Add test with mismatching requirements.lock

.gitignore

@@ -5,3 +5,4 @@ example/**/charts
 example/**/.cache
 example/*/requirements.lock
 !example/cert-manager/requirements.lock
+!example/invalid-requirements-lock/requirements.lock

example/invalid-requirements-lock/Chart.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+description: example chart with mismatching requirements.lock
+name: invalid-requirements-example
+version: 0.1.0

example/invalid-requirements-lock/chartref.yaml

@@ -0,0 +1,6 @@
+apiVersion: helm.kustomize.mgoltzsche.github.com/v1
+kind: ChartRenderer
+metadata:
+  name: invalid-requirements-example
+  namespace: invalid-requirements-example-env
+chart: .

example/invalid-requirements-lock/kustomization.yaml

@@ -0,0 +1,2 @@
+generators:
+- chartref.yaml

example/invalid-requirements-lock/requirements.lock

@@ -0,0 +1,6 @@
+dependencies:
+- name: cert-manager
+  repository: https://charts.jetstack.io
+  version: v1.0.2
+digest: sha256:a670f879168301db10f65ec15197ac7b29dc72486180ff68c3d5aec3fe53109b
+generated: "2020-09-30T21:15:11.689897724Z"

example/invalid-requirements-lock/requirements.yaml

@@ -0,0 +1,4 @@
+dependencies:
+- name: cert-manager
+  version: 1.0.2
+  repository: https://charts.jetstack.io

pkg/helm/helm_test.go

@@ -60,12 +60,23 @@ func TestRender(t *testing.T) {
 	}
 }
 
-func TestRenderReject(t *testing.T) {
+func TestRenderRejectFileOutsideProjectDir(t *testing.T) {
 	file := filepath.Join(currDir, "chartwithextvalues.yaml")
 	err := render(t, file, currDir, &bytes.Buffer{})
 	require.Error(t, err, "render %s within %s", file, currDir)
 }
 
+func TestRenderError(t *testing.T) {
+	for _, file := range []string{
+		"../../example/invalid-requirements-lock/chartref.yaml",
+	} {
+		file = filepath.Join(currDir, file)
+		rootDir := filepath.Join(currDir, "..", "..")
+		err := render(t, file, rootDir, &bytes.Buffer{})
+		require.Error(t, err, "render %s", file)
+	}
+}
+
 func render(t *testing.T, file, rootDir string, writer io.Writer) (err error) {
 	log.SetFlags(0)
 	f, err := os.Open(file)