mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-11-01 02:38:12 +00:00
322 lines
9.6 KiB
Go
322 lines
9.6 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 main
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import (
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"bytes"
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"errors"
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"fmt"
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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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"github.com/stretchr/testify/assert"
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"k8s.io/apimachinery/pkg/util/wait"
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)
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type result struct {
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err error
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output string
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}
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func testServer(n string) *Server {
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return &Server{
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SimpleUsage: n,
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Long: fmt.Sprintf("A simple server named %s", n),
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Run: func(s *Server, args []string, stopCh <-chan struct{}) error {
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s.hk.Printf("%s Run\n", s.Name())
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return nil
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},
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}
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}
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func testServerError(n string) *Server {
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return &Server{
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SimpleUsage: n,
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Long: fmt.Sprintf("A simple server named %s that returns an error", n),
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Run: func(s *Server, args []string, stopCh <-chan struct{}) error {
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s.hk.Printf("%s Run\n", s.Name())
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return errors.New("server returning error")
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},
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}
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}
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func testStopChRespectingServer(n string) *Server {
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return &Server{
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SimpleUsage: n,
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Long: fmt.Sprintf("A simple server named %s", n),
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Run: func(s *Server, args []string, stopCh <-chan struct{}) error {
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s.hk.Printf("%s Run\n", s.Name())
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<-stopCh
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return nil
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},
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RespectsStopCh: true,
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}
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}
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func testStopChIgnoringServer(n string) *Server {
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return &Server{
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SimpleUsage: n,
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Long: fmt.Sprintf("A simple server named %s", n),
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Run: func(s *Server, args []string, stopCh <-chan struct{}) error {
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<-wait.NeverStop // this leaks obviously, but we don't care about one go routine more or less in test
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return nil
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},
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RespectsStopCh: false,
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}
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}
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func testStopChRespectingServerWithError(n string) *Server {
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return &Server{
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SimpleUsage: n,
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Long: fmt.Sprintf("A simple server named %s", n),
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Run: func(s *Server, args []string, stopCh <-chan struct{}) error {
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s.hk.Printf("%s Run\n", s.Name())
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<-stopCh
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return errors.New("server returning error")
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},
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RespectsStopCh: true,
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}
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}
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const defaultCobraMessage = "default message from cobra command"
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const defaultCobraSubMessage = "default sub-message from cobra command"
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const cobraMessageDesc = "message to print"
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const cobraSubMessageDesc = "sub-message to print"
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func testCobraCommand(n string) *Server {
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var cobraServer *Server
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var msg string
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cmd := &cobra.Command{
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Use: n,
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Long: n,
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Short: n,
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Run: func(cmd *cobra.Command, args []string) {
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cobraServer.hk.Printf("msg: %s\n", msg)
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},
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}
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cmd.PersistentFlags().StringVar(&msg, "msg", defaultCobraMessage, cobraMessageDesc)
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var subMsg string
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subCmdName := "subcommand"
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subCmd := &cobra.Command{
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Use: subCmdName,
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Long: subCmdName,
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Short: subCmdName,
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Run: func(cmd *cobra.Command, args []string) {
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cobraServer.hk.Printf("submsg: %s", subMsg)
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},
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}
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subCmd.PersistentFlags().StringVar(&subMsg, "submsg", defaultCobraSubMessage, cobraSubMessageDesc)
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cmd.AddCommand(subCmd)
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localFlags := cmd.LocalFlags()
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localFlags.SetInterspersed(false)
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s := &Server{
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SimpleUsage: n,
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Long: fmt.Sprintf("A server named %s which uses a cobra command", n),
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Run: func(s *Server, args []string, stopCh <-chan struct{}) error {
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cobraServer = s
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cmd.SetOutput(s.hk.Out())
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cmd.SetArgs(args)
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return cmd.Execute()
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},
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flags: localFlags,
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}
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return s
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}
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func runFull(t *testing.T, args string, stopCh <-chan struct{}) *result {
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buf := new(bytes.Buffer)
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hk := HyperKube{
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Name: "hyperkube",
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Long: "hyperkube is an all-in-one server binary.",
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}
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hk.SetOut(buf)
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hk.AddServer(testServer("test1"))
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hk.AddServer(testServer("test2"))
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hk.AddServer(testServer("test3"))
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hk.AddServer(testServerError("test-error"))
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hk.AddServer(testStopChIgnoringServer("test-stop-ch-ignoring"))
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hk.AddServer(testStopChRespectingServer("test-stop-ch-respecting"))
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hk.AddServer(testStopChRespectingServerWithError("test-error-stop-ch-respecting"))
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hk.AddServer(testCobraCommand("test-cobra-command"))
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a := strings.Split(args, " ")
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t.Logf("Running full with args: %q", a)
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err := hk.Run(a, stopCh)
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r := &result{err, buf.String()}
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t.Logf("Result err: %v, output: %q", r.err, r.output)
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return r
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}
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func TestRun(t *testing.T) {
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x := runFull(t, "hyperkube test1", wait.NeverStop)
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assert.Contains(t, x.output, "test1 Run")
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assert.NoError(t, x.err)
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}
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func TestLinkRun(t *testing.T) {
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x := runFull(t, "test1", wait.NeverStop)
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assert.Contains(t, x.output, "test1 Run")
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assert.NoError(t, x.err)
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}
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func TestTopNoArgs(t *testing.T) {
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x := runFull(t, "hyperkube", wait.NeverStop)
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assert.EqualError(t, x.err, "no server specified")
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}
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func TestBadServer(t *testing.T) {
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x := runFull(t, "hyperkube bad-server", wait.NeverStop)
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assert.EqualError(t, x.err, "Server not found: bad-server")
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assert.Contains(t, x.output, "Usage")
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}
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func TestTopHelp(t *testing.T) {
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x := runFull(t, "hyperkube --help", wait.NeverStop)
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assert.NoError(t, x.err)
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assert.Contains(t, x.output, "all-in-one")
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assert.Contains(t, x.output, "A simple server named test1")
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}
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func TestTopFlags(t *testing.T) {
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x := runFull(t, "hyperkube --help test1", wait.NeverStop)
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assert.NoError(t, x.err)
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assert.Contains(t, x.output, "all-in-one")
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assert.Contains(t, x.output, "A simple server named test1")
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assert.NotContains(t, x.output, "test1 Run")
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}
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func TestTopFlagsBad(t *testing.T) {
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x := runFull(t, "hyperkube --bad-flag", wait.NeverStop)
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assert.EqualError(t, x.err, "unknown flag: --bad-flag")
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assert.Contains(t, x.output, "all-in-one")
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assert.Contains(t, x.output, "A simple server named test1")
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}
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func TestServerHelp(t *testing.T) {
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x := runFull(t, "hyperkube test1 --help", wait.NeverStop)
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assert.NoError(t, x.err)
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assert.Contains(t, x.output, "A simple server named test1")
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assert.Contains(t, x.output, "-h, --help")
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assert.Contains(t, x.output, "help for hyperkube")
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assert.NotContains(t, x.output, "test1 Run")
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}
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func TestServerFlagsBad(t *testing.T) {
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x := runFull(t, "hyperkube test1 --bad-flag", wait.NeverStop)
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assert.EqualError(t, x.err, "unknown flag: --bad-flag")
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assert.Contains(t, x.output, "A simple server named test1")
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assert.Contains(t, x.output, "-h, --help")
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assert.Contains(t, x.output, "help for hyperkube")
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assert.NotContains(t, x.output, "test1 Run")
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}
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func TestServerError(t *testing.T) {
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x := runFull(t, "hyperkube test-error", wait.NeverStop)
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assert.Contains(t, x.output, "test-error Run")
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assert.EqualError(t, x.err, "server returning error")
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}
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func TestStopChIgnoringServer(t *testing.T) {
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stopCh := make(chan struct{})
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returnedCh := make(chan struct{})
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var x *result
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go func() {
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defer close(returnedCh)
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x = runFull(t, "hyperkube test-stop-ch-ignoring", stopCh)
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}()
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close(stopCh)
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select {
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case <-time.After(wait.ForeverTestTimeout):
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t.Fatalf("%q never returned after stopCh was closed", "hyperkube test-stop-ch-ignoring")
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case <-returnedCh:
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}
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// we cannot be sure that the server had a chance to output anything
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// assert.Contains(t, x.output, "test-error-stop-ch-ignoring Run")
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assert.EqualError(t, x.err, "interrupted")
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}
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func TestStopChRespectingServer(t *testing.T) {
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stopCh := make(chan struct{})
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returnedCh := make(chan struct{})
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var x *result
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go func() {
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defer close(returnedCh)
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x = runFull(t, "hyperkube test-stop-ch-respecting", stopCh)
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}()
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close(stopCh)
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select {
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case <-time.After(wait.ForeverTestTimeout):
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t.Fatalf("%q never returned after stopCh was closed", "hyperkube test-stop-ch-respecting")
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case <-returnedCh:
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}
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assert.Contains(t, x.output, "test-stop-ch-respecting Run")
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assert.Nil(t, x.err)
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}
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func TestStopChRespectingServerWithError(t *testing.T) {
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stopCh := make(chan struct{})
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returnedCh := make(chan struct{})
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var x *result
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go func() {
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defer close(returnedCh)
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x = runFull(t, "hyperkube test-error-stop-ch-respecting", stopCh)
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}()
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close(stopCh)
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select {
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case <-time.After(wait.ForeverTestTimeout):
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t.Fatalf("%q never returned after stopCh was closed", "hyperkube test-error-stop-ch-respecting")
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case <-returnedCh:
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}
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assert.Contains(t, x.output, "test-error-stop-ch-respecting Run")
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assert.EqualError(t, x.err, "server returning error")
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}
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func TestCobraCommandHelp(t *testing.T) {
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x := runFull(t, "hyperkube test-cobra-command --help", wait.NeverStop)
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assert.NoError(t, x.err)
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assert.Contains(t, x.output, "A server named test-cobra-command which uses a cobra command")
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assert.Contains(t, x.output, cobraMessageDesc)
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}
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func TestCobraCommandDefaultMessage(t *testing.T) {
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x := runFull(t, "hyperkube test-cobra-command", wait.NeverStop)
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assert.Contains(t, x.output, fmt.Sprintf("msg: %s", defaultCobraMessage))
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}
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func TestCobraCommandMessage(t *testing.T) {
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x := runFull(t, "hyperkube test-cobra-command --msg foobar", wait.NeverStop)
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assert.Contains(t, x.output, "msg: foobar")
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}
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func TestCobraSubCommandHelp(t *testing.T) {
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x := runFull(t, "hyperkube test-cobra-command subcommand --help", wait.NeverStop)
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assert.NoError(t, x.err)
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assert.Contains(t, x.output, cobraSubMessageDesc)
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}
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func TestCobraSubCommandDefaultMessage(t *testing.T) {
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x := runFull(t, "hyperkube test-cobra-command subcommand", wait.NeverStop)
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assert.Contains(t, x.output, fmt.Sprintf("submsg: %s", defaultCobraSubMessage))
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}
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func TestCobraSubCommandMessage(t *testing.T) {
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x := runFull(t, "hyperkube test-cobra-command subcommand --submsg foobar", wait.NeverStop)
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assert.Contains(t, x.output, "submsg: foobar")
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}
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