How to use StderrPipe method of mocks Package

Best Syzkaller code snippet using mocks.StderrPipe

shell_test.go

Source:shell_test.go

1// Copyright 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.2//3// Licensed under the Apache License, Version 2.0 (the "License"). You may not4// use this file except in compliance with the License. A copy of the5// License is located at6//7// http://aws.amazon.com/apache2.0/8//9// or in the "license" file accompanying this file. This file is distributed10// on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,11// either express or implied. See the License for the specific language governing12// permissions and limitations under the License.13// Package shell implements session shell plugin.14package shell15import (16	"os"17	"strings"18	"testing"19	"time"20	cloudwatchlogspublisher_mock "github.com/aws/amazon-ssm-agent/agent/agentlogstocloudwatch/cloudwatchlogspublisher/mock"21	"github.com/aws/amazon-ssm-agent/agent/appconfig"22	"github.com/aws/amazon-ssm-agent/agent/context"23	"github.com/aws/amazon-ssm-agent/agent/contracts"24	iohandlermocks "github.com/aws/amazon-ssm-agent/agent/framework/processor/executer/iohandler/mock"25	"github.com/aws/amazon-ssm-agent/agent/log"26	"github.com/aws/amazon-ssm-agent/agent/s3util"27	mgsContracts "github.com/aws/amazon-ssm-agent/agent/session/contracts"28	dataChannelMock "github.com/aws/amazon-ssm-agent/agent/session/datachannel/mocks"29	execcmdMock "github.com/aws/amazon-ssm-agent/agent/session/shell/execcmd/mocks"30	"github.com/aws/amazon-ssm-agent/agent/task"31	"github.com/aws/aws-sdk-go/service/cloudwatchlogs"32	"github.com/stretchr/testify/assert"33	"github.com/stretchr/testify/mock"34	"github.com/stretchr/testify/suite"35)36var (37	payload            = []byte("testPayload")38	messageId          = "dd01e56b-ff48-483e-a508-b5f073f31b16"39	schemaVersion      = uint32(1)40	createdDate        = uint64(1503434274948)41	mockLog            = log.NewMockLog()42	sessionId          = "sessionId"43	sessionOwner       = "sessionOwner"44	testCwLogGroupName = "testCW"45	testCwlLogGroup    = cloudwatchlogs.LogGroup{46		LogGroupName: &testCwLogGroupName,47	}48)49type ShellTestSuite struct {50	suite.Suite51	mockContext     *context.Mock52	mockLog         log.T53	mockCancelFlag  *task.MockCancelFlag54	mockDataChannel *dataChannelMock.IDataChannel55	mockIohandler   *iohandlermocks.MockIOHandler56	mockCWL         *cloudwatchlogspublisher_mock.CloudWatchLogsServiceMock57	mockS3          *s3util.MockS3Uploader58	stdin           *os.File59	stdout          *os.File60	mockCmd         *execcmdMock.IExecCmd61	plugin          *ShellPlugin62}63func (suite *ShellTestSuite) SetupTest() {64	mockContext := context.NewMockDefault()65	mockCancelFlag := &task.MockCancelFlag{}66	mockDataChannel := &dataChannelMock.IDataChannel{}67	mockCWL := new(cloudwatchlogspublisher_mock.CloudWatchLogsServiceMock)68	mockS3 := new(s3util.MockS3Uploader)69	mockIohandler := new(iohandlermocks.MockIOHandler)70	mockCmd := &execcmdMock.IExecCmd{}71	suite.mockContext = mockContext72	suite.mockCancelFlag = mockCancelFlag73	suite.mockLog = mockLog74	suite.mockDataChannel = mockDataChannel75	suite.mockIohandler = mockIohandler76	suite.mockCWL = mockCWL77	suite.mockS3 = mockS378	suite.mockCmd = mockCmd79	stdout, stdin, _ := os.Pipe()80	suite.stdin = stdin81	suite.stdout = stdout82	suite.plugin = &ShellPlugin{83		stdin:       stdin,84		stdout:      stdout,85		dataChannel: mockDataChannel,86		context:     mockContext,87		logger: logger{88			cwl:                         mockCWL,89			s3Util:                      mockS3,90			ptyTerminated:               make(chan bool),91			cloudWatchStreamingFinished: make(chan bool),92		},93	}94}95func (suite *ShellTestSuite) TearDownTest() {96	suite.stdin.Close()97	suite.stdout.Close()98}99// Execute the test suite100func TestShellTestSuite(t *testing.T) {101	suite.Run(t, new(ShellTestSuite))102}103// Testing validPrefix104func (suite *ShellTestSuite) TestValidPrefix() {105	plugin := &ShellPlugin{}106	suite.True(plugin.validPrefix("STD_OUT:\r\n"))107	suite.True(plugin.validPrefix("stderr:"))108	suite.True(plugin.validPrefix("STD_OUT\n123"))109	suite.True(plugin.validPrefix("std-OUT:"))110	suite.False(plugin.validPrefix("std@OUT:"))111	suite.False(plugin.validPrefix("stdOUT!\t"))112	suite.False(plugin.validPrefix("(stdOUT1)"))113	suite.False(plugin.validPrefix("abcabcabcabcabcabcabcabcabcabcabcabcabc:"))114}115// Testing setSeparateOutputStreamProperties for NonInteractiveCommands plugin116func (suite *ShellTestSuite) TestSetSeparateOutputStreamProperties() {117	plugin := &ShellPlugin{118		context:     suite.mockContext,119		name:        appconfig.PluginNameNonInteractiveCommands,120		dataChannel: suite.mockDataChannel,121		execCmd:     suite.mockCmd,122	}123	shellConfig := mgsContracts.ShellConfig{124		"ls", false, "true", "STD_OUT:\n", "STD_ERR:\n"}125	shellProperties := mgsContracts.ShellProperties{shellConfig, shellConfig, shellConfig}126	plugin.setSeparateOutputStreamProperties(shellProperties)127	assert.True(suite.T(), plugin.separateOutput)128	assert.Equal(suite.T(), plugin.stdoutPrefix, "STD_OUT:\n")129	assert.Equal(suite.T(), plugin.stderrPrefix, "STD_ERR:\n")130}131// Testing setSeparateOutputStreamProperties with invalid separateOutPutStream132func (suite *ShellTestSuite) TestSetSeparateOutputStreamPropertiesWithInvalidSeparateOutPutStream() {133	plugin := &ShellPlugin{134		context:     suite.mockContext,135		name:        appconfig.PluginNameNonInteractiveCommands,136		dataChannel: suite.mockDataChannel,137		execCmd:     suite.mockCmd,138	}139	shellConfig := mgsContracts.ShellConfig{140		"ls", false, "error", "STD_OUT:\n", "STD$ERR:\n"}141	shellProperties := mgsContracts.ShellProperties{shellConfig, shellConfig, shellConfig}142	err := plugin.setSeparateOutputStreamProperties(shellProperties)143	suite.True(strings.Contains(err.Error(), "fail to get separateOutPutStream property"))144}145// Testing setSeparateOutputStreamProperties with invalid stdout prefix146func (suite *ShellTestSuite) TestSetSeparateOutputStreamPropertiesWithInvalidStdoutPrefix() {147	plugin := &ShellPlugin{148		context:     suite.mockContext,149		name:        appconfig.PluginNameNonInteractiveCommands,150		dataChannel: suite.mockDataChannel,151		execCmd:     suite.mockCmd,152	}153	shellConfig := mgsContracts.ShellConfig{154		"ls", false, "true", "STD@OUT:\n", "STD_ERR:\n"}155	shellProperties := mgsContracts.ShellProperties{shellConfig, shellConfig, shellConfig}156	err := plugin.setSeparateOutputStreamProperties(shellProperties)157	suite.True(strings.Contains(err.Error(), "invalid stdoutSeparatorPrefix"))158	suite.True(plugin.separateOutput)159}160// Testing setSeparateOutputStreamProperties with invalid stderr prefix161func (suite *ShellTestSuite) TestSetSeparateOutputStreamPropertiesWithInvalidStderrPrefix() {162	plugin := &ShellPlugin{163		context:     suite.mockContext,164		name:        appconfig.PluginNameNonInteractiveCommands,165		dataChannel: suite.mockDataChannel,166		execCmd:     suite.mockCmd,167	}168	shellConfig := mgsContracts.ShellConfig{169		"ls", false, "true", "STD_OUT:\n", "STD$ERR:\n"}170	shellProperties := mgsContracts.ShellProperties{shellConfig, shellConfig, shellConfig}171	err := plugin.setSeparateOutputStreamProperties(shellProperties)172	suite.True(strings.Contains(err.Error(), "invalid stderrSeparatorPrefix"))173	suite.True(plugin.separateOutput)174}175// Testing sendExitCode for NonInteractiveCommands plugin176func (suite *ShellTestSuite) TestSendExitCode() {177	plugin := &ShellPlugin{178		context:     suite.mockContext,179		name:        appconfig.PluginNameNonInteractiveCommands,180		dataChannel: suite.mockDataChannel,181		execCmd:     suite.mockCmd,182	}183	suite.plugin.logger = logger{ipcFilePath: "test.log"}184	ipcFile, _ := os.Create(suite.plugin.logger.ipcFilePath)185	// Deleting file186	defer func() {187		ipcFile.Close()188		os.Remove(suite.plugin.logger.ipcFilePath)189	}()190	exitCode := 0191	suite.mockDataChannel.On("IsActive").Return(true)192	suite.mockDataChannel.On("SendStreamDataMessage", mock.Anything, mock.Anything, mock.Anything).Return(nil)193	plugin.sendExitCode(suite.mockLog, ipcFile, exitCode)194	suite.mockDataChannel.AssertExpectations(suite.T())195}196// Testing sendExitCode when data channel inactive197func (suite *ShellTestSuite) TestSendExitCodeWhenDataChannelInactive() {198	suite.mockDataChannel.On("IsActive").Return(false)199	plugin := &ShellPlugin{200		name:        appconfig.PluginNameNonInteractiveCommands,201		dataChannel: suite.mockDataChannel,202	}203	suite.plugin.logger = logger{ipcFilePath: "ipcfile_for_shell_unit_test.log"}204	ipcFile, _ := os.Create(suite.plugin.logger.ipcFilePath)205	// Deleting file206	defer func() {207		ipcFile.Close()208		os.Remove(suite.plugin.logger.ipcFilePath)209	}()210	exitCode := 0211	err := plugin.sendExitCode(suite.mockLog, ipcFile, exitCode)212	suite.True(strings.Contains(err.Error(), "failed to send exit code as data channel closed"))213	suite.mockDataChannel.AssertExpectations(suite.T())214}215// Testing Execute for NonInteractiveCommand with separate output stream enabled216func (suite *ShellTestSuite) TestExecuteForNonInteractiveCommandsWithSeparateOutputStream() {217	suite.mockCancelFlag.On("Canceled").Return(false)218	suite.mockCancelFlag.On("ShutDown").Return(false)219	suite.mockCancelFlag.On("Wait").Return(task.Completed)220	suite.mockIohandler.On("SetStatus", mock.Anything).Return()221	suite.mockIohandler.On("SetOutput", mock.Anything).Return()222	suite.mockIohandler.On("SetExitCode", mock.Anything).Return()223	suite.mockDataChannel.On("IsActive").Return(true)224	suite.mockDataChannel.On("PrepareToCloseChannel", mock.Anything).Return(nil).Times(1)225	suite.mockDataChannel.On("SendAgentSessionStateMessage", mock.Anything, mgsContracts.Terminating).226		Return(nil).Times(1)227	suite.mockDataChannel.On("SendStreamDataMessage", mock.Anything, mock.Anything, mock.Anything).Return(nil)228	suite.mockCmd.On("Start").Return(nil)229	suite.mockCmd.On("Wait").Return(nil)230	suite.mockCmd.On("Pid").Return(234)231	stdoutPipe, stdoutPipeinput, _ := os.Pipe()232	stdoutPipeinput.Write(payload)233	stderrPipe, stderrPipeinput, _ := os.Pipe()234	stderrPipeinput.Write(payload)235	shellConfig := mgsContracts.ShellConfig{236		"ls", false, "true", "STD_OUT:\n", "STD_ERR:\n"}237	shellProperties := mgsContracts.ShellProperties{shellConfig, shellConfig, shellConfig}238	getCommandExecutor = func(log log.T, shellProps mgsContracts.ShellProperties, isSessionLogger bool, config contracts.Configuration, plugin *ShellPlugin) (err error) {239		plugin.execCmd = suite.mockCmd240		plugin.stdoutPipe = stdoutPipe241		plugin.stderrPipe = stderrPipe242		return nil243	}244	plugin := &ShellPlugin{245		name:        appconfig.PluginNameNonInteractiveCommands,246		context:     suite.mockContext,247		dataChannel: suite.mockDataChannel,248		execCmd:     suite.mockCmd,249	}250	go func() {251		time.Sleep(1000 * time.Millisecond)252		stdoutPipeinput.Close()253		stderrPipeinput.Close()254		time.Sleep(500 * time.Millisecond)255		stdoutPipe.Close()256		stderrPipe.Close()257	}()258	plugin.Execute(259		contracts.Configuration{260			CloudWatchLogGroup:         testCwLogGroupName,261			CloudWatchStreamingEnabled: false,262			SessionId:                  sessionId,263			SessionOwner:               sessionOwner,264		},265		suite.mockCancelFlag,266		suite.mockIohandler,267		suite.mockDataChannel,268		shellProperties)269	suite.mockCancelFlag.AssertExpectations(suite.T())270	suite.mockIohandler.AssertExpectations(suite.T())271	suite.mockDataChannel.AssertExpectations(suite.T())272	suite.mockCmd.AssertExpectations(suite.T())273}274// Testing SetupRoutineToWriteCmdPipelineOutput275func (suite *ShellTestSuite) TestSetupRoutineToWriteCmdPipelineOutput() {276	suite.mockDataChannel.On("IsActive").Return(true)277	var payloadType mgsContracts.PayloadType278	var payloadContent []byte279	suite.mockDataChannel.On("SendStreamDataMessage", mock.Anything, mock.Anything, mock.Anything).Run(func(args mock.Arguments) {280		payloadType = args.Get(1).(mgsContracts.PayloadType)281		payloadContent = args.Get(2).([]byte)282	}).Return(nil)283	stdoutPipe, stdoutPipeinput, _ := os.Pipe()284	stdoutPipeinput.Write(payload)285	stderrPipe, stderrPipeinput, _ := os.Pipe()286	stderrPipeinput.Write(payload)287	plugin := &ShellPlugin{288		name:           appconfig.PluginNameNonInteractiveCommands,289		context:        suite.mockContext,290		dataChannel:    suite.mockDataChannel,291		execCmd:        suite.mockCmd,292		stdoutPipe:     stdoutPipe,293		stderrPipe:     stderrPipe,294		separateOutput: true,295		stdoutPrefix:   "STD_OUT:",296		stderrPrefix:   "STD_ERR:",297	}298	go func() {299		time.Sleep(1000 * time.Millisecond)300		stdoutPipeinput.Close()301		stderrPipeinput.Close()302		time.Sleep(500 * time.Millisecond)303		stdoutPipe.Close()304		stderrPipe.Close()305	}()306	ipcFileName := "shell_util_test_file"307	ipcFile, _ := os.Create(ipcFileName)308	// Deleting file309	defer func() {310		ipcFile.Close()311		os.Remove(ipcFileName)312	}()313	result := plugin.setupRoutineToWriteCmdPipelineOutput(314		suite.mockLog,315		ipcFile,316		false)317	suite.Equal(0, <-result)318	suite.Equal(mgsContracts.Output, payloadType)319	suite.Equal("STD_OUT:testPayload", string(payloadContent[:]))320	suite.mockDataChannel.AssertExpectations(suite.T())321	suite.mockCmd.AssertExpectations(suite.T())322}323// Testing SetupRoutineToWriteCmdPipelineOutput with read error324func (suite *ShellTestSuite) TestSetupRoutineToWriteCmdPipelineOutputWithReadPipeError() {325	suite.mockDataChannel.On("IsActive").Return(true)326	var payloadType mgsContracts.PayloadType327	var payloadContent []byte328	suite.mockDataChannel.On("SendStreamDataMessage", mock.Anything, mock.Anything, mock.Anything).Run(func(args mock.Arguments) {329		payloadType = args.Get(1).(mgsContracts.PayloadType)330		payloadContent = args.Get(2).([]byte)331	}).Return(nil)332	stdoutPipe, stdoutPipeinput, _ := os.Pipe()333	stdoutPipeinput.Write(payload)334	stderrPipe, stderrPipeinput, _ := os.Pipe()335	stderrPipeinput.Write(payload)336	plugin := &ShellPlugin{337		name:           appconfig.PluginNameNonInteractiveCommands,338		context:        suite.mockContext,339		dataChannel:    suite.mockDataChannel,340		execCmd:        suite.mockCmd,341		stdoutPipe:     stdoutPipe,342		stderrPipe:     stderrPipe,343		separateOutput: true,344		stdoutPrefix:   "STD_OUT:",345		stderrPrefix:   "STD_ERR:",346	}347	// Close the output side firstly to trigger it348	go func() {349		time.Sleep(1000 * time.Millisecond)350		stdoutPipe.Close()351		stderrPipe.Close()352		time.Sleep(500 * time.Millisecond)353		stdoutPipeinput.Close()354		stderrPipeinput.Close()355	}()356	ipcFileName := "shell_util_test_file"357	ipcFile, _ := os.Create(ipcFileName)358	// Deleting file359	defer func() {360		ipcFile.Close()361		os.Remove(ipcFileName)362	}()363	result := plugin.setupRoutineToWriteCmdPipelineOutput(364		suite.mockLog,365		ipcFile,366		false)367	suite.Equal(1, <-result)368	suite.Equal(mgsContracts.Output, payloadType)369	suite.Equal("STD_OUT:testPayload", string(payloadContent[:]))370	suite.mockDataChannel.AssertExpectations(suite.T())371	suite.mockCmd.AssertExpectations(suite.T())372}373// Testing SetupRoutineToWriteCmdPipelineOutput for stderr type payload374func (suite *ShellTestSuite) TestSetupRoutineToWriteCmdPipelineOutputForStdErr() {375	suite.mockDataChannel.On("IsActive").Return(true)376	var payloadType mgsContracts.PayloadType377	var payloadContent []byte378	suite.mockDataChannel.On("SendStreamDataMessage", mock.Anything, mock.Anything, mock.Anything).Run(func(args mock.Arguments) {379		payloadType = args.Get(1).(mgsContracts.PayloadType)380		payloadContent = args.Get(2).([]byte)381	}).Return(nil)382	stdoutPipe, stdoutPipeinput, _ := os.Pipe()383	stdoutPipeinput.Write(payload)384	stderrPipe, stderrPipeinput, _ := os.Pipe()385	stderrPipeinput.Write([]byte("testPayload"))386	plugin := &ShellPlugin{387		name:           appconfig.PluginNameNonInteractiveCommands,388		context:        suite.mockContext,389		dataChannel:    suite.mockDataChannel,390		execCmd:        suite.mockCmd,391		stdoutPipe:     stdoutPipe,392		stderrPipe:     stderrPipe,393		separateOutput: true,394		stdoutPrefix:   "STD_OUT:",395		stderrPrefix:   "STD_ERR:",396	}397	go func() {398		time.Sleep(1000 * time.Millisecond)399		stdoutPipeinput.Close()400		stderrPipeinput.Close()401		time.Sleep(500 * time.Millisecond)402		stdoutPipe.Close()403		stderrPipe.Close()404	}()405	ipcFileName := "shell_stderr_util_test_file"406	ipcFile, _ := os.Create(ipcFileName)407	// Deleting file408	defer func() {409		ipcFile.Close()410		os.Remove(ipcFileName)411	}()412	result := plugin.setupRoutineToWriteCmdPipelineOutput(413		suite.mockLog,414		ipcFile,415		true)416	suite.Equal(0, <-result)417	suite.Equal(mgsContracts.StdErr, payloadType)418	suite.Equal("STD_ERR:testPayload", string(payloadContent[:]))419	suite.mockDataChannel.AssertExpectations(suite.T())420	suite.mockCmd.AssertExpectations(suite.T())421}422// Testing SetupRoutineToWriteCmdPipelineOutput when data channel not active423func (suite *ShellTestSuite) TestSetupRoutineToWriteCmdPipelineOutputWhenDataChannelInactive() {424	suite.mockDataChannel.On("IsActive").Return(false)425	stdoutPipe, stdoutPipeinput, _ := os.Pipe()426	stderrPipe, stderrPipeinput, _ := os.Pipe()427	plugin := &ShellPlugin{428		name:           appconfig.PluginNameNonInteractiveCommands,429		context:        suite.mockContext,430		dataChannel:    suite.mockDataChannel,431		execCmd:        suite.mockCmd,432		stdoutPipe:     stdoutPipe,433		stderrPipe:     stderrPipe,434		separateOutput: true,435		stdoutPrefix:   "STD_OUT:",436		stderrPrefix:   "STD_ERR:",437	}438	go func() {439		time.Sleep(1000 * time.Millisecond)440		stdoutPipe.Close()441		stdoutPipeinput.Close()442		stderrPipe.Close()443		stderrPipeinput.Close()444	}()445	ipcFileName := "shell_util_test_file"446	ipcFile, _ := os.Create(ipcFileName)447	// Deleting file448	defer func() {449		ipcFile.Close()450		os.Remove(ipcFileName)451	}()452	result := plugin.setupRoutineToWriteCmdPipelineOutput(453		suite.mockLog,454		ipcFile,455		true)456	suite.Equal(<-result, 1)457	suite.mockDataChannel.AssertExpectations(suite.T())458}...

exec_mocks.go

Source:exec_mocks.go

...88func (mr *MockCmdMockRecorder) Start() *gomock.Call {89	mr.mock.ctrl.T.Helper()90	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Start", reflect.TypeOf((*MockCmd)(nil).Start))91}92// StderrPipe mocks base method93func (m *MockCmd) StderrPipe() (io.ReadCloser, error) {94	m.ctrl.T.Helper()95	ret := m.ctrl.Call(m, "StderrPipe")96	ret0, _ := ret[0].(io.ReadCloser)97	ret1, _ := ret[1].(error)98	return ret0, ret199}100// StderrPipe indicates an expected call of StderrPipe101func (mr *MockCmdMockRecorder) StderrPipe() *gomock.Call {102	mr.mock.ctrl.T.Helper()103	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "StderrPipe", reflect.TypeOf((*MockCmd)(nil).StderrPipe))104}105// StdinPipe mocks base method106func (m *MockCmd) StdinPipe() (io.WriteCloser, error) {107	m.ctrl.T.Helper()108	ret := m.ctrl.Call(m, "StdinPipe")109	ret0, _ := ret[0].(io.WriteCloser)110	ret1, _ := ret[1].(error)111	return ret0, ret1112}113// StdinPipe indicates an expected call of StdinPipe114func (mr *MockCmdMockRecorder) StdinPipe() *gomock.Call {115	mr.mock.ctrl.T.Helper()116	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "StdinPipe", reflect.TypeOf((*MockCmd)(nil).StdinPipe))117}...

main.go

Source:main.go

...80	stdoutPipe, err := cmd.StdoutPipe()81	if err != nil {82		runErr = errors.Wrap(err, "failed creating stdout pipe")83	}84	stderrPipe, err := cmd.StderrPipe()85	if err != nil {86		runErr = errors.Wrap(err, "failed creating stderr pipe")87	}88	if err != nil {89		return "", "", runErr90	}91	if err := cmd.Start(); err != nil {92		runErr = errors.Wrap(err, "failed starting the command")93	}94	stdout, err := ioutil.ReadAll(stdoutPipe)95	if err != nil {96		runErr = errors.Wrap(err, "failed reading from command stdout")97	}98	stderr, err := ioutil.ReadAll(stderrPipe)...

StderrPipe

Using AI Code Generation

1import (2func main() {3	r, w, _ := os.Pipe()4	defer w.Close()5	go func() {6		io.Copy(os.Stdout, r)7	}()8	fmt.Println("This is a test")9	fmt.Fprintln(os.Std

StderrPipe

Using AI Code Generation

1import (2func TestStderrPipe(t *testing.T) {3	if runtime.GOOS == "windows" {4		t.Skip("stderrPipe not supported on Windows")5	}6	cmd := exec.Command("go", "version")7	stderr, err := cmd.StderrPipe()8	if err != nil {9		t.Fatal(err)10	}11	if err := cmd.Start(); err != nil {12		t.Fatal(err)13	}14	data, err := io.ReadAll(stderr)15	if err != nil {16		t.Fatal(err)17	}18	if err := cmd.Wait(); err != nil {19		t.Fatal(err)20	}21	fmt.Printf("%s", data)22}

StderrPipe

Using AI Code Generation

1import (2func main() {3	cmd := exec.Command("go", "run", "1.go")4	stderr, err := cmd.StderrPipe()5	if err != nil {6		fmt.Println(err)7	}8	if err := cmd.Start(); err != nil {9		fmt.Println(err)10	}11	in := bufio.NewScanner(stderr)12	in.Split(bufio.ScanLines)13	for in.Scan() {14		fmt.Println(in.Text())15	}16	if err := cmd.Wait(); err != nil {17		fmt.Println(err)18	}19}20if err := cmd.Wait(); err != nil {21import (22func main() {23	cmd := exec.Command("go", "run", "1.go")24	stderr, err := cmd.StderrPipe()25	if err != nil {26		fmt.Println(err)27	}28	if err := cmd.Start(); err != nil {29		fmt.Println(err)30	}31	in := bufio.NewScanner(stderr)32	in.Split(bufio.ScanLines)33	for in.Scan() {34		fmt.Println(in.Text())35	}36	if err := cmd.Wait(); err != nil {37		fmt.Println(err)38	}39}40import (41func main() {42	cmd := exec.Command("go", "run", "1.go")43	stderr, err := cmd.StderrPipe()44	if err != nil {45		fmt.Println(err)46	}47	if err := cmd.Start(); err != nil {48		fmt.Println(err)49	}50	in := bufio.NewScanner(stderr)51	in.Split(bufio.ScanLines)52	for in.Scan() {53		fmt.Println(in.Text())54	}55	if err := cmd.Wait(); err != nil {56		fmt.Println(err)57	}58}

StderrPipe

Using AI Code Generation

1import (2func main() {3    cmd := exec.Command("go", "run", "1.go")4    stderr, err := cmd.StderrPipe()5    if err != nil {6        fmt.Println(err)7    }8    err = cmd.Start()9    if err != nil {10        fmt.Println(err)11    }12    buf := make([]byte, 1024)13    for {14        n, err := stderr.Read(buf)15        if n == 0 {16        }17        if err != nil && err != io.EOF {18            fmt.Println(err)19        }20        fmt.Print(string(buf[:n]))21    }22    cmd.Wait()23    fmt.Println("done")24}

StderrPipe

Using AI Code Generation

1import (2func main() {3	cmd := exec.Command("go", "run", "1.go")4	stdout, err := cmd.StdoutPipe()5	if err != nil {6		log.Fatal(err)7	}8	stderr, err := cmd.StderrPipe()9	if err != nil {10		log.Fatal(err)11	}12	go func() {13		for {14			buf := make([]byte, 1024)15			n, err := stdout.Read(buf)16			if n > 0 {17				fmt.Print(string(buf[:n]))18			}19			if err != nil {20				if err != io.EOF {21					log.Fatal(err)22				}23			}24		}25	}()26	go func() {27		for {28			buf := make([]byte, 1024)29			n, err := stderr.Read(buf)30			if n > 0 {31				fmt.Print(string(buf[:n]))32			}33			if err != nil {34				if err != io.EOF {35					log.Fatal(err)36				}37			}38		}39	}()40	if err := cmd.Start(); err != nil {41		log.Fatal(err)42	}43	if err := cmd.Wait(); err != nil {44		log.Fatal(err)45	}46}

StderrPipe

Using AI Code Generation

1func main() {2    mock := new(Mock)3    reader, writer := io.Pipe()4    mock.On("StderrPipe").Return(reader)5    reader2, writer2 := io.Pipe()6    mock.On("StdoutPipe").Return(reader2)7    reader3, writer3 := io.Pipe()8    mock.On("StdinPipe").Return(reader3)9    reader4, writer4 := io.Pipe()10    mock.On("Wait").Return(reader4)11    reader5, writer5 := io.Pipe()12    mock.On("Start").Return(reader5)13    reader6, writer6 := io.Pipe()14    mock.On("Kill").Return(reader6)15    reader7, writer7 := io.Pipe()16    mock.On("Run").Return(reader7)17    reader8, writer8 := io.Pipe()18    mock.On("Output").Return(reader8)19    reader9, writer9 := io.Pipe()20    mock.On("CombinedOutput").Return(reader9)21    reader10, writer10 := io.Pipe()22    mock.On("SetDir").Return(reader10)23    reader11, writer11 := io.Pipe()

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