diff --git a/pkg/kubectl/cmd/config/BUILD b/pkg/kubectl/cmd/config/BUILD index 829219d6ea7..ad09c4ad7d7 100644 --- a/pkg/kubectl/cmd/config/BUILD +++ b/pkg/kubectl/cmd/config/BUILD @@ -57,6 +57,7 @@ go_test( "get_contexts_test.go", "navigation_step_parser_test.go", "unset_test.go", + "use_context_test.go", ], library = ":go_default_library", tags = ["automanaged"], diff --git a/pkg/kubectl/cmd/config/use_context_test.go b/pkg/kubectl/cmd/config/use_context_test.go new file mode 100644 index 00000000000..74424bc51b9 --- /dev/null +++ b/pkg/kubectl/cmd/config/use_context_test.go @@ -0,0 +1,104 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package config + +import ( + "bytes" + "io/ioutil" + "os" + "testing" + + "k8s.io/client-go/tools/clientcmd" + clientcmdapi "k8s.io/client-go/tools/clientcmd/api" +) + +type useContextTest struct { + description string + config clientcmdapi.Config //initiate kubectl config + args []string //kubectl config use-context args + expected string //expect out + expectedConfig clientcmdapi.Config //expect kubectl config +} + +func TestUseContext(t *testing.T) { + conf := clientcmdapi.Config{ + Kind: "Config", + APIVersion: "v1", + Clusters: map[string]*clientcmdapi.Cluster{ + "minikube": {Server: "https://192.168.99.100:8443"}, + "my-cluster": {Server: "https://192.168.0.1:3434"}, + }, + Contexts: map[string]*clientcmdapi.Context{ + "minikube": {AuthInfo: "minikube", Cluster: "minikube"}, + "my-cluster": {AuthInfo: "mu-cluster", Cluster: "my-cluster"}, + }, + CurrentContext: "minikube", + } + test := useContextTest{ + description: "Testing for kubectl config use-context", + config: conf, + args: []string{"my-cluster"}, + expected: `Switched to context "my-cluster".` + "\n", + expectedConfig: clientcmdapi.Config{ + Kind: "Config", + APIVersion: "v1", + Clusters: map[string]*clientcmdapi.Cluster{ + "minikube": {Server: "https://192.168.99.100:8443"}, + "my-cluster": {Server: "https://192.168.0.1:3434"}, + }, + Contexts: map[string]*clientcmdapi.Context{ + "minikube": {AuthInfo: "minikube", Cluster: "minikube"}, + "my-cluster": {AuthInfo: "mu-cluster", Cluster: "my-cluster"}, + }, + CurrentContext: "my-cluster", + }, + } + test.run(t) +} + +func (test useContextTest) run(t *testing.T) { + fakeKubeFile, err := ioutil.TempFile(os.TempDir(), "") + if err != nil { + t.Fatalf("unexpected error: %v", err) + } + defer os.Remove(fakeKubeFile.Name()) + err = clientcmd.WriteToFile(test.config, fakeKubeFile.Name()) + if err != nil { + t.Fatalf("unexpected error: %v", err) + } + pathOptions := clientcmd.NewDefaultPathOptions() + pathOptions.GlobalFile = fakeKubeFile.Name() + pathOptions.EnvVar = "" + buf := bytes.NewBuffer([]byte{}) + cmd := NewCmdConfigUseContext(buf, pathOptions) + cmd.SetArgs(test.args) + if err := cmd.Execute(); err != nil { + t.Fatalf("unexpected error executing command: %v,kubectl config use-context args: %v", err, test.args) + } + config, err := clientcmd.LoadFromFile(fakeKubeFile.Name()) + if err != nil { + t.Fatalf("unexpected error loading kubeconfig file: %v", err) + } + if len(test.expected) != 0 { + if buf.String() != test.expected { + t.Errorf("Failed in :%q\n expected %v\n, but got %v\n", test.description, test.expected, buf.String()) + } + } + if test.expectedConfig.CurrentContext != config.CurrentContext { + t.Errorf("Failed in :%q\n expected config %v, but found %v\n in kubeconfig\n", test.description, test.expectedConfig, config) + } +}