/*
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 cmd

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

	"k8s.io/apimachinery/pkg/api/meta"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"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/watch"
	restclient "k8s.io/client-go/rest"
	restclientwatch "k8s.io/client-go/rest/watch"
	"k8s.io/kubernetes/pkg/api"
	"k8s.io/kubernetes/pkg/api/testapi"
	apitesting "k8s.io/kubernetes/pkg/api/testing"
	"k8s.io/kubernetes/pkg/client/restclient/fake"
	cmdtesting "k8s.io/kubernetes/pkg/kubectl/cmd/testing"
)

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) {
	f, tf, _, _ := cmdtesting.NewAPIFactory()
	_, _, codec, _ := cmdtesting.NewTestFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, cmdtesting.NewInternalType("", "", "foo"))},
	}
	tf.Namespace = "test"
	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &api.Registry.GroupOrDie(api.GroupName).GroupVersion}}
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

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

	expected := []runtime.Object{cmdtesting.NewInternalType("", "", "foo")}
	actual := tf.Printer.(*testPrinter).Objects
	if len(actual) != len(expected) {
		t.Fatal(actual)
	}
	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(api.Codecs.LegacyCodec(), obj)
		actualMap := map[string]interface{}{}
		if err := encjson.Unmarshal([]byte(actualJSON), &actualMap); err != nil {
			t.Fatal(err)
		}

		if !reflect.DeepEqual(expectedMap, actualMap) {
			t.Errorf("unexpected object: \n%#v\n%#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) {
	f, tf, _, _ := cmdtesting.NewAPIFactory()
	tf.Mapper = testapi.Default.RESTMapper()
	tf.Typer = api.Scheme
	codec := testapi.Default.Codec()
	tf.Printer = &testPrinter{}
	tf.Client = &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.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Version: "v1"}}}
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

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

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

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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(f, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"pods", "foo"})

	expected := []runtime.Object{&pods.Items[0]}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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(),
			},
		},
	}

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Resp:                 &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)},
	}
	tf.Namespace = "test"
	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Version: "v1"}}}

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

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

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

	// expect sorted: a,b,c
	expected := []runtime.Object{&pods.Items[2], &pods.Items[1], &pods.Items[0]}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

func verifyObjects(t *testing.T, expected, actual []runtime.Object) {
	var actualObj runtime.Object
	var err error

	if len(actual) != len(expected) {
		t.Fatal(actual)
	}
	for i, obj := range actual {
		switch obj.(type) {
		case runtime.Unstructured, *runtime.Unknown:
			actualObj, err = runtime.Decode(
				api.Codecs.UniversalDecoder(),
				[]byte(runtime.EncodeOrDie(api.Codecs.LegacyCodec(), obj)))
		default:
			actualObj = obj
			err = nil
		}

		if err != nil {
			t.Fatal(err)
		}
		if !api.Semantic.DeepEqual(expected[i], actualObj) {
			t.Errorf("unexpected object: \n%#v\n%#v", expected[i], actualObj)
		}
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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(f, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Set("filename", "../../../examples/storage/cassandra/cassandra-controller.yaml")
	cmd.Run(cmd, []string{})

	expected := []runtime.Object{&pods.Items[0]}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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(f, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"pods"})

	expected, err := extractResourceList([]runtime.Object{pods})
	if err != nil {
		t.Fatal(err)
	}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

func extractResourceList(objs []runtime.Object) ([]runtime.Object, error) {
	finalObjs := []runtime.Object{}
	for _, obj := range objs {
		items, err := meta.ExtractList(obj)
		if err != nil {
			return nil, err
		}
		for _, item := range items {
			finalObjs = append(finalObjs, item)
		}
	}
	return finalObjs, nil
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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(f, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Flags().Set("show-all", "true")
	cmd.Run(cmd, []string{"pods"})

	expected, err := extractResourceList([]runtime.Object{pods})
	if err != nil {
		t.Fatal(err)
	}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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(f, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"componentstatuses"})

	expected, err := extractResourceList([]runtime.Object{statuses})
	if err != nil {
		t.Fatal(err)
	}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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("unexpected request: %#v\n%#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

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

	expected, err := extractResourceList([]runtime.Object{pods, svc})
	if err != nil {
		t.Fatal(err)
	}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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("unexpected request: %#v\n%#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &api.Registry.GroupOrDie(api.GroupName).GroupVersion}}
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

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

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

	if tf.Printer.(*testPrinter).Objects != nil {
		t.Errorf("unexpected print to default printer")
	}

	out, err := runtime.Decode(codec, buf.Bytes())
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	list, err := meta.ExtractList(out)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if errs := runtime.DecodeList(list, codec); len(errs) > 0 {
		t.Fatalf("unexpected error: %v", errs)
	}
	if err := meta.SetList(out, list); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	expected := &api.List{
		Items: []runtime.Object{
			&pods.Items[0],
			&pods.Items[1],
			&svc.Items[0],
		},
	}
	if !reflect.DeepEqual(expected, out) {
		t.Errorf("unexpected output: %#v", out)
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			if req.URL.Query().Get(metav1.LabelSelectorQueryParam(api.Registry.GroupOrDie(api.GroupName).GroupVersion.String())) != "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(f, buf, errBuf)
	cmd.SetOutput(buf)

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

	expected, err := extractResourceList([]runtime.Object{pods, svc})
	if err != nil {
		t.Fatal(err)
	}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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("unexpected request: %#v\n%#v", req.URL, req)
				return nil, nil
			}
		}),
	}
	tf.Namespace = "test"
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

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

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

	expected := []runtime.Object{&svc.Items[0], node}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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(f, buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"pods", "foo"})

	showAllFlag, _ := cmd.Flags().GetBool("show-all")
	if !showAllFlag {
		t.Errorf("expected showAll to be true when getting resource by name")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	podList := &api.PodList{
		Items: pods,
		ListMeta: metav1.ListMeta{
			ResourceVersion: "10",
		},
	}
	tf.Client = &fake.RESTClient{
		NegotiatedSerializer: unstructuredSerializer,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			if req.URL.Query().Get(metav1.LabelSelectorQueryParam(api.Registry.GroupOrDie(api.GroupName).GroupVersion.String())) != "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, podList)}, nil
			case "/watch/namespaces/test/pods":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[2:])}, 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(f, buf, errBuf)
	cmd.SetOutput(buf)

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

	expected := []runtime.Object{podList, events[2].Object, events[3].Object}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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 "/watch/namespaces/test/pods/foo":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[1:])}, 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(f, buf, errBuf)
	cmd.SetOutput(buf)

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

	expected := []runtime.Object{&pods[1], events[2].Object, events[3].Object}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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 "/watch/namespaces/test/replicationcontrollers/cassandra":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[1:])}, 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(f, buf, errBuf)
	cmd.SetOutput(buf)

	cmd.Flags().Set("watch", "true")
	cmd.Flags().Set("filename", "../../../examples/storage/cassandra/cassandra-controller.yaml")
	cmd.Run(cmd, []string{})

	expected := []runtime.Object{&pods[1], events[2].Object, events[3].Object}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	tf.Client = &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 "/watch/namespaces/test/pods/foo":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[1:])}, 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(f, buf, errBuf)
	cmd.SetOutput(buf)

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

	expected := []runtime.Object{events[2].Object, events[3].Object}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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

	f, tf, codec, _ := cmdtesting.NewAPIFactory()
	tf.Printer = &testPrinter{}
	podList := &api.PodList{
		Items: pods,
		ListMeta: metav1.ListMeta{
			ResourceVersion: "10",
		},
	}
	tf.Client = &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, podList)}, nil
			case "/watch/namespaces/test/pods":
				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: watchBody(codec, events[2:])}, 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(f, buf, errBuf)
	cmd.SetOutput(buf)

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

	expected := []runtime.Object{events[2].Object, events[3].Object}
	verifyObjects(t, expected, tf.Printer.(*testPrinter).Objects)

	if len(buf.String()) == 0 {
		t.Errorf("unexpected empty output")
	}
}

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))
}