Report all empty resources present in error diagnostic (#1685)

## Changes
This PR addressed post-merge feedback from
#1673.

## Tests
Unit tests, and manually.
```
Error: experiment undefined-experiment is not defined
  at resources.experiments.undefined-experiment
  in databricks.yml:11:26

Error: job undefined-job is not defined
  at resources.jobs.undefined-job
  in databricks.yml:6:19

Error: pipeline undefined-pipeline is not defined
  at resources.pipelines.undefined-pipeline
  in databricks.yml:14:24

Name: undefined-job
Target: default

Found 3 errors
```

bundle/config/validate/all_resources_have_values.go

@@ -3,6 +3,7 @@ package validate
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strings"
 
 	"github.com/databricks/cli/bundle"
@@ -21,27 +22,36 @@ func (m *allResourcesHaveValues) Name() string {
 }
 
 func (m *allResourcesHaveValues) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagnostics {
-	rv := b.Config.Value().Get("resources")
-
-	// Skip if there are no resources block defined, or the resources block is empty.
-	if rv.Kind() == dyn.KindInvalid || rv.Kind() == dyn.KindNil {
-		return nil
-	}
+	diags := diag.Diagnostics{}
 
 	_, err := dyn.MapByPattern(
-		rv,
-		dyn.NewPattern(dyn.AnyKey(), dyn.AnyKey()),
+		b.Config.Value(),
+		dyn.NewPattern(dyn.Key("resources"), dyn.AnyKey(), dyn.AnyKey()),
 		func(p dyn.Path, v dyn.Value) (dyn.Value, error) {
-			if v.Kind() == dyn.KindInvalid || v.Kind() == dyn.KindNil {
-				// Type of the resource, stripped of the trailing 's' to make it
-				// singular.
-				rType := strings.TrimSuffix(p[0].Key(), "s")
-
-				rName := p[1].Key()
-				return v, fmt.Errorf("%s %s is not defined", rType, rName)
+			if v.Kind() != dyn.KindNil {
+				return v, nil
 			}
+
+			// Type of the resource, stripped of the trailing 's' to make it
+			// singular.
+			rType := strings.TrimSuffix(p[1].Key(), "s")
+
+			// Name of the resource. Eg: "foo" in "jobs.foo".
+			rName := p[2].Key()
+
+			diags = append(diags, diag.Diagnostic{
+				Severity:  diag.Error,
+				Summary:   fmt.Sprintf("%s %s is not defined", rType, rName),
+				Locations: v.Locations(),
+				Paths:     []dyn.Path{slices.Clone(p)},
+			})
+
 			return v, nil
 		},
 	)
-	return diag.FromErr(err)
+	if err != nil {
+		diags = append(diags, diag.FromErr(err)...)
+	}
+
+	return diags
 }

bundle/tests/environments_job_and_pipeline_test.go

@@ -1,7 +1,6 @@
 package config_tests
 
 import (
-	"path/filepath"
 	"testing"
 
 	"github.com/databricks/cli/bundle/config"
@@ -15,8 +14,6 @@ func TestJobAndPipelineDevelopmentWithEnvironment(t *testing.T) {
 	assert.Len(t, b.Config.Resources.Pipelines, 1)
 
 	p := b.Config.Resources.Pipelines["nyc_taxi_pipeline"]
-	l := b.Config.GetLocation("resources.pipelines.nyc_taxi_pipeline")
-	assert.Equal(t, "environments_job_and_pipeline/databricks.yml", filepath.ToSlash(l.File))
 	assert.Equal(t, b.Config.Bundle.Mode, config.Development)
 	assert.True(t, p.Development)
 	require.Len(t, p.Libraries, 1)
@@ -30,8 +27,6 @@ func TestJobAndPipelineStagingWithEnvironment(t *testing.T) {
 	assert.Len(t, b.Config.Resources.Pipelines, 1)
 
 	p := b.Config.Resources.Pipelines["nyc_taxi_pipeline"]
-	l := b.Config.GetLocation("resources.pipelines.nyc_taxi_pipeline")
-	assert.Equal(t, "environments_job_and_pipeline/databricks.yml", filepath.ToSlash(l.File))
 	assert.False(t, p.Development)
 	require.Len(t, p.Libraries, 1)
 	assert.Equal(t, "./dlt/nyc_taxi_loader", p.Libraries[0].Notebook.Path)
@@ -44,16 +39,12 @@ func TestJobAndPipelineProductionWithEnvironment(t *testing.T) {
 	assert.Len(t, b.Config.Resources.Pipelines, 1)
 
 	p := b.Config.Resources.Pipelines["nyc_taxi_pipeline"]
-	pl := b.Config.GetLocation("resources.pipelines.nyc_taxi_pipeline")
-	assert.Equal(t, "environments_job_and_pipeline/databricks.yml", filepath.ToSlash(pl.File))
 	assert.False(t, p.Development)
 	require.Len(t, p.Libraries, 1)
 	assert.Equal(t, "./dlt/nyc_taxi_loader", p.Libraries[0].Notebook.Path)
 	assert.Equal(t, "nyc_taxi_production", p.Target)
 
 	j := b.Config.Resources.Jobs["pipeline_schedule"]
-	jl := b.Config.GetLocation("resources.jobs.pipeline_schedule")
-	assert.Equal(t, "environments_job_and_pipeline/databricks.yml", filepath.ToSlash(jl.File))
 	assert.Equal(t, "Daily refresh of production pipeline", j.Name)
 	require.Len(t, j.Tasks, 1)
 	assert.NotEmpty(t, j.Tasks[0].PipelineTask.PipelineId)

bundle/tests/undefined_resources/databricks.yml

@@ -0,0 +1,14 @@
+bundle:
+  name: undefined-job
+
+resources:
+  jobs:
+    undefined-job:
+    test:
+      name: "Test Job"
+
+  experiments:
+    undefined-experiment:
+
+  pipelines:
+    undefined-pipeline:

bundle/tests/undefined_resources_test.go

@@ -0,0 +1,50 @@
+package config_tests
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+
+	"github.com/databricks/cli/bundle"
+	"github.com/databricks/cli/bundle/config/validate"
+	"github.com/databricks/cli/libs/diag"
+	"github.com/databricks/cli/libs/dyn"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUndefinedResourcesLoadWithError(t *testing.T) {
+	b := load(t, "./undefined_resources")
+	diags := bundle.Apply(context.Background(), b, validate.AllResourcesHaveValues())
+
+	assert.Len(t, diags, 3)
+	assert.Contains(t, diags, diag.Diagnostic{
+		Severity: diag.Error,
+		Summary:  "job undefined-job is not defined",
+		Locations: []dyn.Location{{
+			File:   filepath.FromSlash("undefined_resources/databricks.yml"),
+			Line:   6,
+			Column: 19,
+		}},
+		Paths: []dyn.Path{dyn.MustPathFromString("resources.jobs.undefined-job")},
+	})
+	assert.Contains(t, diags, diag.Diagnostic{
+		Severity: diag.Error,
+		Summary:  "experiment undefined-experiment is not defined",
+		Locations: []dyn.Location{{
+			File:   filepath.FromSlash("undefined_resources/databricks.yml"),
+			Line:   11,
+			Column: 26,
+		}},
+		Paths: []dyn.Path{dyn.MustPathFromString("resources.experiments.undefined-experiment")},
+	})
+	assert.Contains(t, diags, diag.Diagnostic{
+		Severity: diag.Error,
+		Summary:  "pipeline undefined-pipeline is not defined",
+		Locations: []dyn.Location{{
+			File:   filepath.FromSlash("undefined_resources/databricks.yml"),
+			Line:   14,
+			Column: 24,
+		}},
+		Paths: []dyn.Path{dyn.MustPathFromString("resources.pipelines.undefined-pipeline")},
+	})
+}