mirror of
https://github.com/k3s-io/kubernetes.git
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390 lines
10 KiB
Go
390 lines
10 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 cmd
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import (
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"reflect"
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"strings"
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"testing"
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"github.com/spf13/cobra"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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restclient "k8s.io/client-go/rest"
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"k8s.io/client-go/rest/fake"
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"k8s.io/client-go/tools/remotecommand"
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cmdtesting "k8s.io/kubernetes/pkg/kubectl/cmd/testing"
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"k8s.io/kubernetes/pkg/kubectl/genericclioptions"
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"k8s.io/kubernetes/pkg/kubectl/scheme"
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"k8s.io/kubernetes/pkg/kubectl/util/term"
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)
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type fakeRemoteExecutor struct {
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method string
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url *url.URL
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execErr error
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}
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func (f *fakeRemoteExecutor) Execute(method string, url *url.URL, config *restclient.Config, stdin io.Reader, stdout, stderr io.Writer, tty bool, terminalSizeQueue remotecommand.TerminalSizeQueue) error {
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f.method = method
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f.url = url
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return f.execErr
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}
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func TestPodAndContainer(t *testing.T) {
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tests := []struct {
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args []string
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argsLenAtDash int
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p *ExecOptions
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name string
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expectError bool
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expectedPod string
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expectedContainer string
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expectedArgs []string
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}{
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{
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p: &ExecOptions{},
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argsLenAtDash: -1,
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expectError: true,
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name: "empty",
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},
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{
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p: &ExecOptions{StreamOptions: StreamOptions{PodName: "foo"}},
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argsLenAtDash: -1,
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expectError: true,
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name: "no cmd",
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},
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{
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p: &ExecOptions{StreamOptions: StreamOptions{PodName: "foo", ContainerName: "bar"}},
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argsLenAtDash: -1,
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expectError: true,
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name: "no cmd, w/ container",
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},
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{
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p: &ExecOptions{StreamOptions: StreamOptions{PodName: "foo"}},
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args: []string{"cmd"},
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argsLenAtDash: -1,
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expectedPod: "foo",
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expectedArgs: []string{"cmd"},
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name: "pod in flags",
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},
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{
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p: &ExecOptions{},
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args: []string{"foo", "cmd"},
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argsLenAtDash: 0,
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expectError: true,
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name: "no pod, pod name is behind dash",
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},
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{
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p: &ExecOptions{},
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args: []string{"foo"},
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argsLenAtDash: -1,
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expectError: true,
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name: "no cmd, w/o flags",
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},
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{
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p: &ExecOptions{},
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args: []string{"foo", "cmd"},
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argsLenAtDash: -1,
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expectedPod: "foo",
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expectedArgs: []string{"cmd"},
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name: "cmd, w/o flags",
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},
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{
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p: &ExecOptions{},
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args: []string{"foo", "cmd"},
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argsLenAtDash: 1,
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expectedPod: "foo",
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expectedArgs: []string{"cmd"},
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name: "cmd, cmd is behind dash",
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},
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{
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p: &ExecOptions{StreamOptions: StreamOptions{ContainerName: "bar"}},
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args: []string{"foo", "cmd"},
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argsLenAtDash: -1,
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expectedPod: "foo",
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expectedContainer: "bar",
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expectedArgs: []string{"cmd"},
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name: "cmd, container in flag",
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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tf := cmdtesting.NewTestFactory().WithNamespace("test")
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defer tf.Cleanup()
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ns := scheme.Codecs
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tf.Client = &fake.RESTClient{
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NegotiatedSerializer: ns,
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Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) { return nil, nil }),
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}
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tf.ClientConfigVal = defaultClientConfig()
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cmd := &cobra.Command{}
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options := test.p
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options.ErrOut = bytes.NewBuffer([]byte{})
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err := options.Complete(tf, cmd, test.args, test.argsLenAtDash)
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if test.expectError && err == nil {
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t.Errorf("%s: unexpected non-error", test.name)
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}
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if !test.expectError && err != nil {
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t.Errorf("%s: unexpected error: %v", test.name, err)
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}
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if err != nil {
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return
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}
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if options.PodName != test.expectedPod {
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t.Errorf("%s: expected: %s, got: %s", test.name, test.expectedPod, options.PodName)
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}
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if options.ContainerName != test.expectedContainer {
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t.Errorf("%s: expected: %s, got: %s", test.name, test.expectedContainer, options.ContainerName)
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}
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if !reflect.DeepEqual(test.expectedArgs, options.Command) {
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t.Errorf("%s: expected: %v, got %v", test.name, test.expectedArgs, options.Command)
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}
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})
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}
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}
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func TestExec(t *testing.T) {
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version := "v1"
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tests := []struct {
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name, podPath, execPath string
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pod *corev1.Pod
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execErr bool
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}{
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{
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name: "pod exec",
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podPath: "/api/" + version + "/namespaces/test/pods/foo",
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execPath: "/api/" + version + "/namespaces/test/pods/foo/exec",
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pod: execPod(),
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},
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{
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name: "pod exec error",
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podPath: "/api/" + version + "/namespaces/test/pods/foo",
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execPath: "/api/" + version + "/namespaces/test/pods/foo/exec",
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pod: execPod(),
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execErr: true,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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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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ns := scheme.Codecs
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tf.Client = &fake.RESTClient{
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NegotiatedSerializer: ns,
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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 == test.podPath && m == "GET":
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body := objBody(codec, test.pod)
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return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: body}, nil
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default:
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t.Errorf("%s: unexpected request: %s %#v\n%#v", test.name, req.Method, req.URL, req)
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return nil, fmt.Errorf("unexpected request")
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}
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}),
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}
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tf.ClientConfigVal = defaultClientConfig()
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ex := &fakeRemoteExecutor{}
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if test.execErr {
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ex.execErr = fmt.Errorf("exec error")
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}
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params := &ExecOptions{
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StreamOptions: StreamOptions{
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PodName: "foo",
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ContainerName: "bar",
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IOStreams: genericclioptions.NewTestIOStreamsDiscard(),
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},
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Executor: ex,
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}
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cmd := &cobra.Command{}
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args := []string{"test", "command"}
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if err := params.Complete(tf, cmd, args, -1); err != nil {
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t.Fatal(err)
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}
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err := params.Run()
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if test.execErr && err != ex.execErr {
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t.Errorf("%s: Unexpected exec error: %v", test.name, err)
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return
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}
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if !test.execErr && err != nil {
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t.Errorf("%s: Unexpected error: %v", test.name, err)
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return
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}
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if test.execErr {
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return
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}
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if ex.url.Path != test.execPath {
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t.Errorf("%s: Did not get expected path for exec request", test.name)
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return
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}
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if ex.method != "POST" {
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t.Errorf("%s: Did not get method for exec request: %s", test.name, ex.method)
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}
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})
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}
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}
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func execPod() *corev1.Pod {
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return &corev1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "test", ResourceVersion: "10"},
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Spec: corev1.PodSpec{
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RestartPolicy: corev1.RestartPolicyAlways,
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DNSPolicy: corev1.DNSClusterFirst,
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Containers: []corev1.Container{
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{
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Name: "bar",
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},
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},
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},
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Status: corev1.PodStatus{
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Phase: corev1.PodRunning,
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},
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}
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}
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func TestSetupTTY(t *testing.T) {
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streams, _, _, stderr := genericclioptions.NewTestIOStreams()
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// test 1 - don't attach stdin
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o := &StreamOptions{
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// InterruptParent: ,
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Stdin: false,
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IOStreams: streams,
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TTY: true,
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}
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tty := o.setupTTY()
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if o.In != nil {
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t.Errorf("don't attach stdin: o.In should be nil")
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}
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if tty.In != nil {
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t.Errorf("don't attach stdin: tty.In should be nil")
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}
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if o.TTY {
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t.Errorf("don't attach stdin: o.TTY should be false")
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}
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if tty.Raw {
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t.Errorf("don't attach stdin: tty.Raw should be false")
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}
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if len(stderr.String()) > 0 {
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t.Errorf("don't attach stdin: stderr wasn't empty: %s", stderr.String())
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}
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// tests from here on attach stdin
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// test 2 - don't request a TTY
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o.Stdin = true
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o.In = &bytes.Buffer{}
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o.TTY = false
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tty = o.setupTTY()
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if o.In == nil {
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t.Errorf("attach stdin, no TTY: o.In should not be nil")
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}
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if tty.In != o.In {
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t.Errorf("attach stdin, no TTY: tty.In should equal o.In")
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}
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if o.TTY {
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t.Errorf("attach stdin, no TTY: o.TTY should be false")
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}
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if tty.Raw {
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t.Errorf("attach stdin, no TTY: tty.Raw should be false")
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}
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if len(stderr.String()) > 0 {
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t.Errorf("attach stdin, no TTY: stderr wasn't empty: %s", stderr.String())
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}
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// test 3 - request a TTY, but stdin is not a terminal
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o.Stdin = true
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o.In = &bytes.Buffer{}
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o.ErrOut = stderr
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o.TTY = true
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tty = o.setupTTY()
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if o.In == nil {
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t.Errorf("attach stdin, TTY, not a terminal: o.In should not be nil")
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}
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if tty.In != o.In {
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t.Errorf("attach stdin, TTY, not a terminal: tty.In should equal o.In")
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}
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if o.TTY {
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t.Errorf("attach stdin, TTY, not a terminal: o.TTY should be false")
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}
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if tty.Raw {
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t.Errorf("attach stdin, TTY, not a terminal: tty.Raw should be false")
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}
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if !strings.Contains(stderr.String(), "input is not a terminal") {
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t.Errorf("attach stdin, TTY, not a terminal: expected 'input is not a terminal' to stderr")
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}
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// test 4 - request a TTY, stdin is a terminal
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o.Stdin = true
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o.In = &bytes.Buffer{}
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stderr.Reset()
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o.TTY = true
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overrideStdin := ioutil.NopCloser(&bytes.Buffer{})
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overrideStdout := &bytes.Buffer{}
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overrideStderr := &bytes.Buffer{}
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o.overrideStreams = func() (io.ReadCloser, io.Writer, io.Writer) {
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return overrideStdin, overrideStdout, overrideStderr
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}
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o.isTerminalIn = func(tty term.TTY) bool {
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return true
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}
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tty = o.setupTTY()
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if o.In != overrideStdin {
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t.Errorf("attach stdin, TTY, is a terminal: o.In should equal overrideStdin")
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}
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if tty.In != o.In {
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t.Errorf("attach stdin, TTY, is a terminal: tty.In should equal o.In")
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}
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if !o.TTY {
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t.Errorf("attach stdin, TTY, is a terminal: o.TTY should be true")
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}
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if !tty.Raw {
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t.Errorf("attach stdin, TTY, is a terminal: tty.Raw should be true")
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}
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if len(stderr.String()) > 0 {
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t.Errorf("attach stdin, TTY, is a terminal: stderr wasn't empty: %s", stderr.String())
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}
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if o.Out != overrideStdout {
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t.Errorf("attach stdin, TTY, is a terminal: o.Out should equal overrideStdout")
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}
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if tty.Out != o.Out {
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t.Errorf("attach stdin, TTY, is a terminal: tty.Out should equal o.Out")
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}
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}
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