k3s/pkg/printers/internalversion/describe_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 internalversion

import (
	"bytes"
	"fmt"
	"reflect"
	"strings"
	"testing"
	"time"

	apiequality "k8s.io/apimachinery/pkg/api/equality"
	"k8s.io/apimachinery/pkg/api/resource"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"k8s.io/apimachinery/pkg/util/intstr"
	"k8s.io/kubernetes/federation/apis/federation"
	fedfake "k8s.io/kubernetes/federation/client/clientset_generated/federation_internalclientset/fake"
	"k8s.io/kubernetes/pkg/api"
	"k8s.io/kubernetes/pkg/api/v1"
	"k8s.io/kubernetes/pkg/apis/autoscaling"
	"k8s.io/kubernetes/pkg/apis/extensions"
	"k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
	"k8s.io/kubernetes/pkg/apis/policy"
	"k8s.io/kubernetes/pkg/apis/storage"
	versionedfake "k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
	"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
	"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
	"k8s.io/kubernetes/pkg/printers"
	"k8s.io/kubernetes/pkg/util"
)

type describeClient struct {
	T         *testing.T
	Namespace string
	Err       error
	internalclientset.Interface
}

func TestDescribePod(t *testing.T) {
	fake := fake.NewSimpleClientset(&api.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "bar",
			Namespace: "foo",
		},
	})
	c := &describeClient{T: t, Namespace: "foo", Interface: fake}
	d := PodDescriber{c}
	out, err := d.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: true})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "bar") || !strings.Contains(out, "Status:") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestDescribePodTolerations(t *testing.T) {
	fake := fake.NewSimpleClientset(&api.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "bar",
			Namespace: "foo",
		},
		Spec: api.PodSpec{
			Tolerations: []api.Toleration{
				{Key: "key1", Value: "value1"},
				{Key: "key2", Value: "value2", Effect: api.TaintEffectNoExecute, TolerationSeconds: &[]int64{300}[0]},
			},
		},
	})
	c := &describeClient{T: t, Namespace: "foo", Interface: fake}
	d := PodDescriber{c}
	out, err := d.Describe("foo", "bar", printers.DescriberSettings{})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "key1=value1") || !strings.Contains(out, "key2=value2:NoExecute for 300s") || !strings.Contains(out, "Tolerations:") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestDescribeNamespace(t *testing.T) {
	fake := fake.NewSimpleClientset(&api.Namespace{
		ObjectMeta: metav1.ObjectMeta{
			Name: "myns",
		},
	})
	c := &describeClient{T: t, Namespace: "", Interface: fake}
	d := NamespaceDescriber{c}
	out, err := d.Describe("", "myns", printers.DescriberSettings{ShowEvents: true})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "myns") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestDescribeService(t *testing.T) {
	fake := fake.NewSimpleClientset(&api.Service{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "bar",
			Namespace: "foo",
		},
	})
	c := &describeClient{T: t, Namespace: "foo", Interface: fake}
	d := ServiceDescriber{c}
	out, err := d.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: true})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "Labels:") || !strings.Contains(out, "bar") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestPodDescribeResultsSorted(t *testing.T) {
	// Arrange
	fake := fake.NewSimpleClientset(
		&api.EventList{
			Items: []api.Event{
				{
					ObjectMeta:     metav1.ObjectMeta{Name: "one"},
					Source:         api.EventSource{Component: "kubelet"},
					Message:        "Item 1",
					FirstTimestamp: metav1.NewTime(time.Date(2014, time.January, 15, 0, 0, 0, 0, time.UTC)),
					LastTimestamp:  metav1.NewTime(time.Date(2014, time.January, 15, 0, 0, 0, 0, time.UTC)),
					Count:          1,
					Type:           api.EventTypeNormal,
				},
				{
					ObjectMeta:     metav1.ObjectMeta{Name: "two"},
					Source:         api.EventSource{Component: "scheduler"},
					Message:        "Item 2",
					FirstTimestamp: metav1.NewTime(time.Date(1987, time.June, 17, 0, 0, 0, 0, time.UTC)),
					LastTimestamp:  metav1.NewTime(time.Date(1987, time.June, 17, 0, 0, 0, 0, time.UTC)),
					Count:          1,
					Type:           api.EventTypeNormal,
				},
				{
					ObjectMeta:     metav1.ObjectMeta{Name: "three"},
					Source:         api.EventSource{Component: "kubelet"},
					Message:        "Item 3",
					FirstTimestamp: metav1.NewTime(time.Date(2002, time.December, 25, 0, 0, 0, 0, time.UTC)),
					LastTimestamp:  metav1.NewTime(time.Date(2002, time.December, 25, 0, 0, 0, 0, time.UTC)),
					Count:          1,
					Type:           api.EventTypeNormal,
				},
			},
		},
		&api.Pod{ObjectMeta: metav1.ObjectMeta{Namespace: "foo", Name: "bar"}},
	)
	c := &describeClient{T: t, Namespace: "foo", Interface: fake}
	d := PodDescriber{c}

	// Act
	out, err := d.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: true})

	// Assert
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	VerifyDatesInOrder(out, "\n" /* rowDelimiter */, "\t" /* columnDelimiter */, t)
}

// VerifyDatesInOrder checks the start of each line for a RFC1123Z date
// and posts error if all subsequent dates are not equal or increasing
func VerifyDatesInOrder(
	resultToTest, rowDelimiter, columnDelimiter string, t *testing.T) {
	lines := strings.Split(resultToTest, rowDelimiter)
	var previousTime time.Time
	for _, str := range lines {
		columns := strings.Split(str, columnDelimiter)
		if len(columns) > 0 {
			currentTime, err := time.Parse(time.RFC1123Z, columns[0])
			if err == nil {
				if previousTime.After(currentTime) {
					t.Errorf(
						"Output is not sorted by time. %s should be listed after %s. Complete output: %s",
						previousTime.Format(time.RFC1123Z),
						currentTime.Format(time.RFC1123Z),
						resultToTest)
				}
				previousTime = currentTime
			}
		}
	}
}

func TestDescribeContainers(t *testing.T) {
	trueVal := true
	testCases := []struct {
		container        api.Container
		status           api.ContainerStatus
		expectedElements []string
	}{
		// Running state.
		{
			container: api.Container{Name: "test", Image: "image"},
			status: api.ContainerStatus{
				Name: "test",
				State: api.ContainerState{
					Running: &api.ContainerStateRunning{
						StartedAt: metav1.NewTime(time.Now()),
					},
				},
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Running", "Ready", "True", "Restart Count", "7", "Image", "image", "Started"},
		},
		// Waiting state.
		{
			container: api.Container{Name: "test", Image: "image"},
			status: api.ContainerStatus{
				Name: "test",
				State: api.ContainerState{
					Waiting: &api.ContainerStateWaiting{
						Reason: "potato",
					},
				},
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "Reason", "potato"},
		},
		// Terminated state.
		{
			container: api.Container{Name: "test", Image: "image"},
			status: api.ContainerStatus{
				Name: "test",
				State: api.ContainerState{
					Terminated: &api.ContainerStateTerminated{
						StartedAt:  metav1.NewTime(time.Now()),
						FinishedAt: metav1.NewTime(time.Now()),
						Reason:     "potato",
						ExitCode:   2,
					},
				},
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Terminated", "Ready", "True", "Restart Count", "7", "Image", "image", "Reason", "potato", "Started", "Finished", "Exit Code", "2"},
		},
		// Last Terminated
		{
			container: api.Container{Name: "test", Image: "image"},
			status: api.ContainerStatus{
				Name: "test",
				State: api.ContainerState{
					Running: &api.ContainerStateRunning{
						StartedAt: metav1.NewTime(time.Now()),
					},
				},
				LastTerminationState: api.ContainerState{
					Terminated: &api.ContainerStateTerminated{
						StartedAt:  metav1.NewTime(time.Now().Add(time.Second * 3)),
						FinishedAt: metav1.NewTime(time.Now()),
						Reason:     "crashing",
						ExitCode:   3,
					},
				},
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Terminated", "Ready", "True", "Restart Count", "7", "Image", "image", "Started", "Finished", "Exit Code", "2", "crashing", "3"},
		},
		// No state defaults to waiting.
		{
			container: api.Container{Name: "test", Image: "image"},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image"},
		},
		// Env
		{
			container: api.Container{Name: "test", Image: "image", Env: []api.EnvVar{{Name: "envname", Value: "xyz"}}, EnvFrom: []api.EnvFromSource{{ConfigMapRef: &api.ConfigMapEnvSource{LocalObjectReference: api.LocalObjectReference{Name: "a123"}}}}},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "envname", "xyz", "a123\tConfigMap\tOptional: false"},
		},
		{
			container: api.Container{Name: "test", Image: "image", Env: []api.EnvVar{{Name: "envname", Value: "xyz"}}, EnvFrom: []api.EnvFromSource{{Prefix: "p_", ConfigMapRef: &api.ConfigMapEnvSource{LocalObjectReference: api.LocalObjectReference{Name: "a123"}}}}},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "envname", "xyz", "a123\tConfigMap with prefix 'p_'\tOptional: false"},
		},
		{
			container: api.Container{Name: "test", Image: "image", Env: []api.EnvVar{{Name: "envname", Value: "xyz"}}, EnvFrom: []api.EnvFromSource{{ConfigMapRef: &api.ConfigMapEnvSource{Optional: &trueVal, LocalObjectReference: api.LocalObjectReference{Name: "a123"}}}}},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "envname", "xyz", "a123\tConfigMap\tOptional: true"},
		},
		{
			container: api.Container{Name: "test", Image: "image", Env: []api.EnvVar{{Name: "envname", Value: "xyz"}}, EnvFrom: []api.EnvFromSource{{SecretRef: &api.SecretEnvSource{LocalObjectReference: api.LocalObjectReference{Name: "a123"}, Optional: &trueVal}}}},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "envname", "xyz", "a123\tSecret\tOptional: true"},
		},
		{
			container: api.Container{Name: "test", Image: "image", Env: []api.EnvVar{{Name: "envname", Value: "xyz"}}, EnvFrom: []api.EnvFromSource{{Prefix: "p_", SecretRef: &api.SecretEnvSource{LocalObjectReference: api.LocalObjectReference{Name: "a123"}}}}},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "envname", "xyz", "a123\tSecret with prefix 'p_'\tOptional: false"},
		},
		// Command
		{
			container: api.Container{Name: "test", Image: "image", Command: []string{"sleep", "1000"}},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "sleep", "1000"},
		},
		// Args
		{
			container: api.Container{Name: "test", Image: "image", Args: []string{"time", "1000"}},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"test", "State", "Waiting", "Ready", "True", "Restart Count", "7", "Image", "image", "time", "1000"},
		},
		// Using limits.
		{
			container: api.Container{
				Name:  "test",
				Image: "image",
				Resources: api.ResourceRequirements{
					Limits: api.ResourceList{
						api.ResourceName(api.ResourceCPU):     resource.MustParse("1000"),
						api.ResourceName(api.ResourceMemory):  resource.MustParse("4G"),
						api.ResourceName(api.ResourceStorage): resource.MustParse("20G"),
					},
				},
			},
			status: api.ContainerStatus{
				Name:         "test",
				Ready:        true,
				RestartCount: 7,
			},
			expectedElements: []string{"cpu", "1k", "memory", "4G", "storage", "20G"},
		},
		// Using requests.
		{
			container: api.Container{
				Name:  "test",
				Image: "image",
				Resources: api.ResourceRequirements{
					Requests: api.ResourceList{
						api.ResourceName(api.ResourceCPU):     resource.MustParse("1000"),
						api.ResourceName(api.ResourceMemory):  resource.MustParse("4G"),
						api.ResourceName(api.ResourceStorage): resource.MustParse("20G"),
					},
				},
			},
			expectedElements: []string{"cpu", "1k", "memory", "4G", "storage", "20G"},
		},
	}

	for i, testCase := range testCases {
		out := new(bytes.Buffer)
		pod := api.Pod{
			Spec: api.PodSpec{
				Containers: []api.Container{testCase.container},
			},
			Status: api.PodStatus{
				ContainerStatuses: []api.ContainerStatus{testCase.status},
			},
		}
		writer := NewPrefixWriter(out)
		describeContainers("Containers", pod.Spec.Containers, pod.Status.ContainerStatuses, EnvValueRetriever(&pod), writer, "")
		output := out.String()
		for _, expected := range testCase.expectedElements {
			if !strings.Contains(output, expected) {
				t.Errorf("Test case %d: expected to find %q in output: %q", i, expected, output)
			}
		}
	}
}

func TestDescribers(t *testing.T) {
	first := &api.Event{}
	second := &api.Pod{}
	var third *api.Pod
	testErr := fmt.Errorf("test")
	d := Describers{}
	d.Add(
		func(e *api.Event, p *api.Pod) (string, error) {
			if e != first {
				t.Errorf("first argument not equal: %#v", e)
			}
			if p != second {
				t.Errorf("second argument not equal: %#v", p)
			}
			return "test", testErr
		},
	)
	if out, err := d.DescribeObject(first, second); out != "test" || err != testErr {
		t.Errorf("unexpected result: %s %v", out, err)
	}

	if out, err := d.DescribeObject(first, second, third); out != "" || err == nil {
		t.Errorf("unexpected result: %s %v", out, err)
	} else {
		if noDescriber, ok := err.(printers.ErrNoDescriber); ok {
			if !reflect.DeepEqual(noDescriber.Types, []string{"*api.Event", "*api.Pod", "*api.Pod"}) {
				t.Errorf("unexpected describer: %v", err)
			}
		} else {
			t.Errorf("unexpected error type: %v", err)
		}
	}

	d.Add(
		func(e *api.Event) (string, error) {
			if e != first {
				t.Errorf("first argument not equal: %#v", e)
			}
			return "simpler", testErr
		},
	)
	if out, err := d.DescribeObject(first); out != "simpler" || err != testErr {
		t.Errorf("unexpected result: %s %v", out, err)
	}
}

func TestDefaultDescribers(t *testing.T) {
	out, err := DefaultObjectDescriber.DescribeObject(&api.Pod{ObjectMeta: metav1.ObjectMeta{Name: "foo"}})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "foo") {
		t.Errorf("unexpected output: %s", out)
	}

	out, err = DefaultObjectDescriber.DescribeObject(&api.Service{ObjectMeta: metav1.ObjectMeta{Name: "foo"}})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "foo") {
		t.Errorf("unexpected output: %s", out)
	}

	out, err = DefaultObjectDescriber.DescribeObject(&api.ReplicationController{ObjectMeta: metav1.ObjectMeta{Name: "foo"}})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "foo") {
		t.Errorf("unexpected output: %s", out)
	}

	out, err = DefaultObjectDescriber.DescribeObject(&api.Node{ObjectMeta: metav1.ObjectMeta{Name: "foo"}})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "foo") {
		t.Errorf("unexpected output: %s", out)
	}
}

func TestGetPodsTotalRequests(t *testing.T) {
	testCases := []struct {
		pods                         *api.PodList
		expectedReqs, expectedLimits map[api.ResourceName]resource.Quantity
	}{
		{
			pods: &api.PodList{
				Items: []api.Pod{
					{
						Spec: api.PodSpec{
							Containers: []api.Container{
								{
									Resources: api.ResourceRequirements{
										Requests: api.ResourceList{
											api.ResourceName(api.ResourceCPU):     resource.MustParse("1"),
											api.ResourceName(api.ResourceMemory):  resource.MustParse("300Mi"),
											api.ResourceName(api.ResourceStorage): resource.MustParse("1G"),
										},
									},
								},
								{
									Resources: api.ResourceRequirements{
										Requests: api.ResourceList{
											api.ResourceName(api.ResourceCPU):     resource.MustParse("90m"),
											api.ResourceName(api.ResourceMemory):  resource.MustParse("120Mi"),
											api.ResourceName(api.ResourceStorage): resource.MustParse("200M"),
										},
									},
								},
							},
						},
					},
					{
						Spec: api.PodSpec{
							Containers: []api.Container{
								{
									Resources: api.ResourceRequirements{
										Requests: api.ResourceList{
											api.ResourceName(api.ResourceCPU):     resource.MustParse("60m"),
											api.ResourceName(api.ResourceMemory):  resource.MustParse("43Mi"),
											api.ResourceName(api.ResourceStorage): resource.MustParse("500M"),
										},
									},
								},
								{
									Resources: api.ResourceRequirements{
										Requests: api.ResourceList{
											api.ResourceName(api.ResourceCPU):     resource.MustParse("34m"),
											api.ResourceName(api.ResourceMemory):  resource.MustParse("83Mi"),
											api.ResourceName(api.ResourceStorage): resource.MustParse("700M"),
										},
									},
								},
							},
						},
					},
				},
			},
			expectedReqs: map[api.ResourceName]resource.Quantity{
				api.ResourceName(api.ResourceCPU):     resource.MustParse("1.184"),
				api.ResourceName(api.ResourceMemory):  resource.MustParse("546Mi"),
				api.ResourceName(api.ResourceStorage): resource.MustParse("2.4G"),
			},
		},
	}

	for _, testCase := range testCases {
		reqs, _, err := getPodsTotalRequestsAndLimits(testCase.pods)
		if err != nil {
			t.Errorf("Unexpected error %v", err)
		}
		if !apiequality.Semantic.DeepEqual(reqs, testCase.expectedReqs) {
			t.Errorf("Expected %v, got %v", testCase.expectedReqs, reqs)
		}
	}
}

func TestPersistentVolumeDescriber(t *testing.T) {
	tests := map[string]*api.PersistentVolume{

		"hostpath": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					HostPath: &api.HostPathVolumeSource{},
				},
			},
		},
		"gce": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{},
				},
			},
		},
		"ebs": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					AWSElasticBlockStore: &api.AWSElasticBlockStoreVolumeSource{},
				},
			},
		},
		"nfs": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					NFS: &api.NFSVolumeSource{},
				},
			},
		},
		"iscsi": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					ISCSI: &api.ISCSIVolumeSource{},
				},
			},
		},
		"gluster": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					Glusterfs: &api.GlusterfsVolumeSource{},
				},
			},
		},
		"rbd": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					RBD: &api.RBDVolumeSource{},
				},
			},
		},
		"quobyte": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					Quobyte: &api.QuobyteVolumeSource{},
				},
			},
		},
		"cinder": {
			ObjectMeta: metav1.ObjectMeta{Name: "bar"},
			Spec: api.PersistentVolumeSpec{
				PersistentVolumeSource: api.PersistentVolumeSource{
					Cinder: &api.CinderVolumeSource{},
				},
			},
		},
	}

	for name, pv := range tests {
		fake := fake.NewSimpleClientset(pv)
		c := PersistentVolumeDescriber{fake}
		str, err := c.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: true})
		if err != nil {
			t.Errorf("Unexpected error for test %s: %v", name, err)
		}
		if str == "" {
			t.Errorf("Unexpected empty string for test %s.  Expected PV Describer output", name)
		}
	}
}

func TestDescribeDeployment(t *testing.T) {
	fake := fake.NewSimpleClientset()
	versionedFake := versionedfake.NewSimpleClientset(&v1beta1.Deployment{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "bar",
			Namespace: "foo",
		},
		Spec: v1beta1.DeploymentSpec{
			Replicas: util.Int32Ptr(1),
			Selector: &metav1.LabelSelector{},
			Template: v1.PodTemplateSpec{
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{Image: "mytest-image:latest"},
					},
				},
			},
		},
	})
	d := DeploymentDescriber{fake, versionedFake}
	out, err := d.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: true})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "bar") || !strings.Contains(out, "foo") || !strings.Contains(out, "Containers:") || !strings.Contains(out, "mytest-image:latest") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestDescribeCluster(t *testing.T) {
	cluster := federation.Cluster{
		ObjectMeta: metav1.ObjectMeta{
			Name:            "foo",
			ResourceVersion: "4",
			Labels: map[string]string{
				"name": "foo",
			},
		},
		Spec: federation.ClusterSpec{
			ServerAddressByClientCIDRs: []federation.ServerAddressByClientCIDR{
				{
					ClientCIDR:    "0.0.0.0/0",
					ServerAddress: "localhost:8888",
				},
			},
		},
		Status: federation.ClusterStatus{
			Conditions: []federation.ClusterCondition{
				{Type: federation.ClusterReady, Status: api.ConditionTrue},
			},
		},
	}
	fake := fedfake.NewSimpleClientset(&cluster)
	d := ClusterDescriber{Interface: fake}
	out, err := d.Describe("any", "foo", printers.DescriberSettings{ShowEvents: true})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "foo") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestDescribeStorageClass(t *testing.T) {
	f := fake.NewSimpleClientset(&storage.StorageClass{
		ObjectMeta: metav1.ObjectMeta{
			Name:            "foo",
			ResourceVersion: "4",
			Annotations: map[string]string{
				"name": "foo",
			},
		},
		Provisioner: "my-provisioner",
		Parameters: map[string]string{
			"param1": "value1",
			"param2": "value2",
		},
	})
	s := StorageClassDescriber{f}
	out, err := s.Describe("", "foo", printers.DescriberSettings{ShowEvents: true})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "foo") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestDescribePodDisruptionBudget(t *testing.T) {
	f := fake.NewSimpleClientset(&policy.PodDisruptionBudget{
		ObjectMeta: metav1.ObjectMeta{
			Namespace:         "ns1",
			Name:              "pdb1",
			CreationTimestamp: metav1.Time{Time: time.Now().Add(1.9e9)},
		},
		Spec: policy.PodDisruptionBudgetSpec{
			MinAvailable: intstr.FromInt(22),
		},
		Status: policy.PodDisruptionBudgetStatus{
			PodDisruptionsAllowed: 5,
		},
	})
	s := PodDisruptionBudgetDescriber{f}
	out, err := s.Describe("ns1", "pdb1", printers.DescriberSettings{ShowEvents: true})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if !strings.Contains(out, "pdb1") {
		t.Errorf("unexpected out: %s", out)
	}
}

func TestDescribeHorizontalPodAutoscaler(t *testing.T) {
	minReplicasVal := int32(2)
	targetUtilizationVal := int32(80)
	currentUtilizationVal := int32(50)
	tests := []struct {
		name string
		hpa  autoscaling.HorizontalPodAutoscaler
	}{
		{
			"minReplicas unset",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MaxReplicas: 10,
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
				},
			},
		},
		{
			"pods source type (no current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.PodsMetricSourceType,
							Pods: &autoscaling.PodsMetricSource{
								MetricName:         "some-pods-metric",
								TargetAverageValue: *resource.NewMilliQuantity(100, resource.DecimalSI),
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
				},
			},
		},
		{
			"pods source type (with current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.PodsMetricSourceType,
							Pods: &autoscaling.PodsMetricSource{
								MetricName:         "some-pods-metric",
								TargetAverageValue: *resource.NewMilliQuantity(100, resource.DecimalSI),
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
					CurrentMetrics: []autoscaling.MetricStatus{
						{
							Type: autoscaling.PodsMetricSourceType,
							Pods: &autoscaling.PodsMetricStatus{
								MetricName:          "some-pods-metric",
								CurrentAverageValue: *resource.NewMilliQuantity(50, resource.DecimalSI),
							},
						},
					},
				},
			},
		},
		{
			"object source type (no current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.ObjectMetricSourceType,
							Object: &autoscaling.ObjectMetricSource{
								Target: autoscaling.CrossVersionObjectReference{
									Name: "some-service",
									Kind: "Service",
								},
								MetricName:  "some-service-metric",
								TargetValue: *resource.NewMilliQuantity(100, resource.DecimalSI),
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
				},
			},
		},
		{
			"object source type (with current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.ObjectMetricSourceType,
							Object: &autoscaling.ObjectMetricSource{
								Target: autoscaling.CrossVersionObjectReference{
									Name: "some-service",
									Kind: "Service",
								},
								MetricName:  "some-service-metric",
								TargetValue: *resource.NewMilliQuantity(100, resource.DecimalSI),
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
					CurrentMetrics: []autoscaling.MetricStatus{
						{
							Type: autoscaling.ObjectMetricSourceType,
							Object: &autoscaling.ObjectMetricStatus{
								Target: autoscaling.CrossVersionObjectReference{
									Name: "some-service",
									Kind: "Service",
								},
								MetricName:   "some-service-metric",
								CurrentValue: *resource.NewMilliQuantity(50, resource.DecimalSI),
							},
						},
					},
				},
			},
		},
		{
			"resource source type, target average value (no current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricSource{
								Name:               api.ResourceCPU,
								TargetAverageValue: resource.NewMilliQuantity(100, resource.DecimalSI),
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
				},
			},
		},
		{
			"resource source type, target average value (with current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricSource{
								Name:               api.ResourceCPU,
								TargetAverageValue: resource.NewMilliQuantity(100, resource.DecimalSI),
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
					CurrentMetrics: []autoscaling.MetricStatus{
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricStatus{
								Name:                api.ResourceCPU,
								CurrentAverageValue: *resource.NewMilliQuantity(50, resource.DecimalSI),
							},
						},
					},
				},
			},
		},
		{
			"resource source type, target utilization (no current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricSource{
								Name: api.ResourceCPU,
								TargetAverageUtilization: &targetUtilizationVal,
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
				},
			},
		},
		{
			"resource source type, target utilization (with current)",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricSource{
								Name: api.ResourceCPU,
								TargetAverageUtilization: &targetUtilizationVal,
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
					CurrentMetrics: []autoscaling.MetricStatus{
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricStatus{
								Name: api.ResourceCPU,
								CurrentAverageUtilization: &currentUtilizationVal,
								CurrentAverageValue:       *resource.NewMilliQuantity(40, resource.DecimalSI),
							},
						},
					},
				},
			},
		},
		{
			"multiple metrics",
			autoscaling.HorizontalPodAutoscaler{
				Spec: autoscaling.HorizontalPodAutoscalerSpec{
					ScaleTargetRef: autoscaling.CrossVersionObjectReference{
						Name: "some-rc",
						Kind: "ReplicationController",
					},
					MinReplicas: &minReplicasVal,
					MaxReplicas: 10,
					Metrics: []autoscaling.MetricSpec{
						{
							Type: autoscaling.PodsMetricSourceType,
							Pods: &autoscaling.PodsMetricSource{
								MetricName:         "some-pods-metric",
								TargetAverageValue: *resource.NewMilliQuantity(100, resource.DecimalSI),
							},
						},
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricSource{
								Name: api.ResourceCPU,
								TargetAverageUtilization: &targetUtilizationVal,
							},
						},
						{
							Type: autoscaling.PodsMetricSourceType,
							Pods: &autoscaling.PodsMetricSource{
								MetricName:         "other-pods-metric",
								TargetAverageValue: *resource.NewMilliQuantity(400, resource.DecimalSI),
							},
						},
					},
				},
				Status: autoscaling.HorizontalPodAutoscalerStatus{
					CurrentReplicas: 4,
					DesiredReplicas: 5,
					CurrentMetrics: []autoscaling.MetricStatus{
						{
							Type: autoscaling.PodsMetricSourceType,
							Pods: &autoscaling.PodsMetricStatus{
								MetricName:          "some-pods-metric",
								CurrentAverageValue: *resource.NewMilliQuantity(50, resource.DecimalSI),
							},
						},
						{
							Type: autoscaling.ResourceMetricSourceType,
							Resource: &autoscaling.ResourceMetricStatus{
								Name: api.ResourceCPU,
								CurrentAverageUtilization: &currentUtilizationVal,
								CurrentAverageValue:       *resource.NewMilliQuantity(40, resource.DecimalSI),
							},
						},
					},
				},
			},
		},
	}

	for _, test := range tests {
		test.hpa.ObjectMeta = metav1.ObjectMeta{
			Name:      "bar",
			Namespace: "foo",
		}
		fake := fake.NewSimpleClientset(&test.hpa)
		desc := HorizontalPodAutoscalerDescriber{fake}
		str, err := desc.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: true})
		if err != nil {
			t.Errorf("Unexpected error for test %s: %v", test.name, err)
		}
		if str == "" {
			t.Errorf("Unexpected empty string for test %s.  Expected HPA Describer output", test.name)
		}
		t.Logf("Description for %q:\n%s", test.name, str)
	}
}

func TestDescribeEvents(t *testing.T) {

	events := &api.EventList{
		Items: []api.Event{
			{
				ObjectMeta: metav1.ObjectMeta{
					Namespace: "foo",
				},
				Source:         api.EventSource{Component: "kubelet"},
				Message:        "Item 1",
				FirstTimestamp: metav1.NewTime(time.Date(2014, time.January, 15, 0, 0, 0, 0, time.UTC)),
				LastTimestamp:  metav1.NewTime(time.Date(2014, time.January, 15, 0, 0, 0, 0, time.UTC)),
				Count:          1,
				Type:           api.EventTypeNormal,
			},
		},
	}

	m := map[string]printers.Describer{
		"DaemonSetDescriber": &DaemonSetDescriber{
			fake.NewSimpleClientset(&extensions.DaemonSet{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
			}, events),
		},
		"DeploymentDescriber": &DeploymentDescriber{
			fake.NewSimpleClientset(events),
			versionedfake.NewSimpleClientset(&v1beta1.Deployment{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
				Spec: v1beta1.DeploymentSpec{
					Replicas: util.Int32Ptr(1),
					Selector: &metav1.LabelSelector{},
				},
			}),
		},
		"EndpointsDescriber": &EndpointsDescriber{
			fake.NewSimpleClientset(&api.Endpoints{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
			}, events),
		},
		// TODO(jchaloup): add tests for:
		// - IngressDescriber
		// - JobDescriber
		"NodeDescriber": &NodeDescriber{
			fake.NewSimpleClientset(&api.Node{
				ObjectMeta: metav1.ObjectMeta{
					Name:     "bar",
					SelfLink: "url/url/url",
				},
			}, events),
		},
		"PersistentVolumeDescriber": &PersistentVolumeDescriber{
			fake.NewSimpleClientset(&api.PersistentVolume{
				ObjectMeta: metav1.ObjectMeta{
					Name:     "bar",
					SelfLink: "url/url/url",
				},
			}, events),
		},
		"PodDescriber": &PodDescriber{
			fake.NewSimpleClientset(&api.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
					SelfLink:  "url/url/url",
				},
			}, events),
		},
		"ReplicaSetDescriber": &ReplicaSetDescriber{
			fake.NewSimpleClientset(&extensions.ReplicaSet{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
			}, events),
		},
		"ReplicationControllerDescriber": &ReplicationControllerDescriber{
			fake.NewSimpleClientset(&api.ReplicationController{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
			}, events),
		},
		"Service": &ServiceDescriber{
			fake.NewSimpleClientset(&api.Service{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
			}, events),
		},
		"StorageClass": &StorageClassDescriber{
			fake.NewSimpleClientset(&storage.StorageClass{
				ObjectMeta: metav1.ObjectMeta{
					Name: "bar",
				},
			}, events),
		},
		"HorizontalPodAutoscaler": &HorizontalPodAutoscalerDescriber{
			fake.NewSimpleClientset(&autoscaling.HorizontalPodAutoscaler{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
			}, events),
		},
		"ConfigMap": &ConfigMapDescriber{
			fake.NewSimpleClientset(&api.ConfigMap{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "bar",
					Namespace: "foo",
				},
			}, events),
		},
	}

	for name, d := range m {
		out, err := d.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: true})
		if err != nil {
			t.Errorf("unexpected error for %q: %v", name, err)
		}
		if !strings.Contains(out, "bar") {
			t.Errorf("unexpected out for %q: %s", name, out)
		}
		if !strings.Contains(out, "Events:") {
			t.Errorf("events not found for %q when ShowEvents=true: %s", name, out)
		}

		out, err = d.Describe("foo", "bar", printers.DescriberSettings{ShowEvents: false})
		if err != nil {
			t.Errorf("unexpected error for %q: %s", name, err)
		}
		if !strings.Contains(out, "bar") {
			t.Errorf("unexpected out for %q: %s", name, out)
		}
		if strings.Contains(out, "Events:") {
			t.Errorf("events found for %q when ShowEvents=false: %s", name, out)
		}
	}
}

func TestPrintLabelsMultiline(t *testing.T) {
	var maxLenAnnotationStr string = "MaxLenAnnotation=Multicast addressing can be used in the link layer (Layer 2 in the OSI model), such as Ethernet multicast, and at the internet layer (Layer 3 for OSI) for Internet Protocol Version 4 "
	testCases := []struct {
		annotations map[string]string
		expectPrint string
	}{
		{
			annotations: map[string]string{"col1": "asd", "COL2": "zxc"},
			expectPrint: "Annotations:\tCOL2=zxc\n\tcol1=asd\n",
		},
		{
			annotations: map[string]string{"MaxLenAnnotation": maxLenAnnotationStr[17:]},
			expectPrint: "Annotations:\t" + maxLenAnnotationStr + "\n",
		},
		{
			annotations: map[string]string{"MaxLenAnnotation": maxLenAnnotationStr[17:] + "1"},
			expectPrint: "Annotations:\t" + maxLenAnnotationStr + "...\n",
		},
		{
			annotations: map[string]string{},
			expectPrint: "Annotations:\t<none>\n",
		},
	}
	for i, testCase := range testCases {
		out := new(bytes.Buffer)
		writer := NewPrefixWriter(out)
		printAnnotationsMultiline(writer, "Annotations", testCase.annotations)
		output := out.String()
		if output != testCase.expectPrint {
			t.Errorf("Test case %d: expected to find %q in output: %q", i, testCase.expectPrint, output)
		}
	}
}

func TestDescribeUnstructuredContent(t *testing.T) {
	testCases := []struct {
		expected   string
		unexpected string
	}{
		{
			expected: `API Version:	v1
Dummy 2:	present
Items:
  Item Bool:	true
  Item Int:	42
Kind:	Test
Metadata:
  Creation Timestamp:	2017-04-01T00:00:00Z
  Name:	MyName
  Namespace:	MyNamespace
  Resource Version:	123
  UID:	00000000-0000-0000-0000-000000000001
Status:	ok
URL:	http://localhost
`,
		},
		{
			unexpected: "\nDummy 1:\tpresent\n",
		},
		{
			unexpected: "Dummy 1",
		},
		{
			unexpected: "Dummy 3",
		},
		{
			unexpected: "Dummy3",
		},
		{
			unexpected: "dummy3",
		},
		{
			unexpected: "dummy 3",
		},
	}
	out := new(bytes.Buffer)
	w := NewPrefixWriter(out)
	obj := &unstructured.Unstructured{
		Object: map[string]interface{}{
			"apiVersion": "v1",
			"kind":       "Test",
			"dummy1":     "present",
			"dummy2":     "present",
			"metadata": map[string]interface{}{
				"name":              "MyName",
				"namespace":         "MyNamespace",
				"creationTimestamp": "2017-04-01T00:00:00Z",
				"resourceVersion":   123,
				"uid":               "00000000-0000-0000-0000-000000000001",
				"dummy3":            "present",
			},
			"items": []interface{}{
				map[string]interface{}{
					"itemBool": true,
					"itemInt":  42,
				},
			},
			"url":    "http://localhost",
			"status": "ok",
		},
	}
	printUnstructuredContent(w, LEVEL_0, obj.UnstructuredContent(), "", ".dummy1", ".metadata.dummy3")
	output := out.String()

	for _, test := range testCases {
		if len(test.expected) > 0 {
			if !strings.Contains(output, test.expected) {
				t.Errorf("Expected to find %q in: %q", test.expected, output)
			}
		}
		if len(test.unexpected) > 0 {
			if strings.Contains(output, test.unexpected) {
				t.Errorf("Didn't expect to find %q in: %q", test.unexpected, output)
			}
		}
	}
}