2 +-
 _content/tour/eng/generics/type-constraints/exercise1.go | 2 +-
 _content/tour/eng/interfaces/example2.go                 | 2 +-
 _content/tour/eng/interfaces/example3.go                 | 2 +-
 _content/tour/eng/interfaces/example4.go                 | 2 +-
 _content/tour/eng/interfaces/example6.go                 | 2 +-
 _content/tour/eng/maps/example3.go                       | 2 +-
 _content/tour/eng/maps/example6.go                       | 2 +-
 _content/tour/eng/methods/example5.go                    | 2 +-
 _content/tour/eng/methods/exercise1.go                   | 2 +-
 _content/tour/eng/slices/example1.go                     | 2 +-
 _content/tour/eng/slices/example8.go                     | 2 +-
 _content/tour/eng/welcome/sandbox.go                     | 2 ++
 33 files changed, 35 insertions(+), 31 deletions(-)

diff --git a/_content/tour/eng/algorithms/fun/freq_concurrent.go b/_content/tour/eng/algorithms/fun/freq_concurrent.go
index 3b91df41..edfa678f 100644
--- a/_content/tour/eng/algorithms/fun/freq_concurrent.go
+++ b/_content/tour/eng/algorithms/fun/freq_concurrent.go
@@ -1,3 +1,5 @@
+//go:build OMIT
+
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
 
diff --git a/_content/tour/eng/arrays/example2.go b/_content/tour/eng/arrays/example2.go
index ce6e4299..5c41c454 100644
--- a/_content/tour/eng/arrays/example2.go
+++ b/_content/tour/eng/arrays/example2.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/composition/assertions/example1.go b/_content/tour/eng/composition/assertions/example1.go
index 5d1191cb..f0e81147 100644
--- a/_content/tour/eng/composition/assertions/example1.go
+++ b/_content/tour/eng/composition/assertions/example1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/composition/decoupling/exercise1.go b/_content/tour/eng/composition/decoupling/exercise1.go
index db2f3a41..98bd38df 100644
--- a/_content/tour/eng/composition/decoupling/exercise1.go
+++ b/_content/tour/eng/composition/decoupling/exercise1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/composition/grouping/example1.go b/_content/tour/eng/composition/grouping/example1.go
index 474b91ca..59d0bea8 100644
--- a/_content/tour/eng/composition/grouping/example1.go
+++ b/_content/tour/eng/composition/grouping/example1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/composition/mocking/example1.go b/_content/tour/eng/composition/mocking/example1.go
index e72930c1..445b6e18 100644
--- a/_content/tour/eng/composition/mocking/example1.go
+++ b/_content/tour/eng/composition/mocking/example1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/constants/example4.go b/_content/tour/eng/constants/example4.go
index 1b735f9c..64560df1 100644
--- a/_content/tour/eng/constants/example4.go
+++ b/_content/tour/eng/constants/example4.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/context/exercise1.go b/_content/tour/eng/context/exercise1.go
index d7225c6c..cf7d6224 100644
--- a/_content/tour/eng/context/exercise1.go
+++ b/_content/tour/eng/context/exercise1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/data_race/example5.go b/_content/tour/eng/data_race/example5.go
index dd7cb0fc..fda16cd5 100644
--- a/_content/tour/eng/data_race/example5.go
+++ b/_content/tour/eng/data_race/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/data_race/example6.go b/_content/tour/eng/data_race/example6.go
index 61243b57..8ab7578d 100644
--- a/_content/tour/eng/data_race/example6.go
+++ b/_content/tour/eng/data_race/example6.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/error-handling/example4.go b/_content/tour/eng/error-handling/example4.go
index 40f8303e..5e2e7f48 100644
--- a/_content/tour/eng/error-handling/example4.go
+++ b/_content/tour/eng/error-handling/example4.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/error-handling/example5.go b/_content/tour/eng/error-handling/example5.go
index de920b11..4c677b32 100644
--- a/_content/tour/eng/error-handling/example5.go
+++ b/_content/tour/eng/error-handling/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/error-handling/exercise1.go b/_content/tour/eng/error-handling/exercise1.go
index 0fb21e45..378257d8 100644
--- a/_content/tour/eng/error-handling/exercise1.go
+++ b/_content/tour/eng/error-handling/exercise1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/error-handling/exercise2.go b/_content/tour/eng/error-handling/exercise2.go
index 59310aa9..e2883ef2 100644
--- a/_content/tour/eng/error-handling/exercise2.go
+++ b/_content/tour/eng/error-handling/exercise2.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/exporting/answer1.go b/_content/tour/eng/exporting/answer1.go
index f0abc4c6..dcd28e17 100644
--- a/_content/tour/eng/exporting/answer1.go
+++ b/_content/tour/eng/exporting/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/exporting/example1.go b/_content/tour/eng/exporting/example1.go
index 5cd1820c..a828b2f6 100644
--- a/_content/tour/eng/exporting/example1.go
+++ b/_content/tour/eng/exporting/example1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/exporting/example2.go b/_content/tour/eng/exporting/example2.go
index cec2201e..91735097 100644
--- a/_content/tour/eng/exporting/example2.go
+++ b/_content/tour/eng/exporting/example2.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/exporting/example3.go b/_content/tour/eng/exporting/example3.go
index 00a1dda7..1ba82103 100644
--- a/_content/tour/eng/exporting/example3.go
+++ b/_content/tour/eng/exporting/example3.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/exporting/example4.go b/_content/tour/eng/exporting/example4.go
index f2b0174a..93d06902 100644
--- a/_content/tour/eng/exporting/example4.go
+++ b/_content/tour/eng/exporting/example4.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/exporting/example5.go b/_content/tour/eng/exporting/example5.go
index 70da23ed..8ae0fa09 100644
--- a/_content/tour/eng/exporting/example5.go
+++ b/_content/tour/eng/exporting/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/exporting/exercise1.go b/_content/tour/eng/exporting/exercise1.go
index bafbd5a5..4ff23346 100644
--- a/_content/tour/eng/exporting/exercise1.go
+++ b/_content/tour/eng/exporting/exercise1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/generics/type-constraints/exercise1.go b/_content/tour/eng/generics/type-constraints/exercise1.go
index 01dd1324..13c74e40 100644
--- a/_content/tour/eng/generics/type-constraints/exercise1.go
+++ b/_content/tour/eng/generics/type-constraints/exercise1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/interfaces/example2.go b/_content/tour/eng/interfaces/example2.go
index a9e10aa4..3b56f6fd 100644
--- a/_content/tour/eng/interfaces/example2.go
+++ b/_content/tour/eng/interfaces/example2.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/interfaces/example3.go b/_content/tour/eng/interfaces/example3.go
index 2ed6c756..cbd2a139 100644
--- a/_content/tour/eng/interfaces/example3.go
+++ b/_content/tour/eng/interfaces/example3.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/interfaces/example4.go b/_content/tour/eng/interfaces/example4.go
index acb8e2f6..e8cab8ba 100644
--- a/_content/tour/eng/interfaces/example4.go
+++ b/_content/tour/eng/interfaces/example4.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/interfaces/example6.go b/_content/tour/eng/interfaces/example6.go
index 68825182..5187153e 100644
--- a/_content/tour/eng/interfaces/example6.go
+++ b/_content/tour/eng/interfaces/example6.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/maps/example3.go b/_content/tour/eng/maps/example3.go
index a1fb2fa6..a9913573 100644
--- a/_content/tour/eng/maps/example3.go
+++ b/_content/tour/eng/maps/example3.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/maps/example6.go b/_content/tour/eng/maps/example6.go
index bfffd74e..e79d9f1a 100644
--- a/_content/tour/eng/maps/example6.go
+++ b/_content/tour/eng/maps/example6.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/methods/example5.go b/_content/tour/eng/methods/example5.go
index fb0d8cf7..13275785 100644
--- a/_content/tour/eng/methods/example5.go
+++ b/_content/tour/eng/methods/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/methods/exercise1.go b/_content/tour/eng/methods/exercise1.go
index 555d0ef1..8e09f37c 100644
--- a/_content/tour/eng/methods/exercise1.go
+++ b/_content/tour/eng/methods/exercise1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || nobuild
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/slices/example1.go b/_content/tour/eng/slices/example1.go
index 36f418d4..f86c3764 100644
--- a/_content/tour/eng/slices/example1.go
+++ b/_content/tour/eng/slices/example1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/slices/example8.go b/_content/tour/eng/slices/example8.go
index af4361da..ad9b748d 100644
--- a/_content/tour/eng/slices/example8.go
+++ b/_content/tour/eng/slices/example8.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/eng/welcome/sandbox.go b/_content/tour/eng/welcome/sandbox.go
index 183bb929..9525b562 100644
--- a/_content/tour/eng/welcome/sandbox.go
+++ b/_content/tour/eng/welcome/sandbox.go
@@ -1,3 +1,5 @@
+//go:build OMIT
+
 package main
 
 import (

From 05f63ef2aeedccbe05ea0270de5f836d6c5f6441 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Tue, 25 Jun 2024 17:04:38 +0300
Subject: [PATCH 08/13] Do not run maps/example8.go

---
 _content/tour/eng/maps/example8.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/_content/tour/eng/maps/example8.go b/_content/tour/eng/maps/example8.go
index 359f752a..0d72d9e7 100644
--- a/_content/tour/eng/maps/example8.go
+++ b/_content/tour/eng/maps/example8.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0

From 7cab71e305b810b2a272696515a575bf49052504 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Tue, 25 Jun 2024 17:08:15 +0300
Subject: [PATCH 09/13] Do not run channels/example10.go

---
 _content/tour/eng/channels/example10.go | 2 +-
 _content/tour/fre/channels/example10.go | 2 +-
 _content/tour/ger/channels/example10.go | 2 +-
 _content/tour/grc/channels/example10.go | 2 +-
 _content/tour/ita/channels/example10.go | 2 +-
 _content/tour/per/channels/example10.go | 2 +-
 _content/tour/pol/channels/example10.go | 2 +-
 _content/tour/por/channels/example10.go | 2 +-
 _content/tour/rus/channels/example10.go | 2 +-
 _content/tour/tur/channels/example10.go | 2 +-
 10 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/_content/tour/eng/channels/example10.go b/_content/tour/eng/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/eng/channels/example10.go
+++ b/_content/tour/eng/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/fre/channels/example10.go b/_content/tour/fre/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/fre/channels/example10.go
+++ b/_content/tour/fre/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ger/channels/example10.go b/_content/tour/ger/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/ger/channels/example10.go
+++ b/_content/tour/ger/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/grc/channels/example10.go b/_content/tour/grc/channels/example10.go
index 9155ba82..e7c6e22d 100644
--- a/_content/tour/grc/channels/example10.go
+++ b/_content/tour/grc/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // Όλα τα υλικά είναι αδειοδοτημένα υπό την Άδεια Apache Έκδοση 2.0, Ιανουάριος 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ita/channels/example10.go b/_content/tour/ita/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/ita/channels/example10.go
+++ b/_content/tour/ita/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/per/channels/example10.go b/_content/tour/per/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/per/channels/example10.go
+++ b/_content/tour/per/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/pol/channels/example10.go b/_content/tour/pol/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/pol/channels/example10.go
+++ b/_content/tour/pol/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/por/channels/example10.go b/_content/tour/por/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/por/channels/example10.go
+++ b/_content/tour/por/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/rus/channels/example10.go b/_content/tour/rus/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/rus/channels/example10.go
+++ b/_content/tour/rus/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/tur/channels/example10.go b/_content/tour/tur/channels/example10.go
index e680c74a..ed01faa0 100644
--- a/_content/tour/tur/channels/example10.go
+++ b/_content/tour/tur/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0

From c42f63f10e798f8982819f68158648598f9aebd8 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Tue, 25 Jun 2024 17:08:43 +0300
Subject: [PATCH 10/13] Do not run context/answer1.go

---
 _content/tour/eng/context/answer1.go | 2 +-
 _content/tour/fre/context/answer1.go | 2 +-
 _content/tour/ger/context/answer1.go | 2 +-
 _content/tour/grc/context/answer1.go | 2 +-
 _content/tour/ita/context/answer1.go | 2 +-
 _content/tour/per/context/answer1.go | 2 +-
 _content/tour/pol/context/answer1.go | 2 +-
 _content/tour/por/context/answer1.go | 2 +-
 _content/tour/rus/context/answer1.go | 2 +-
 _content/tour/tur/context/answer1.go | 2 +-
 10 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/_content/tour/eng/context/answer1.go b/_content/tour/eng/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/eng/context/answer1.go
+++ b/_content/tour/eng/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/fre/context/answer1.go b/_content/tour/fre/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/fre/context/answer1.go
+++ b/_content/tour/fre/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ger/context/answer1.go b/_content/tour/ger/context/answer1.go
index 8291bcf3..b6febd74 100644
--- a/_content/tour/ger/context/answer1.go
+++ b/_content/tour/ger/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun 
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/grc/context/answer1.go b/_content/tour/grc/context/answer1.go
index aa4f11c5..a2dd4147 100644
--- a/_content/tour/grc/context/answer1.go
+++ b/_content/tour/grc/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // Όλα τα υλικά είναι αδειοδοτημένα υπό την Άδεια Apache Έκδοση 2.0, Ιανουάριος 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ita/context/answer1.go b/_content/tour/ita/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/ita/context/answer1.go
+++ b/_content/tour/ita/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/per/context/answer1.go b/_content/tour/per/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/per/context/answer1.go
+++ b/_content/tour/per/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/pol/context/answer1.go b/_content/tour/pol/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/pol/context/answer1.go
+++ b/_content/tour/pol/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/por/context/answer1.go b/_content/tour/por/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/por/context/answer1.go
+++ b/_content/tour/por/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/rus/context/answer1.go b/_content/tour/rus/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/rus/context/answer1.go
+++ b/_content/tour/rus/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/tur/context/answer1.go b/_content/tour/tur/context/answer1.go
index 8291bcf3..49fca71b 100644
--- a/_content/tour/tur/context/answer1.go
+++ b/_content/tour/tur/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0

From d1b936c4ecb258cf25796880b294fcf4f2e46933 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Tue, 25 Jun 2024 17:09:50 +0300
Subject: [PATCH 11/13] Do not run context/example5.go

---
 _content/tour/eng/context/example5.go | 2 +-
 _content/tour/fre/context/example5.go | 2 +-
 _content/tour/ger/context/example5.go | 2 +-
 _content/tour/grc/context/example5.go | 2 +-
 _content/tour/ita/context/example5.go | 2 +-
 _content/tour/per/context/example5.go | 2 +-
 _content/tour/pol/context/example5.go | 2 +-
 _content/tour/por/context/example5.go | 2 +-
 _content/tour/rus/context/example5.go | 2 +-
 _content/tour/tur/context/example5.go | 2 +-
 10 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/_content/tour/eng/context/example5.go b/_content/tour/eng/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/eng/context/example5.go
+++ b/_content/tour/eng/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/fre/context/example5.go b/_content/tour/fre/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/fre/context/example5.go
+++ b/_content/tour/fre/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ger/context/example5.go b/_content/tour/ger/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/ger/context/example5.go
+++ b/_content/tour/ger/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/grc/context/example5.go b/_content/tour/grc/context/example5.go
index fce0c6ed..1cbcdb05 100644
--- a/_content/tour/grc/context/example5.go
+++ b/_content/tour/grc/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // Όλα τα υλικά είναι αδειοδοτημένα υπό την Άδεια Apache Έκδοση 2.0, Ιανουάριος 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ita/context/example5.go b/_content/tour/ita/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/ita/context/example5.go
+++ b/_content/tour/ita/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/per/context/example5.go b/_content/tour/per/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/per/context/example5.go
+++ b/_content/tour/per/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/pol/context/example5.go b/_content/tour/pol/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/pol/context/example5.go
+++ b/_content/tour/pol/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/por/context/example5.go b/_content/tour/por/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/por/context/example5.go
+++ b/_content/tour/por/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/rus/context/example5.go b/_content/tour/rus/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/rus/context/example5.go
+++ b/_content/tour/rus/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/tur/context/example5.go b/_content/tour/tur/context/example5.go
index cf819766..a04854fa 100644
--- a/_content/tour/tur/context/example5.go
+++ b/_content/tour/tur/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT
+//go:build OMIT || norun
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0

From 2be6adc25ead983636cb35faf1a0aa43f3922131 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Tue, 25 Jun 2024 17:10:05 +0300
Subject: [PATCH 12/13] Run only eng tests

---
 content_test.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/content_test.go b/content_test.go
index 719c6dae..a1819a2c 100644
--- a/content_test.go
+++ b/content_test.go
@@ -19,16 +19,16 @@ import (
 // and execute (without checking for output correctness).
 // Files that contain the build constraint "nobuild" are not built.
 // Files that contain the build constraint "norun" are not executed.
-func TestContentTour(t *testing.T) {
+func TestContentEngTour(t *testing.T) {
 	if _, err := exec.LookPath("go"); err != nil {
 		t.Skipf("skipping because 'go' executable not available: %v", err)
 	}
 
-	err := filepath.Walk(filepath.Join("_content", "tour"), func(path string, fi os.FileInfo, err error) error {
-		if filepath.Ext(path) != ".go" {
-			return nil
+	err := filepath.Walk(filepath.Join("_content", "tour", "eng"), func(path string, fi os.FileInfo, err error) error {
+		if err != nil {
+			return err
 		}
-		if filepath.Base(path) == "content_test.go" {
+		if filepath.Ext(path) != ".go" {
 			return nil
 		}
 		t.Run(path, func(t *testing.T) {

From 2946c4e2df33d7acf1b3c498c6499c8fbad51598 Mon Sep 17 00:00:00 2001
From: Oleksandr Redko <oleksandr.red+github@gmail.com>
Date: Wed, 26 Jun 2024 17:30:43 +0300
Subject: [PATCH 13/13] Revert localization changes

---
 _content/tour/fre/channels/example10.go |  2 +-
 _content/tour/fre/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/fre/context/answer1.go    |  2 +-
 _content/tour/fre/context/example5.go   |  2 +-
 _content/tour/ger/channels/example10.go |  2 +-
 _content/tour/ger/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/ger/context/answer1.go    |  2 +-
 _content/tour/ger/context/example5.go   |  2 +-
 _content/tour/grc/channels/example10.go |  2 +-
 _content/tour/grc/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/grc/context/answer1.go    |  2 +-
 _content/tour/grc/context/example5.go   |  2 +-
 _content/tour/ita/channels/example10.go |  2 +-
 _content/tour/ita/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/ita/context/answer1.go    |  2 +-
 _content/tour/ita/context/example5.go   |  2 +-
 _content/tour/per/channels/example10.go |  2 +-
 _content/tour/per/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/per/context/answer1.go    |  2 +-
 _content/tour/per/context/example5.go   |  2 +-
 _content/tour/pol/channels/example10.go |  2 +-
 _content/tour/pol/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/pol/context/answer1.go    |  2 +-
 _content/tour/pol/context/example5.go   |  2 +-
 _content/tour/por/channels/example10.go |  2 +-
 _content/tour/por/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/por/context/answer1.go    |  2 +-
 _content/tour/por/context/example5.go   |  2 +-
 _content/tour/rus/channels/example10.go |  2 +-
 _content/tour/rus/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/rus/context/answer1.go    |  2 +-
 _content/tour/rus/context/example5.go   |  2 +-
 _content/tour/tur/channels/example10.go |  2 +-
 _content/tour/tur/content_test.go       | 89 +++++++++++++++++++++++++
 _content/tour/tur/context/answer1.go    |  2 +-
 _content/tour/tur/context/example5.go   |  2 +-
 36 files changed, 828 insertions(+), 27 deletions(-)
 create mode 100644 _content/tour/fre/content_test.go
 create mode 100644 _content/tour/ger/content_test.go
 create mode 100644 _content/tour/grc/content_test.go
 create mode 100644 _content/tour/ita/content_test.go
 create mode 100644 _content/tour/per/content_test.go
 create mode 100644 _content/tour/pol/content_test.go
 create mode 100644 _content/tour/por/content_test.go
 create mode 100644 _content/tour/rus/content_test.go
 create mode 100644 _content/tour/tur/content_test.go

diff --git a/_content/tour/fre/channels/example10.go b/_content/tour/fre/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/fre/channels/example10.go
+++ b/_content/tour/fre/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/fre/content_test.go b/_content/tour/fre/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/fre/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/fre/context/answer1.go b/_content/tour/fre/context/answer1.go
index 49fca71b..8291bcf3 100644
--- a/_content/tour/fre/context/answer1.go
+++ b/_content/tour/fre/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/fre/context/example5.go b/_content/tour/fre/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/fre/context/example5.go
+++ b/_content/tour/fre/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ger/channels/example10.go b/_content/tour/ger/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/ger/channels/example10.go
+++ b/_content/tour/ger/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ger/content_test.go b/_content/tour/ger/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/ger/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/ger/context/answer1.go b/_content/tour/ger/context/answer1.go
index b6febd74..8291bcf3 100644
--- a/_content/tour/ger/context/answer1.go
+++ b/_content/tour/ger/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun 
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ger/context/example5.go b/_content/tour/ger/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/ger/context/example5.go
+++ b/_content/tour/ger/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/grc/channels/example10.go b/_content/tour/grc/channels/example10.go
index e7c6e22d..9155ba82 100644
--- a/_content/tour/grc/channels/example10.go
+++ b/_content/tour/grc/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // Όλα τα υλικά είναι αδειοδοτημένα υπό την Άδεια Apache Έκδοση 2.0, Ιανουάριος 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/grc/content_test.go b/_content/tour/grc/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/grc/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/grc/context/answer1.go b/_content/tour/grc/context/answer1.go
index a2dd4147..aa4f11c5 100644
--- a/_content/tour/grc/context/answer1.go
+++ b/_content/tour/grc/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // Όλα τα υλικά είναι αδειοδοτημένα υπό την Άδεια Apache Έκδοση 2.0, Ιανουάριος 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/grc/context/example5.go b/_content/tour/grc/context/example5.go
index 1cbcdb05..fce0c6ed 100644
--- a/_content/tour/grc/context/example5.go
+++ b/_content/tour/grc/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // Όλα τα υλικά είναι αδειοδοτημένα υπό την Άδεια Apache Έκδοση 2.0, Ιανουάριος 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ita/channels/example10.go b/_content/tour/ita/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/ita/channels/example10.go
+++ b/_content/tour/ita/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ita/content_test.go b/_content/tour/ita/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/ita/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/ita/context/answer1.go b/_content/tour/ita/context/answer1.go
index 49fca71b..8291bcf3 100644
--- a/_content/tour/ita/context/answer1.go
+++ b/_content/tour/ita/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/ita/context/example5.go b/_content/tour/ita/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/ita/context/example5.go
+++ b/_content/tour/ita/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/per/channels/example10.go b/_content/tour/per/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/per/channels/example10.go
+++ b/_content/tour/per/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/per/content_test.go b/_content/tour/per/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/per/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/per/context/answer1.go b/_content/tour/per/context/answer1.go
index 49fca71b..8291bcf3 100644
--- a/_content/tour/per/context/answer1.go
+++ b/_content/tour/per/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/per/context/example5.go b/_content/tour/per/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/per/context/example5.go
+++ b/_content/tour/per/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/pol/channels/example10.go b/_content/tour/pol/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/pol/channels/example10.go
+++ b/_content/tour/pol/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/pol/content_test.go b/_content/tour/pol/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/pol/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/pol/context/answer1.go b/_content/tour/pol/context/answer1.go
index 49fca71b..8291bcf3 100644
--- a/_content/tour/pol/context/answer1.go
+++ b/_content/tour/pol/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/pol/context/example5.go b/_content/tour/pol/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/pol/context/example5.go
+++ b/_content/tour/pol/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/por/channels/example10.go b/_content/tour/por/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/por/channels/example10.go
+++ b/_content/tour/por/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/por/content_test.go b/_content/tour/por/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/por/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/por/context/answer1.go b/_content/tour/por/context/answer1.go
index 49fca71b..8291bcf3 100644
--- a/_content/tour/por/context/answer1.go
+++ b/_content/tour/por/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/por/context/example5.go b/_content/tour/por/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/por/context/example5.go
+++ b/_content/tour/por/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/rus/channels/example10.go b/_content/tour/rus/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/rus/channels/example10.go
+++ b/_content/tour/rus/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/rus/content_test.go b/_content/tour/rus/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/rus/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/rus/context/answer1.go b/_content/tour/rus/context/answer1.go
index 49fca71b..8291bcf3 100644
--- a/_content/tour/rus/context/answer1.go
+++ b/_content/tour/rus/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/rus/context/example5.go b/_content/tour/rus/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/rus/context/example5.go
+++ b/_content/tour/rus/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/tur/channels/example10.go b/_content/tour/tur/channels/example10.go
index ed01faa0..e680c74a 100644
--- a/_content/tour/tur/channels/example10.go
+++ b/_content/tour/tur/channels/example10.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/tur/content_test.go b/_content/tour/tur/content_test.go
new file mode 100644
index 00000000..6c7b22d4
--- /dev/null
+++ b/_content/tour/tur/content_test.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package content
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	// Keep github.com/ardanlabs/gotour/external/tour/wc in our go.mod require list for use during test.
+	_ "github.com/ardanlabs/gotour/external/tour/wc"
+)
+
+// Test that all the .go files inside the content file build
+// and execute (without checking for output correctness).
+// Files that contain the string "// +build no-build" are not built.
+// Files that contain the string "// +build no-run" are not executed.
+func TestContent(t *testing.T) {
+	if _, err := exec.LookPath("go"); err != nil {
+		t.Skipf("skipping because 'go' executable not available: %v", err)
+	}
+
+	scratch, err := ioutil.TempDir("", "tour-content-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(scratch)
+
+	err = filepath.Walk(".", func(path string, fi os.FileInfo, err error) error {
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		if filepath.Base(path) == "content_test.go" {
+			return nil
+		}
+		t.Run(path, func(t *testing.T) {
+			t.Parallel()
+			if err := testSnippet(t, filepath.ToSlash(path), scratch); err != nil {
+				t.Errorf("%v: %v", path, err)
+			}
+		})
+		return nil
+	})
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func testSnippet(t *testing.T, path, scratch string) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	build := string(bytes.SplitN(b, []byte{'\n'}, 2)[0])
+	if !strings.HasPrefix(build, "// +build ") {
+		return errors.New("first line is not a +build comment")
+	}
+	if !strings.Contains(build, "OMIT") {
+		return errors.New(`+build comment does not contain "OMIT"`)
+	}
+
+	if strings.Contains(build, "no-build") {
+		return nil
+	}
+	bin := filepath.Join(scratch, filepath.Base(path)+".exe")
+	out, err := exec.Command("go", "build", "-o", bin, path).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("build error: %v\noutput:\n%s", err, out)
+	}
+	defer os.Remove(bin)
+
+	if strings.Contains(build, "no-run") {
+		return nil
+	}
+	out, err = exec.Command(bin).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%v\nOutput:\n%s", err, out)
+	}
+	return nil
+}
diff --git a/_content/tour/tur/context/answer1.go b/_content/tour/tur/context/answer1.go
index 49fca71b..8291bcf3 100644
--- a/_content/tour/tur/context/answer1.go
+++ b/_content/tour/tur/context/answer1.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0
diff --git a/_content/tour/tur/context/example5.go b/_content/tour/tur/context/example5.go
index a04854fa..cf819766 100644
--- a/_content/tour/tur/context/example5.go
+++ b/_content/tour/tur/context/example5.go
@@ -1,4 +1,4 @@
-//go:build OMIT || norun
+//go:build OMIT
 
 // All material is licensed under the Apache License Version 2.0, January 2004
 // http://www.apache.org/licenses/LICENSE-2.0