feat: use helmBin() for kustomize build for helmChart in kustomization.yaml

.gitignore

@@ -1,2 +1,5 @@
 *~
 .idea
+
+# testdata
+testdata/kustomize_with_helm_charts/charts/

chartify.go

@@ -251,14 +251,15 @@ func (r *Runner) Chartify(release, dirOrChart string, opts ...ChartifyOption) (s
 	generatedManifestsUnderTemplatesDir := []string{}
 
 	if isKustomization {
-		kustomOpts := &KustomizeBuildOpts{
+		kustomizeOpts := &KustomizeBuildOpts{
 			ValuesFiles:        u.ValuesFiles,
 			SetValues:          u.SetValues,
 			SetFlags:           u.SetFlags,
 			EnableAlphaPlugins: u.EnableKustomizeAlphaPlugins,
 			Namespace:          u.Namespace,
+			HelmBinary:         r.helmBin(),
 		}
-		kustomizeFile, err := r.KustomizeBuild(dirOrChart, tempDir, kustomOpts)
+		kustomizeFile, err := r.KustomizeBuild(dirOrChart, tempDir, kustomizeOpts)
 		if err != nil {
 			return "", err
 		}

chartify_test.go

@@ -1,7 +1,9 @@
 package chartify
 
 import (
+	"context"
 	"os"
+	"os/exec"
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
@@ -111,3 +113,56 @@ func TestReadAdhocDependencies(t *testing.T) {
 		},
 	})
 }
+
+func TestUseHelmChartsInKustomize(t *testing.T) {
+	repo := "myrepo"
+	startServer(t, repo)
+
+	r := New(UseHelm3(true), HelmBin(helm))
+
+	tests := []struct {
+		name string
+		opts ChartifyOpts
+	}{
+		{
+			name: "--enable_alpha_plugins is ON",
+			opts: ChartifyOpts{
+				EnableKustomizeAlphaPlugins: true,
+			},
+		},
+		{
+			name: "--enable_alpha_plugins is OFF",
+			opts: ChartifyOpts{
+				EnableKustomizeAlphaPlugins: false,
+			},
+		},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Helper()
+
+			release := "myapp"
+			tmpDir, err := r.Chartify(release, "./testdata/kustomize_with_helm_charts", &tc.opts)
+			t.Cleanup(func() {
+				if err := os.RemoveAll(tmpDir); err != nil {
+					panic("unable to remove chartify tmpDir: " + err.Error())
+				}
+			})
+			require.NoError(t, err)
+
+			ctx := context.Background()
+			args := []string{"template", release, tmpDir}
+			cmd := exec.CommandContext(ctx, helm, args...)
+			out, err := cmd.CombinedOutput()
+			require.NoError(t, err)
+			got := string(out)
+
+			snapshotFile := "./testdata/integration/testcases/kustomize_with_helm_charts/want"
+			snapshot, err := os.ReadFile(snapshotFile)
+			require.NoError(t, err, "reading snapshot %s", snapshotFile)
+
+			want := string(snapshot)
+			require.Equal(t, want, got)
+		})
+	}
+}

kustomize.go

@@ -44,6 +44,7 @@ type KustomizeBuildOpts struct {
 	SetFlags           []string
 	EnableAlphaPlugins bool
 	Namespace          string
+	HelmBinary         string
 }
 
 func (o *KustomizeBuildOpts) SetKustomizeBuildOption(opts *KustomizeBuildOpts) error {
@@ -153,7 +154,7 @@ func (r *Runner) KustomizeBuild(srcDir string, tempDir string, opts ...Kustomize
 	if err != nil {
 		return "", err
 	}
-	kustomizeArgs = append(kustomizeArgs, f)
+	kustomizeArgs = append(kustomizeArgs, f, "--enable-helm", "--helm-command="+u.HelmBinary)
 
 	out, err := r.runInDir(tempDir, r.kustomizeBin(), append(kustomizeArgs, tempDir)...)
 	if err != nil {

testdata/integration/testcases/kustomize_with_helm_charts/want

@@ -0,0 +1,25 @@
+
+---
+# Source: kustomize_with_helm_charts/templates/kustomized.yaml
+# Source: kustomize_with_helm_charts/templates/kustomized.yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  annotations:
+    helm.sh/hook: test
+  labels:
+    app.kubernetes.io/instance: release-name
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/name: log
+    app.kubernetes.io/version: 1.16.0
+    helm.sh/chart: log-0.1.0
+  name: release-name-log-test-connection
+spec:
+  containers:
+  - args:
+    - release-name-log:80
+    command:
+    - wget
+    image: busybox
+    name: wget
+  restartPolicy: Never

testdata/kustomize_with_helm_charts/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+helmCharts:
+  - repo: http://localhost:18080/
+    name: log
+    version: 0.1.0