mirror of
https://github.com/k3s-io/kubernetes.git
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316 lines
8.0 KiB
Go
316 lines
8.0 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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"errors"
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"fmt"
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"io"
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"strings"
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"testing"
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"time"
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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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"k8s.io/apimachinery/pkg/runtime"
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restclient "k8s.io/client-go/rest"
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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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)
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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 *corev1.Pod
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}{
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{
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name: "v1 - pod 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().WithNamespace("test")
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defer tf.Cleanup()
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streams, _, buf, _ := genericclioptions.NewTestIOStreams()
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mock := &logTestMock{
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logsContent: logContent,
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}
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opts := NewLogsOptions(streams, false)
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opts.Namespace = "test"
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opts.Object = test.pod
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opts.Options = &corev1.PodLogOptions{}
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opts.LogsForObject = mock.mockLogsForObject
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opts.ConsumeRequestFn = mock.mockConsumeRequest
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opts.RunLogs()
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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() *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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}
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}
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func TestValidateLogOptions(t *testing.T) {
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f := cmdtesting.NewTestFactory()
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defer f.Cleanup()
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f.WithNamespace("")
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tests := []struct {
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name string
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args []string
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opts func(genericclioptions.IOStreams) *LogsOptions
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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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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.SinceSeconds = time.Hour
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o.SinceTime = "2006-01-02T15:04:05Z"
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var err error
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o.Options, err = o.ToLogOptions()
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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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return o
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},
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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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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.SinceSeconds = -1 * time.Second
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var err error
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o.Options, err = o.ToLogOptions()
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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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return o
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},
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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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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.LimitBytes = -100
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var err error
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o.Options, err = o.ToLogOptions()
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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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return o
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},
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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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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.Tail = -100
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var err error
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o.Options, err = o.ToLogOptions()
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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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return o
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},
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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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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, true)
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o.Container = "my-container"
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var err error
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o.Options, err = o.ToLogOptions()
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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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return o
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},
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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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name: "container name combined with second argument",
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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.Container = "my-container"
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o.ContainerNameSpecified = true
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var err error
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o.Options, err = o.ToLogOptions()
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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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return o
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},
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args: []string{"my-pod", "my-container"},
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expected: "only one of -c or an inline",
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},
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{
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name: "follow and selector conflict",
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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.Selector = "foo"
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o.Follow = true
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var err error
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o.Options, err = o.ToLogOptions()
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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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return o
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},
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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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streams := genericclioptions.NewTestIOStreamsDiscard()
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o := test.opts(streams)
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o.Resources = test.args
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err := o.Validate()
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if err == nil {
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t.Fatalf("expected error %q, got none", test.expected)
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}
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if !strings.Contains(err.Error(), test.expected) {
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t.Errorf("%s: expected to find:\n\t%s\nfound:\n\t%s\n", test.name, test.expected, err.Error())
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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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opts func(genericclioptions.IOStreams) *LogsOptions
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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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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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return NewLogsOptions(streams, false)
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},
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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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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.Selector = "foo"
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return o
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},
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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: "More than two args case",
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args: []string{"foo", "foo1", "foo2"},
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opts: func(streams genericclioptions.IOStreams) *LogsOptions {
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o := NewLogsOptions(streams, false)
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o.Tail = 1
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return o
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},
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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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for _, test := range tests {
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cmd := NewCmdLogs(f, genericclioptions.NewTestIOStreamsDiscard())
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out := ""
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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 := test.opts(genericclioptions.NewTestIOStreamsDiscard())
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err := o.Complete(f, cmd, test.args)
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if err == nil {
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t.Fatalf("expected error %q, got none", test.expected)
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}
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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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logsContent string
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}
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func (l *logTestMock) mockConsumeRequest(req *restclient.Request, out io.Writer) error {
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fmt.Fprintf(out, l.logsContent)
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return nil
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}
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func (l *logTestMock) mockLogsForObject(restClientGetter genericclioptions.RESTClientGetter, object, options runtime.Object, timeout time.Duration, allContainers bool) ([]*restclient.Request, error) {
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switch object.(type) {
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case *corev1.Pod:
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_, ok := options.(*corev1.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 []*restclient.Request{{}}, 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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