mirror of
https://github.com/k3s-io/kubernetes.git
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259 lines
7.6 KiB
Go
259 lines
7.6 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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"errors"
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"io/ioutil"
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"net/http"
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"strings"
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"testing"
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"time"
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"github.com/spf13/cobra"
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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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/kubernetes/pkg/api/legacyscheme"
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api "k8s.io/kubernetes/pkg/apis/core"
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"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
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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/polymorphichelpers"
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"k8s.io/kubernetes/pkg/kubectl/scheme"
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)
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func TestLog(t *testing.T) {
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tests := []struct {
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name, version, podPath, logPath string
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pod *api.Pod
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}{
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{
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name: "v1 - pod log",
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version: "v1",
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podPath: "/namespaces/test/pods/foo",
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logPath: "/api/v1/namespaces/test/pods/foo/log",
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pod: testPod(),
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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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logContent := "test log content"
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tf := cmdtesting.NewTestFactory()
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defer tf.Cleanup()
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codec := legacyscheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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ns := legacyscheme.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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case p == test.logPath && m == "GET":
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body := ioutil.NopCloser(bytes.NewBufferString(logContent))
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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: %#v\n%#v", test.name, 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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tf.Namespace = "test"
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tf.ClientConfigVal = defaultClientConfig()
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oldLogFn := polymorphichelpers.LogsForObjectFn
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defer func() {
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polymorphichelpers.LogsForObjectFn = oldLogFn
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}()
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clientset, err := tf.ClientSet()
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if err != nil {
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t.Fatal(err)
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}
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polymorphichelpers.LogsForObjectFn = logTestMock{client: clientset}.logsForObject
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streams, _, buf, _ := genericclioptions.NewTestIOStreams()
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cmd := NewCmdLogs(tf, streams)
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cmd.Flags().Set("namespace", "test")
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cmd.Run(cmd, []string{"foo"})
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if buf.String() != logContent {
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t.Errorf("%s: did not get expected log content. Got: %s", test.name, buf.String())
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}
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})
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}
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}
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func testPod() *api.Pod {
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return &api.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "test", ResourceVersion: "10"},
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Spec: api.PodSpec{
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RestartPolicy: api.RestartPolicyAlways,
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DNSPolicy: api.DNSClusterFirst,
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Containers: []api.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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}
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}
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func TestValidateLogFlags(t *testing.T) {
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f := cmdtesting.NewTestFactory()
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defer f.Cleanup()
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tests := []struct {
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name string
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flags map[string]string
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args []string
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expected string
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}{
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{
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name: "since & since-time",
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flags: map[string]string{"since": "1h", "since-time": "2006-01-02T15:04:05Z"},
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args: []string{"foo"},
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expected: "at most one of `sinceTime` or `sinceSeconds` may be specified",
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},
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{
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name: "negative since-time",
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flags: map[string]string{"since": "-1s"},
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args: []string{"foo"},
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expected: "must be greater than 0",
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},
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{
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name: "negative limit-bytes",
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flags: map[string]string{"limit-bytes": "-100"},
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args: []string{"foo"},
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expected: "must be greater than 0",
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},
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{
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name: "negative tail",
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flags: map[string]string{"tail": "-100"},
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args: []string{"foo"},
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expected: "must be greater than or equal to 0",
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},
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{
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name: "container name combined with --all-containers",
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flags: map[string]string{"all-containers": "true"},
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args: []string{"my-pod", "my-container"},
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expected: "--all-containers=true should not be specified with container",
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},
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}
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for _, test := range tests {
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streams := genericclioptions.NewTestIOStreamsDiscard()
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cmd := NewCmdLogs(f, streams)
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out := ""
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for flag, value := range test.flags {
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cmd.Flags().Set(flag, value)
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}
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// checkErr breaks tests in case of errors, plus we just
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// need to check errors returned by the command validation
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o := NewLogsOptions(streams, test.flags["all-containers"] == "true")
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cmd.Run = func(cmd *cobra.Command, args []string) {
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o.Complete(f, cmd, args)
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out = o.Validate().Error()
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}
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cmd.Run(cmd, test.args)
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if !strings.Contains(out, test.expected) {
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t.Errorf("%s: expected to find:\n\t%s\nfound:\n\t%s\n", test.name, test.expected, out)
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}
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}
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}
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func TestLogComplete(t *testing.T) {
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f := cmdtesting.NewTestFactory()
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defer f.Cleanup()
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tests := []struct {
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name string
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args []string
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flags map[string]string
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expected string
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}{
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{
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name: "No args case",
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flags: map[string]string{"selector": ""},
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expected: "'logs (POD | TYPE/NAME) [CONTAINER_NAME]'.\nPOD or TYPE/NAME is a required argument for the logs command",
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},
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{
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name: "One args case",
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args: []string{"foo"},
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flags: map[string]string{"selector": "foo"},
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expected: "only a selector (-l) or a POD name is allowed",
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},
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{
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name: "Two args case",
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args: []string{"foo", "foo1"},
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flags: map[string]string{"container": "foo1"},
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expected: "only one of -c or an inline [CONTAINER] arg is allowed",
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},
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{
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name: "More than two args case",
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args: []string{"foo", "foo1", "foo2"},
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flags: map[string]string{"tail": "1"},
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expected: "'logs (POD | TYPE/NAME) [CONTAINER_NAME]'.\nPOD or TYPE/NAME is a required argument for the logs command",
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},
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{
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name: "follow and selecter conflict",
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flags: map[string]string{"selector": "foo", "follow": "true"},
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expected: "only one of follow (-f) or selector (-l) is allowed",
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},
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}
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for _, test := range tests {
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cmd := NewCmdLogs(f, genericclioptions.NewTestIOStreamsDiscard())
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var err error
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out := ""
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for flag, value := range test.flags {
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cmd.Flags().Set(flag, value)
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}
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// checkErr breaks tests in case of errors, plus we just
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// need to check errors returned by the command validation
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o := NewLogsOptions(genericclioptions.NewTestIOStreamsDiscard(), false)
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err = o.Complete(f, cmd, test.args)
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out = err.Error()
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if !strings.Contains(out, test.expected) {
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t.Errorf("%s: expected to find:\n\t%s\nfound:\n\t%s\n", test.name, test.expected, out)
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}
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}
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}
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type logTestMock struct {
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client internalclientset.Interface
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}
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func (m logTestMock) logsForObject(restClientGetter genericclioptions.RESTClientGetter, object, options runtime.Object, timeout time.Duration) (*restclient.Request, error) {
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switch t := object.(type) {
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case *api.Pod:
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opts, ok := options.(*api.PodLogOptions)
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if !ok {
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return nil, errors.New("provided options object is not a PodLogOptions")
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}
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return m.client.Core().Pods(t.Namespace).GetLogs(t.Name, opts), nil
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default:
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return nil, fmt.Errorf("cannot get the logs from %T", object)
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}
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}
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