fix: add unit test for TestPostRenderHookManifests and fix unit test error in internal/test/test.go and pkg/chartutil/values.go

Signed-off-by: guofutan <guofutan@tencent.com>

pkg/action/action.go

@@ -97,6 +97,19 @@ type Configuration struct {
 	Log func(string, ...interface{})
 }
 
+// postRenderReleaseHook render the manifests of release hooks with postrender.PostRenderer
+func postRenderHookManifests(hs []*release.Hook, pr postrender.PostRenderer) error {
+
+	for _, hook := range hs {
+		sb, err := pr.Run(bytes.NewBufferString(hook.Manifest))
+		if err != nil {
+			return errors.Wrapf(err, "error while running post render on hook: %s manifest", hook.Name)
+		}
+		hook.Manifest = sb.String()
+	}
+	return nil
+}
+
 // renderResources renders the templates in a chart
 //
 // TODO: This function is badly in need of a refactor.
@@ -220,12 +233,10 @@ func (cfg *Configuration) renderResources(ch *chart.Chart, values chartutil.Valu
 		if err != nil {
 			return hs, b, notes, errors.Wrap(err, "error while running post render on files")
 		}
-		for _, hook := range hs {
+
-			sb, err := pr.Run(bytes.NewBufferString(hook.Manifest))
+		err = postRenderHookManifests(hs, pr)
-			if err != nil {
+		if err != nil {
-				return hs, b, notes, errors.Wrap(err, "error while running post render on hooks manifest")
+			return hs, b, notes, err
-			}
-			hook.Manifest = sb.String()
 		}
 	}
 

pkg/action/action_test.go

@@ -18,13 +18,16 @@ package action
 import (
 	"flag"
 	"io/ioutil"
+	"runtime"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	fakeclientset "k8s.io/client-go/kubernetes/fake"
 
 	"helm.sh/helm/v3/pkg/chart"
 	"helm.sh/helm/v3/pkg/chartutil"
 	kubefake "helm.sh/helm/v3/pkg/kube/fake"
+	"helm.sh/helm/v3/pkg/postrender"
 	"helm.sh/helm/v3/pkg/registry"
 	"helm.sh/helm/v3/pkg/release"
 	"helm.sh/helm/v3/pkg/storage"
@@ -281,3 +284,37 @@ func TestGetVersionSet(t *testing.T) {
 		t.Error("Non-existent version is reported found.")
 	}
 }
+
+func TestPostRenderHookManifests(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		// the actual Run test uses a basic sed example, so skip this test on windows
+		t.Skip("skipping on windows")
+	}
+
+	hs := []*release.Hook{
+		{
+			Name:     "finding-nemo",
+			Kind:     "Pod",
+			Path:     "finding-nemo",
+			Manifest: manifestWithTestHook,
+			Events: []release.HookEvent{
+				release.HookTest,
+			},
+		},
+	}
+
+	pr, err := postrender.NewExec("sed", "s/fake-image/local-image/")
+	if err != nil {
+		t.Error(err)
+	}
+
+	if err := postRenderHookManifests(hs, pr); err != nil {
+		t.Error(err)
+	}
+
+	is := assert.New(t)
+	for _, hook := range hs {
+		is.Contains(hook.Manifest, "local-image")
+	}
+
+}