Move some pkg/kubectl into polymorphichelpers

pkg/kubectl/polymorphichelpers/rollback_test.go

@@ -0,0 +1,67 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package polymorphichelpers
+
+import (
+	"reflect"
+	"testing"
+
+	corev1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/kubernetes/fake"
+)
+
+var rollbacktests = map[schema.GroupKind]reflect.Type{
+	{Group: "apps", Kind: "DaemonSet"}:   reflect.TypeOf(&DaemonSetRollbacker{}),
+	{Group: "apps", Kind: "StatefulSet"}: reflect.TypeOf(&StatefulSetRollbacker{}),
+	{Group: "apps", Kind: "Deployment"}:  reflect.TypeOf(&DeploymentRollbacker{}),
+}
+
+func TestRollbackerFor(t *testing.T) {
+	fakeClientset := &fake.Clientset{}
+
+	for kind, expectedType := range rollbacktests {
+		result, err := RollbackerFor(kind, fakeClientset)
+		if err != nil {
+			t.Fatalf("error getting Rollbacker for a %v: %v", kind.String(), err)
+		}
+
+		if reflect.TypeOf(result) != expectedType {
+			t.Fatalf("unexpected output type (%v was expected but got %v)", expectedType, reflect.TypeOf(result))
+		}
+	}
+}
+
+func TestGetDeploymentPatch(t *testing.T) {
+	patchType, patchBytes, err := getDeploymentPatch(&corev1.PodTemplateSpec{
+		Spec: corev1.PodSpec{
+			Containers: []corev1.Container{{Image: "foo"}}}}, map[string]string{"a": "true"})
+	if err != nil {
+		t.Error(err)
+	}
+	if patchType != types.JSONPatchType {
+		t.Errorf("expected strategic merge patch, got %v", patchType)
+	}
+	expectedPatch := `[` +
+		`{"op":"replace","path":"/spec/template","value":{"metadata":{"creationTimestamp":null},"spec":{"containers":[{"name":"","image":"foo","resources":{}}]}}},` +
+		`{"op":"replace","path":"/metadata/annotations","value":{"a":"true"}}` +
+		`]`
+	if string(patchBytes) != expectedPatch {
+		t.Errorf("expected:\n%s\ngot\n%s", expectedPatch, string(patchBytes))
+	}
+}