Add builtin namespace transformer plugin

plugin/builtin/namespacetransformer/NamespaceTransformer_test.go

@@ -0,0 +1,176 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package main_test
+
+import (
+	"testing"
+
+	"sigs.k8s.io/kustomize/pkg/kusttest"
+	"sigs.k8s.io/kustomize/plugin"
+)
+
+func TestNamespaceTransformer1(t *testing.T) {
+	tc := plugin.NewEnvForTest(t).Set()
+	defer tc.Reset()
+
+	tc.BuildGoPlugin(
+		"builtin", "", "NamespaceTransformer")
+
+	th := kusttest_test.NewKustTestPluginHarness(t, "/app")
+
+	rm := th.LoadAndRunTransformer(`
+apiVersion: builtin
+kind: NamespaceTransformer
+metadata:
+  name: notImportantHere
+namespace: test
+fieldSpecs:
+- path: metadata/namespace
+  create: true
+`, `
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: cm1
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: cm2
+  namespace: foo
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: ns1
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: default
+  namespace: system
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: service-account
+  namespace: system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: manager-rolebinding
+subjects:
+- kind: ServiceAccount
+  name: default
+  namespace: system
+- kind: ServiceAccount
+  name: service-account
+  namespace: system
+- kind: ServiceAccount
+  name: another
+  namespace: random
+---
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: crd
+`)
+
+	th.AssertActualEqualsExpected(rm, `
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: ns1
+---
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: crd
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: default
+  namespace: test
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: service-account
+  namespace: test
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: manager-rolebinding
+subjects:
+- kind: ServiceAccount
+  name: default
+  namespace: test
+- kind: ServiceAccount
+  name: service-account
+  namespace: test
+- kind: ServiceAccount
+  name: another
+  namespace: random
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: cm1
+  namespace: test
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: cm2
+  namespace: test
+`)
+}
+
+func TestNamespaceTransformerClusterLevelKinds(t *testing.T) {
+	tc := plugin.NewEnvForTest(t).Set()
+	defer tc.Reset()
+
+	tc.BuildGoPlugin(
+		"builtin", "", "NamespaceTransformer")
+
+	th := kusttest_test.NewKustTestPluginHarness(t, "/app")
+
+	const noChangeExpected = `
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: ns1
+---
+kind: CustomResourceDefinition
+metadata:
+  name: crd1
+---
+kind: ClusterRole
+metadata:
+  name: cr1
+---
+kind: ClusterRoleBinding
+metadata:
+  name: crb1
+---
+kind: PersistentVolume
+metadata:
+  name: pv1
+`
+	rm := th.LoadAndRunTransformer(`
+apiVersion: builtin
+kind: NamespaceTransformer
+metadata:
+  name: notImportantHere
+namespace: test
+fieldSpecs:
+- path: metadata/namespace
+  create: true
+`, noChangeExpected)
+
+	th.AssertActualEqualsExpected(rm, noChangeExpected)
+}