343 lines
11 KiB
Go
343 lines
11 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package describe
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import (
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"fmt"
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"net/http"
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"strings"
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"testing"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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"k8s.io/cli-runtime/pkg/genericiooptions"
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"k8s.io/cli-runtime/pkg/resource"
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"k8s.io/client-go/rest/fake"
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cmdtesting "k8s.io/kubectl/pkg/cmd/testing"
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"k8s.io/kubectl/pkg/describe"
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"k8s.io/kubectl/pkg/scheme"
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)
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// Verifies that schemas that are not in the master tree of Kubernetes can be retrieved via Get.
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func TestDescribeUnknownSchemaObject(t *testing.T) {
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d := &testDescriber{Output: "test output"}
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oldFn := describe.DescriberFn
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defer func() {
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describe.DescriberFn = oldFn
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}()
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describe.DescriberFn = d.describerFor
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tf := cmdtesting.NewTestFactory().WithNamespace("non-default")
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defer tf.Cleanup()
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_, _, codec := cmdtesting.NewExternalScheme()
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Resp: &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, cmdtesting.NewInternalType("", "", "foo"))},
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}
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streams, _, buf, _ := genericiooptions.NewTestIOStreams()
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cmd := NewCmdDescribe("kubectl", tf, streams)
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cmd.Run(cmd, []string{"type", "foo"})
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if d.Name != "foo" || d.Namespace != "" {
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t.Errorf("unexpected describer: %#v", d)
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}
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if buf.String() != d.Output {
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t.Errorf("unexpected output: %s", buf.String())
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}
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}
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// Verifies that schemas that are not in the master tree of Kubernetes can be retrieved via Get.
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func TestDescribeUnknownNamespacedSchemaObject(t *testing.T) {
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d := &testDescriber{Output: "test output"}
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oldFn := describe.DescriberFn
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defer func() {
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describe.DescriberFn = oldFn
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}()
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describe.DescriberFn = d.describerFor
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tf := cmdtesting.NewTestFactory()
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defer tf.Cleanup()
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_, _, codec := cmdtesting.NewExternalScheme()
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Resp: &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, cmdtesting.NewInternalNamespacedType("", "", "foo", "non-default"))},
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}
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tf.WithNamespace("non-default")
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streams, _, buf, _ := genericiooptions.NewTestIOStreams()
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cmd := NewCmdDescribe("kubectl", tf, streams)
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cmd.Run(cmd, []string{"namespacedtype", "foo"})
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if d.Name != "foo" || d.Namespace != "non-default" {
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t.Errorf("unexpected describer: %#v", d)
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}
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if buf.String() != d.Output {
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t.Errorf("unexpected output: %s", buf.String())
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}
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}
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func TestDescribeObject(t *testing.T) {
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d := &testDescriber{Output: "test output"}
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oldFn := describe.DescriberFn
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defer func() {
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describe.DescriberFn = oldFn
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}()
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describe.DescriberFn = d.describerFor
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_, _, rc := cmdtesting.TestData()
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tf := cmdtesting.NewTestFactory().WithNamespace("test")
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defer tf.Cleanup()
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codec := scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
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switch p, m := req.URL.Path, req.Method; {
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case p == "/namespaces/test/replicationcontrollers/redis-master" && m == "GET":
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return &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, &rc.Items[0])}, nil
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default:
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t.Fatalf("unexpected request: %#v\n%#v", req.URL, req)
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return nil, nil
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}
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}),
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}
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streams, _, buf, _ := genericiooptions.NewTestIOStreams()
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cmd := NewCmdDescribe("kubectl", tf, streams)
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cmd.Flags().Set("filename", "../../../testdata/redis-master-controller.yaml")
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cmd.Run(cmd, []string{})
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if d.Name != "redis-master" || d.Namespace != "test" {
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t.Errorf("unexpected describer: %#v", d)
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}
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if buf.String() != d.Output {
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t.Errorf("unexpected output: %s", buf.String())
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}
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}
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func TestDescribeListObjects(t *testing.T) {
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d := &testDescriber{Output: "test output"}
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oldFn := describe.DescriberFn
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defer func() {
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describe.DescriberFn = oldFn
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}()
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describe.DescriberFn = d.describerFor
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pods, _, _ := cmdtesting.TestData()
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tf := cmdtesting.NewTestFactory().WithNamespace("test")
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defer tf.Cleanup()
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codec := scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Resp: &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, pods)},
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}
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streams, _, buf, _ := genericiooptions.NewTestIOStreams()
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cmd := NewCmdDescribe("kubectl", tf, streams)
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cmd.Run(cmd, []string{"pods"})
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if buf.String() != fmt.Sprintf("%s\n\n%s", d.Output, d.Output) {
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t.Errorf("unexpected output: %s", buf.String())
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}
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}
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func TestDescribeObjectShowEvents(t *testing.T) {
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d := &testDescriber{Output: "test output"}
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oldFn := describe.DescriberFn
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defer func() {
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describe.DescriberFn = oldFn
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}()
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describe.DescriberFn = d.describerFor
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pods, _, _ := cmdtesting.TestData()
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tf := cmdtesting.NewTestFactory().WithNamespace("test")
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defer tf.Cleanup()
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codec := scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Resp: &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, pods)},
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}
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cmd := NewCmdDescribe("kubectl", tf, genericiooptions.NewTestIOStreamsDiscard())
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cmd.Flags().Set("show-events", "true")
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cmd.Run(cmd, []string{"pods"})
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if d.Settings.ShowEvents != true {
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t.Errorf("ShowEvents = true expected, got ShowEvents = %v", d.Settings.ShowEvents)
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}
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}
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func TestDescribeObjectSkipEvents(t *testing.T) {
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d := &testDescriber{Output: "test output"}
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oldFn := describe.DescriberFn
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defer func() {
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describe.DescriberFn = oldFn
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}()
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describe.DescriberFn = d.describerFor
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pods, _, _ := cmdtesting.TestData()
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tf := cmdtesting.NewTestFactory().WithNamespace("test")
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defer tf.Cleanup()
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codec := scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Resp: &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, pods)},
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}
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cmd := NewCmdDescribe("kubectl", tf, genericiooptions.NewTestIOStreamsDiscard())
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cmd.Flags().Set("show-events", "false")
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cmd.Run(cmd, []string{"pods"})
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if d.Settings.ShowEvents != false {
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t.Errorf("ShowEvents = false expected, got ShowEvents = %v", d.Settings.ShowEvents)
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}
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}
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func TestDescribeObjectChunkSize(t *testing.T) {
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d := &testDescriber{Output: "test output"}
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oldFn := describe.DescriberFn
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defer func() {
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describe.DescriberFn = oldFn
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}()
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describe.DescriberFn = d.describerFor
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pods, _, _ := cmdtesting.TestData()
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tf := cmdtesting.NewTestFactory().WithNamespace("test")
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defer tf.Cleanup()
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codec := scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Resp: &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, pods)},
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}
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cmd := NewCmdDescribe("kubectl", tf, genericiooptions.NewTestIOStreamsDiscard())
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cmd.Flags().Set("chunk-size", "100")
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cmd.Run(cmd, []string{"pods"})
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if d.Settings.ChunkSize != 100 {
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t.Errorf("ChunkSize = 100 expected, got ChunkSize = %v", d.Settings.ChunkSize)
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}
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}
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func TestDescribeHelpMessage(t *testing.T) {
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tf := cmdtesting.NewTestFactory()
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defer tf.Cleanup()
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streams, _, buf, _ := genericiooptions.NewTestIOStreams()
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cmd := NewCmdDescribe("kubectl", tf, streams)
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cmd.SetArgs([]string{"-h"})
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cmd.SetOut(buf)
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cmd.SetErr(buf)
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_, err := cmd.ExecuteC()
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if err != nil {
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t.Fatalf("Unexpected error: %v", err)
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}
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got := buf.String()
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expected := `describe (-f FILENAME | TYPE [NAME_PREFIX | -l label] | TYPE/NAME)`
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if !strings.Contains(got, expected) {
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t.Errorf("Expected to contain: \n %v\nGot:\n %v\n", expected, got)
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}
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unexpected := `describe (-f FILENAME | TYPE [NAME_PREFIX | -l label] | TYPE/NAME) [flags]`
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if strings.Contains(got, unexpected) {
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t.Errorf("Expected not to contain: \n %v\nGot:\n %v\n", unexpected, got)
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}
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}
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func TestDescribeNoResourcesFound(t *testing.T) {
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testNS := "testns"
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testCases := []struct {
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name string
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flags map[string]string
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namespace string
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expectedOutput string
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expectedErr string
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}{
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{
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name: "all namespaces",
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flags: map[string]string{"all-namespaces": "true"},
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expectedOutput: "",
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expectedErr: "No resources found\n",
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},
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{
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name: "all in namespace",
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namespace: testNS,
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expectedOutput: "",
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expectedErr: "No resources found in " + testNS + " namespace.\n",
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},
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}
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cmdtesting.InitTestErrorHandler(t)
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for _, testCase := range testCases {
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t.Run(testCase.name, func(t *testing.T) {
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pods, _, _ := cmdtesting.EmptyTestData()
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tf := cmdtesting.NewTestFactory().WithNamespace(testNS)
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defer tf.Cleanup()
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codec := scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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tf.UnstructuredClient = &fake.RESTClient{
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NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
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Resp: &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, pods)},
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}
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streams, _, buf, errbuf := genericiooptions.NewTestIOStreams()
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cmd := NewCmdDescribe("kubectl", tf, streams)
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for name, value := range testCase.flags {
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_ = cmd.Flags().Set(name, value)
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}
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cmd.Run(cmd, []string{"pods"})
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if e, a := testCase.expectedOutput, buf.String(); e != a {
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t.Errorf("Unexpected output:\nExpected:\n%v\nActual:\n%v", e, a)
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}
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if e, a := testCase.expectedErr, errbuf.String(); e != a {
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t.Errorf("Unexpected error:\nExpected:\n%v\nActual:\n%v", e, a)
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}
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})
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}
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}
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type testDescriber struct {
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Name, Namespace string
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Settings describe.DescriberSettings
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Output string
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Err error
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}
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func (t *testDescriber) Describe(namespace, name string, describerSettings describe.DescriberSettings) (output string, err error) {
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t.Namespace, t.Name = namespace, name
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t.Settings = describerSettings
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return t.Output, t.Err
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}
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func (t *testDescriber) describerFor(restClientGetter genericclioptions.RESTClientGetter, mapping *meta.RESTMapping) (describe.ResourceDescriber, error) {
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return t, nil
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}
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