k3s/pkg/kubectl/cmd/resource/get_test.go

/*
Copyright 2014 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 resource

import (
	"bytes"
	encjson "encoding/json"
	"fmt"
	"io"
	"io/ioutil"
	"net/http"
	"path/filepath"
	"reflect"
	"strings"
	"testing"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apimachinery/pkg/runtime/serializer/json"
	"k8s.io/apimachinery/pkg/runtime/serializer/streaming"
	"k8s.io/apimachinery/pkg/util/diff"
	"k8s.io/apimachinery/pkg/watch"
	"k8s.io/client-go/dynamic"
	restclient "k8s.io/client-go/rest"
	"k8s.io/client-go/rest/fake"
	restclientwatch "k8s.io/client-go/rest/watch"
	"k8s.io/kube-openapi/pkg/util/proto"
	"k8s.io/kubernetes/pkg/api/testapi"
	apitesting "k8s.io/kubernetes/pkg/api/testing"
	api "k8s.io/kubernetes/pkg/apis/core"
	"k8s.io/kubernetes/pkg/apis/core/v1"

	"k8s.io/kubernetes/pkg/api/legacyscheme"
	cmdtesting "k8s.io/kubernetes/pkg/kubectl/cmd/testing"
	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
	"k8s.io/kubernetes/pkg/kubectl/cmd/util/openapi"
	openapitesting "k8s.io/kubernetes/pkg/kubectl/cmd/util/openapi/testing"
	"k8s.io/kubernetes/pkg/kubectl/scheme"
)

var openapiSchemaPath = filepath.Join("..", "..", "..", "..", "api", "openapi-spec", "swagger.json")

// This init should be removed after switching this command and its tests to user external types.
func init() {
	api.AddToScheme(scheme.Scheme)
	scheme.Scheme.AddConversionFuncs(v1.Convert_core_PodSpec_To_v1_PodSpec)
	scheme.Scheme.AddConversionFuncs(v1.Convert_v1_PodSecurityContext_To_core_PodSecurityContext)
}

var unstructuredSerializer = dynamic.ContentConfig().NegotiatedSerializer

func defaultHeader() http.Header {
	header := http.Header{}
	header.Set("Content-Type", runtime.ContentTypeJSON)
	return header
}

func defaultClientConfig() *restclient.Config {
	return &restclient.Config{
		APIPath: "/api",
		ContentConfig: restclient.ContentConfig{
			NegotiatedSerializer: scheme.Codecs,
			ContentType:          runtime.ContentTypeJSON,
			GroupVersion:         &scheme.Registry.GroupOrDie(api.GroupName).GroupVersion,
		},
	}
}

type testPrinter struct {
	Objects        []runtime.Object
	Err            error
	GenericPrinter bool
}

func (t *testPrinter) PrintObj(obj runtime.Object, out io.Writer) error {
	t.Objects = append(t.Objects, obj)
	fmt.Fprintf(out, "%#v", obj)
	return t.Err
}

// TODO: implement HandledResources()
func (t *testPrinter) HandledResources() []string {
	return []string{}
}

func (t *testPrinter) AfterPrint(output io.Writer, res string) error {
	return nil
}

func (t *testPrinter) IsGeneric() bool {
	return t.GenericPrinter
}

func objBody(codec runtime.Codec, obj runtime.Object) io.ReadCloser {
	return ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(codec, obj))))
}

func stringBody(body string) io.ReadCloser {
	return ioutil.NopCloser(bytes.NewReader([]byte(body)))
}

func initTestErrorHandler(t *testing.T) {
	cmdutil.BehaviorOnFatal(func(str string, code int) {
		t.Errorf("Error running command (exit code %d): %s", code, str)
	})
}

func testData() (*api.PodList, *api.ServiceList, *api.ReplicationControllerList) {
	pods := &api.PodList{
		ListMeta: metav1.ListMeta{
			ResourceVersion: "15",
		},
		Items: []api.Pod{
			{
				ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "test", ResourceVersion: "10"},
				Spec:       apitesting.DeepEqualSafePodSpec(),
			},
			{
				ObjectMeta: metav1.ObjectMeta{Name: "bar", Namespace: "test", ResourceVersion: "11"},
				Spec:       apitesting.DeepEqualSafePodSpec(),
			},
		},
	}
	svc := &api.ServiceList{
		ListMeta: metav1.ListMeta{
			ResourceVersion: "16",
		},
		Items: []api.Service{
			{
				ObjectMeta: metav1.ObjectMeta{Name: "baz", Namespace: "test", ResourceVersion: "12"},
				Spec: api.ServiceSpec{
					SessionAffinity: "None",
					Type:            api.ServiceTypeClusterIP,
				},
			},
		},
	}
	rc := &api.ReplicationControllerList{
		ListMeta: metav1.ListMeta{
			ResourceVersion: "17",
		},
		Items: []api.ReplicationController{
			{
				ObjectMeta: metav1.ObjectMeta{Name: "rc1", Namespace: "test", ResourceVersion: "18"},
				Spec: api.ReplicationControllerSpec{
					Replicas: 1,
				},
			},
		},
	}
	return pods, svc, rc
}

func testComponentStatusData() *api.ComponentStatusList {
	good := api.ComponentStatus{
		Conditions: []api.ComponentCondition{
			{Type: api.ComponentHealthy, Status: api.ConditionTrue, Message: "ok"},
		},
		ObjectMeta: metav1.ObjectMeta{Name: "servergood"},
	}

	bad := api.ComponentStatus{
		Conditions: []api.ComponentCondition{
			{Type: api.ComponentHealthy, Status: api.ConditionFalse, Message: "", Error: "bad status: 500"},
		},
		ObjectMeta: metav1.ObjectMeta{Name: "serverbad"},
	}

	unknown := api.ComponentStatus{
		Conditions: []api.ComponentCondition{
			{Type: api.ComponentHealthy, Status: api.ConditionUnknown, Message: "", Error: "fizzbuzz error"},
		},
		ObjectMeta: metav1.ObjectMeta{Name: "serverunknown"},
	}

	return &api.ComponentStatusList{
		Items: []api.ComponentStatus{good, bad, unknown},
	}
}

// Verifies that schemas that are not in the master tree of Kubernetes can be retrieved via Get.
func TestGetUnknownSchemaObject(t *testing.T) {
	t.Skip("This test is completely broken.  The first thing it does is add the object to the scheme!")
	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	_, _, codec := cmdtesting.NewExternalScheme()
	tf.OpenAPISchemaFunc = openapitesting.CreateOpenAPISchemaFunc(openapiSchemaPath)

	obj := &cmdtesting.ExternalType{
		Kind:       "Type",
		APIVersion: "apitest/unlikelyversion",
		Name:       "foo",
	}

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp: &http.Response{
			StatusCode: 200, Header: defaultHeader(),
			Body: objBody(codec, obj),
		},
	}
	tf.Namespace = "test"
	tf.ClientConfigVal = defaultClientConfig()

	mapper, _ := tf.Object()
	m, err := mapper.RESTMapping(schema.GroupKind{Group: "apitest", Kind: "Type"})
	if err != nil {
		t.Fatal(err)
	}
	convertedObj, err := m.ConvertToVersion(&unstructured.Unstructured{
		Object: map[string]interface{}{
			"kind":       "Type",
			"apiVersion": "apitest/unlikelyversion",
			"name":       "foo",
		},
	}, schema.GroupVersion{Group: "apitest", Version: "unlikelyversion"})
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(convertedObj, obj) {
		t.Fatalf("unexpected conversion of unstructured object to structured: %s", diff.ObjectReflectDiff(convertedObj, obj))
	}

	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"type", "foo"})

	expected := []runtime.Object{cmdtesting.NewInternalType("", "", "foo")}
	actual := []runtime.Object{}
	//actual := tf.Printer.(*testPrinter).Objects
	if len(actual) != len(expected) {
		t.Fatalf("expected: %#v, but actual: %#v", expected, actual)
	}
	t.Logf("actual: %#v", actual[0])
	for i, obj := range actual {
		expectedJSON := runtime.EncodeOrDie(codec, expected[i])
		expectedMap := map[string]interface{}{}
		if err := encjson.Unmarshal([]byte(expectedJSON), &expectedMap); err != nil {
			t.Fatal(err)
		}

		actualJSON := runtime.EncodeOrDie(codec, obj)
		actualMap := map[string]interface{}{}
		if err := encjson.Unmarshal([]byte(actualJSON), &actualMap); err != nil {
			t.Fatal(err)
		}

		if !reflect.DeepEqual(expectedMap, actualMap) {
			t.Errorf("expectedMap: %#v, but actualMap: %#v", expectedMap, actualMap)
		}
	}
}

// Verifies that schemas that are not in the master tree of Kubernetes can be retrieved via Get.
func TestGetSchemaObject(t *testing.T) {
	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := testapi.Default.Codec()
	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &api.ReplicationController{ObjectMeta: metav1.ObjectMeta{Name: "foo"}})},
	}
	tf.Namespace = "test"
	tf.ClientConfigVal = defaultClientConfig()
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.Run(cmd, []string{"replicationcontrollers", "foo"})

	if !strings.Contains(buf.String(), "foo") {
		t.Errorf("unexpected output: %s", buf.String())
	}
}

func TestGetObjectsWithOpenAPIOutputFormatPresent(t *testing.T) {
	pods, _, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	// overide the openAPISchema function to return custom output
	// for Pod type.
	tf.OpenAPISchemaFunc = testOpenAPISchemaData
	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods.Items[0])},
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Set(useOpenAPIPrintColumnFlagLabel, "true")
	cmd.Run(cmd, []string{"pods", "foo"})

	expected := `NAME      RSRC
foo       10
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

type FakeResources struct {
	resources map[schema.GroupVersionKind]proto.Schema
}

func (f FakeResources) LookupResource(s schema.GroupVersionKind) proto.Schema {
	return f.resources[s]
}

var _ openapi.Resources = &FakeResources{}

func testOpenAPISchemaData() (openapi.Resources, error) {
	return &FakeResources{
		resources: map[schema.GroupVersionKind]proto.Schema{
			{
				Version: "v1",
				Kind:    "Pod",
			}: &proto.Primitive{
				BaseSchema: proto.BaseSchema{
					Extensions: map[string]interface{}{
						"x-kubernetes-print-columns": "custom-columns=NAME:.metadata.name,RSRC:.metadata.resourceVersion",
					},
				},
			},
		},
	}, nil
}

func TestGetObjects(t *testing.T) {
	pods, _, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods.Items[0])},
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"pods", "foo"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetObjectsFiltered(t *testing.T) {
	initTestErrorHandler(t)

	pods, _, _ := testData()
	pods.Items[0].Status.Phase = api.PodFailed
	first := &pods.Items[0]

	testCases := []struct {
		args   []string
		resp   runtime.Object
		flags  map[string]string
		expect string
	}{
		{args: []string{"pods", "foo"}, resp: first, flags: map[string]string{"show-all": "true"},
			expect: "NAME      READY     STATUS    RESTARTS   AGE\nfoo       0/0       Failed    0          <unknown>\n"},

		{args: []string{"pods", "foo"}, flags: map[string]string{"show-all": "false"}, resp: first,
			expect: "NAME      READY     STATUS    RESTARTS   AGE\nfoo       0/0       Failed    0          <unknown>\n"},

		{args: []string{"pods"}, flags: map[string]string{"show-all": "true"}, resp: pods,
			expect: "NAME      READY     STATUS    RESTARTS   AGE\nfoo       0/0       Failed    0          <unknown>\nbar       0/0                 0          <unknown>\n"},

		{args: []string{"pods/foo"}, resp: first, flags: map[string]string{"show-all": "false"},
			expect: "NAME      READY     STATUS    RESTARTS   AGE\nfoo       0/0       Failed    0          <unknown>\n"},

		{args: []string{"pods"}, flags: map[string]string{"show-all": "false", "output": "name"}, resp: pods,
			expect: "pod/foo\npod/bar\n"},

		{args: []string{}, flags: map[string]string{"show-all": "false", "filename": "../../../../test/e2e/testing-manifests/statefulset/cassandra/controller.yaml"}, resp: pods,
			expect: "NAME      READY     STATUS    RESTARTS   AGE\nfoo       0/0       Failed    0          <unknown>\nbar       0/0                 0          <unknown>\n"},

		{args: []string{"pods"}, resp: pods, flags: map[string]string{"show-all": "false"},
			expect: "NAME      READY     STATUS    RESTARTS   AGE\nbar       0/0                 0          <unknown>\n"},

		{args: []string{"pods"}, flags: map[string]string{"show-all": "true", "output": "name"}, resp: pods,
			expect: "pod/foo\npod/bar\n"},

		{args: []string{"pods"}, flags: map[string]string{"show-all": "false"}, resp: pods,
			expect: "NAME      READY     STATUS    RESTARTS   AGE\nbar       0/0                 0          <unknown>\n"},
	}

	for i, test := range testCases {
		t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
			tf := cmdtesting.NewTestFactory()
			defer tf.Cleanup()
			defer tf.Cleanup()
			codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

			tf.UnstructuredClient = &fake.RESTClient{
				GroupVersion:         schema.GroupVersion{Version: "v1"},
				NegotiatedSerializer: unstructuredSerializer,
				Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, test.resp)},
			}
			tf.Namespace = "test"
			buf := bytes.NewBuffer([]byte{})
			errBuf := bytes.NewBuffer([]byte{})

			cmd := NewCmdGet(tf, buf, errBuf)
			cmd.SetOutput(buf)
			for k, v := range test.flags {
				cmd.Flags().Lookup(k).Value.Set(v)
			}
			cmd.Run(cmd, test.args)

			if e, a := test.expect, buf.String(); e != a {
				t.Errorf("expected %q, got %q", e, a)
			}
		})
	}
}

func TestGetObjectIgnoreNotFound(t *testing.T) {
	initTestErrorHandler(t)

	ns := &api.NamespaceList{
		ListMeta: metav1.ListMeta{
			ResourceVersion: "1",
		},
		Items: []api.Namespace{
			{
				ObjectMeta: metav1.ObjectMeta{Name: "testns", Namespace: "test", ResourceVersion: "11"},
				Spec:       api.NamespaceSpec{},
			},
		},
	}

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch p, m := req.URL.Path, req.Method; {
			case p == "/namespaces/test/pods/nonexistentpod" && m == "GET":
				return &http.Response{StatusCode: 404, Header: defaultHeader(), Body: stringBody("")}, nil
			case p == "/api/v1/namespaces/test" && m == "GET":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &ns.Items[0])}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Set("ignore-not-found", "true")
	cmd.Flags().Set("output", "yaml")
	cmd.Run(cmd, []string{"pods", "nonexistentpod"})

	if buf.String() != "" {
		t.Errorf("unexpected output: %s", buf.String())
	}
}

func TestGetSortedObjects(t *testing.T) {
	pods := &api.PodList{
		ListMeta: metav1.ListMeta{
			ResourceVersion: "15",
		},
		Items: []api.Pod{
			{
				ObjectMeta: metav1.ObjectMeta{Name: "c", Namespace: "test", ResourceVersion: "10"},
				Spec:       apitesting.DeepEqualSafePodSpec(),
			},
			{
				ObjectMeta: metav1.ObjectMeta{Name: "b", Namespace: "test", ResourceVersion: "11"},
				Spec:       apitesting.DeepEqualSafePodSpec(),
			},
			{
				ObjectMeta: metav1.ObjectMeta{Name: "a", Namespace: "test", ResourceVersion: "9"},
				Spec:       apitesting.DeepEqualSafePodSpec(),
			},
		},
	}

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)},
	}
	tf.Namespace = "test"
	tf.ClientConfigVal = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Version: "v1"}}}

	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	// sorting with metedata.name
	cmd.Flags().Set("sort-by", ".metadata.name")
	cmd.Run(cmd, []string{"pods"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
a         0/0                 0          <unknown>
b         0/0                 0          <unknown>
c         0/0                 0          <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetObjectsIdentifiedByFile(t *testing.T) {
	pods, _, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods.Items[0])},
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Set("filename", "../../../../test/e2e/testing-manifests/statefulset/cassandra/controller.yaml")
	cmd.Run(cmd, []string{})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetListObjects(t *testing.T) {
	pods, _, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)},
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"pods"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
bar       0/0                 0          <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetAllListObjects(t *testing.T) {
	pods, _, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)},
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Set("show-all", "true")
	cmd.Run(cmd, []string{"pods"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
bar       0/0                 0          <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetListComponentStatus(t *testing.T) {
	statuses := testComponentStatusData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, statuses)},
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"componentstatuses"})

	expected := `NAME            STATUS      MESSAGE   ERROR
servergood      Healthy     ok        
serverbad       Unhealthy             bad status: 500
serverunknown   Unhealthy             fizzbuzz error
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetMixedGenericObjects(t *testing.T) {
	initTestErrorHandler(t)

	// ensure that a runtime.Object without
	// an ObjectMeta field is handled properly
	structuredObj := &metav1.Status{
		TypeMeta: metav1.TypeMeta{
			Kind:       "Status",
			APIVersion: "v1",
		},
		Status:  "Success",
		Message: "",
		Reason:  "",
		Code:    0,
	}

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/namespaces/test/pods":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, structuredObj)}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	tf.ClientConfigVal = defaultClientConfig()
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Set("output", "json")
	cmd.Run(cmd, []string{"pods"})

	expected := `{
    "apiVersion": "v1",
    "items": [
        {
            "apiVersion": "v1",
            "kind": "Status",
            "metadata": {},
            "status": "Success"
        }
    ],
    "kind": "List",
    "metadata": {
        "resourceVersion": "",
        "selfLink": ""
    }
}
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetMultipleTypeObjects(t *testing.T) {
	pods, svc, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/namespaces/test/pods":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)}, nil
			case "/namespaces/test/services":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, svc)}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"pods,services"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
bar       0/0                 0          <unknown>
NAME      TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
baz       ClusterIP   <none>       <none>        <none>    <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetMultipleTypeObjectsAsList(t *testing.T) {
	pods, svc, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/namespaces/test/pods":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)}, nil
			case "/namespaces/test/services":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, svc)}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	tf.ClientConfigVal = defaultClientConfig()
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("output", "json")
	cmd.Run(cmd, []string{"pods,services"})

	expected := `{
    "apiVersion": "v1",
    "items": [
        {
            "apiVersion": "v1",
            "kind": "Pod",
            "metadata": {
                "creationTimestamp": null,
                "name": "foo",
                "namespace": "test",
                "resourceVersion": "10"
            },
            "spec": {
                "containers": null,
                "dnsPolicy": "ClusterFirst",
                "restartPolicy": "Always",
                "schedulerName": "default-scheduler",
                "securityContext": {},
                "terminationGracePeriodSeconds": 30
            },
            "status": {}
        },
        {
            "apiVersion": "v1",
            "kind": "Pod",
            "metadata": {
                "creationTimestamp": null,
                "name": "bar",
                "namespace": "test",
                "resourceVersion": "11"
            },
            "spec": {
                "containers": null,
                "dnsPolicy": "ClusterFirst",
                "restartPolicy": "Always",
                "schedulerName": "default-scheduler",
                "securityContext": {},
                "terminationGracePeriodSeconds": 30
            },
            "status": {}
        },
        {
            "apiVersion": "v1",
            "kind": "Service",
            "metadata": {
                "creationTimestamp": null,
                "name": "baz",
                "namespace": "test",
                "resourceVersion": "12"
            },
            "spec": {
                "sessionAffinity": "None",
                "type": "ClusterIP"
            },
            "status": {
                "loadBalancer": {}
            }
        }
    ],
    "kind": "List",
    "metadata": {
        "resourceVersion": "",
        "selfLink": ""
    }
}
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetMultipleTypeObjectsWithLabelSelector(t *testing.T) {
	pods, svc, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			if req.URL.Query().Get(metav1.LabelSelectorQueryParam("v1")) != "a=b" {
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
			}
			switch req.URL.Path {
			case "/namespaces/test/pods":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)}, nil
			case "/namespaces/test/services":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, svc)}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("selector", "a=b")
	cmd.Run(cmd, []string{"pods,services"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
bar       0/0                 0          <unknown>
NAME      TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
baz       ClusterIP   <none>       <none>        <none>    <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetMultipleTypeObjectsWithFieldSelector(t *testing.T) {
	pods, svc, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			if req.URL.Query().Get(metav1.FieldSelectorQueryParam("v1")) != "a=b" {
				t.Fatalf("unexpected request: %#v\n%#v", req.URL, req)
			}
			switch req.URL.Path {
			case "/namespaces/test/pods":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)}, nil
			case "/namespaces/test/services":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, svc)}, nil
			default:
				t.Fatalf("unexpected request: %#v\n%#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("field-selector", "a=b")
	cmd.Run(cmd, []string{"pods,services"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
bar       0/0                 0          <unknown>
NAME      TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
baz       ClusterIP   <none>       <none>        <none>    <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetMultipleTypeObjectsWithDirectReference(t *testing.T) {
	_, svc, _ := testData()
	node := &api.Node{
		ObjectMeta: metav1.ObjectMeta{
			Name: "foo",
		},
		Spec: api.NodeSpec{
			ExternalID: "ext",
		},
	}

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/nodes/foo":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, node)}, nil
			case "/namespaces/test/services/bar":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &svc.Items[0])}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Run(cmd, []string{"services/bar", "node/foo"})

	expected := `NAME      TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
baz       ClusterIP   <none>       <none>        <none>    <unknown>
NAME      STATUS    ROLES     AGE         VERSION
foo       Unknown   <none>    <unknown>   
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestGetByFormatForcesFlag(t *testing.T) {
	pods, _, _ := testData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods.Items[0])},
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Lookup("output").Value.Set("yaml")
	cmd.Flags().Set("show-all", "false")
	cmd.Run(cmd, []string{"pods"})

	showAllFlag, _ := cmd.Flags().GetBool("show-all")
	if showAllFlag {
		t.Error("expected showAll to not be true when getting resource")
	}
}

func watchTestData() ([]api.Pod, []watch.Event) {
	pods := []api.Pod{
		{
			ObjectMeta: metav1.ObjectMeta{
				Name:            "bar",
				Namespace:       "test",
				ResourceVersion: "9",
			},
			Spec: apitesting.DeepEqualSafePodSpec(),
		},
		{
			ObjectMeta: metav1.ObjectMeta{
				Name:            "foo",
				Namespace:       "test",
				ResourceVersion: "10",
			},
			Spec: apitesting.DeepEqualSafePodSpec(),
		},
	}
	events := []watch.Event{
		// current state events
		{
			Type: watch.Added,
			Object: &api.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:            "bar",
					Namespace:       "test",
					ResourceVersion: "9",
				},
				Spec: apitesting.DeepEqualSafePodSpec(),
			},
		},
		{
			Type: watch.Added,
			Object: &api.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:            "foo",
					Namespace:       "test",
					ResourceVersion: "10",
				},
				Spec: apitesting.DeepEqualSafePodSpec(),
			},
		},
		// resource events
		{
			Type: watch.Modified,
			Object: &api.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:            "foo",
					Namespace:       "test",
					ResourceVersion: "11",
				},
				Spec: apitesting.DeepEqualSafePodSpec(),
			},
		},
		{
			Type: watch.Deleted,
			Object: &api.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:            "foo",
					Namespace:       "test",
					ResourceVersion: "12",
				},
				Spec: apitesting.DeepEqualSafePodSpec(),
			},
		},
	}
	return pods, events
}

func TestWatchLabelSelector(t *testing.T) {
	pods, events := watchTestData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	podList := &api.PodList{
		Items: pods,
		ListMeta: metav1.ListMeta{
			ResourceVersion: "10",
		},
	}
	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			if req.URL.Query().Get(metav1.LabelSelectorQueryParam("v1")) != "a=b" {
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
			}
			switch req.URL.Path {
			case "/namespaces/test/pods":
				if req.URL.Query().Get("watch") == "true" {
					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[2:])}, nil
				}
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, podList)}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("watch", "true")
	cmd.Flags().Set("selector", "a=b")
	cmd.Run(cmd, []string{"pods"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
bar       0/0                 0          <unknown>
foo       0/0                 0          <unknown>
foo       0/0                 0         <unknown>
foo       0/0                 0         <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestWatchFieldSelector(t *testing.T) {
	pods, events := watchTestData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	podList := &api.PodList{
		Items: pods,
		ListMeta: metav1.ListMeta{
			ResourceVersion: "10",
		},
	}
	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			if req.URL.Query().Get(metav1.FieldSelectorQueryParam("v1")) != "a=b" {
				t.Fatalf("unexpected request: %#v\n%#v", req.URL, req)
			}
			switch req.URL.Path {
			case "/namespaces/test/pods":
				if req.URL.Query().Get("watch") == "true" {
					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[2:])}, nil
				}
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, podList)}, nil
			default:
				t.Fatalf("unexpected request: %#v\n%#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("watch", "true")
	cmd.Flags().Set("field-selector", "a=b")
	cmd.Run(cmd, []string{"pods"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
bar       0/0                 0          <unknown>
foo       0/0                 0          <unknown>
foo       0/0                 0         <unknown>
foo       0/0                 0         <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestWatchResource(t *testing.T) {
	pods, events := watchTestData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/namespaces/test/pods/foo":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods[1])}, nil
			case "/namespaces/test/pods":
				if req.URL.Query().Get("watch") == "true" && req.URL.Query().Get("fieldSelector") == "metadata.name=foo" {
					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[1:])}, nil
				}
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("watch", "true")
	cmd.Run(cmd, []string{"pods", "foo"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
foo       0/0                 0         <unknown>
foo       0/0                 0         <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestWatchResourceIdentifiedByFile(t *testing.T) {
	pods, events := watchTestData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/namespaces/test/replicationcontrollers/cassandra":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods[1])}, nil
			case "/namespaces/test/replicationcontrollers":
				if req.URL.Query().Get("watch") == "true" && req.URL.Query().Get("fieldSelector") == "metadata.name=cassandra" {
					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[1:])}, nil
				}
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("watch", "true")
	cmd.Flags().Set("filename", "../../../../test/e2e/testing-manifests/statefulset/cassandra/controller.yaml")
	cmd.Run(cmd, []string{})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
foo       0/0                 0         <unknown>
foo       0/0                 0         <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestWatchOnlyResource(t *testing.T) {
	pods, events := watchTestData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/namespaces/test/pods/foo":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods[1])}, nil
			case "/namespaces/test/pods":
				if req.URL.Query().Get("watch") == "true" && req.URL.Query().Get("fieldSelector") == "metadata.name=foo" {
					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[1:])}, nil
				}
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("watch-only", "true")
	cmd.Run(cmd, []string{"pods", "foo"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
foo       0/0                 0         <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func TestWatchOnlyList(t *testing.T) {
	pods, events := watchTestData()

	tf := cmdtesting.NewTestFactory()
	defer tf.Cleanup()
	codec := legacyscheme.Codecs.LegacyCodec(scheme.Versions...)

	podList := &api.PodList{
		Items: pods,
		ListMeta: metav1.ListMeta{
			ResourceVersion: "10",
		},
	}
	tf.UnstructuredClient = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			switch req.URL.Path {
			case "/namespaces/test/pods":
				if req.URL.Query().Get("watch") == "true" {
					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[2:])}, nil
				}
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, podList)}, nil
			default:
				t.Fatalf("request url: %#v,and request: %#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCmdGet(tf, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("watch-only", "true")
	cmd.Run(cmd, []string{"pods"})

	expected := `NAME      READY     STATUS    RESTARTS   AGE
foo       0/0                 0          <unknown>
foo       0/0                 0         <unknown>
`
	if e, a := expected, buf.String(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func watchBody(codec runtime.Codec, events []watch.Event) io.ReadCloser {
	buf := bytes.NewBuffer([]byte{})
	enc := restclientwatch.NewEncoder(streaming.NewEncoder(buf, codec), codec)
	for i := range events {
		enc.Encode(&events[i])
	}
	return json.Framer.NewFrameReader(ioutil.NopCloser(buf))
}