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How to use PauseIntercepting method of internal Package

Best Ginkgo code snippet using internal.PauseIntercepting

output_interceptor.go

Source:output_interceptor.go

...38type OutputInterceptor interface {39	StartInterceptingOutput()40	StartInterceptingOutputAndForwardTo(io.Writer)41	StopInterceptingAndReturnOutput() string42	PauseIntercepting()43	ResumeIntercepting()44	Shutdown()45}46func NewOutputInterceptor() OutputInterceptor {47	return NewOSGlobalReassigningOutputInterceptor()48}49type NoopOutputInterceptor struct{}50func (interceptor NoopOutputInterceptor) StartInterceptingOutput()                      {}51func (interceptor NoopOutputInterceptor) StartInterceptingOutputAndForwardTo(io.Writer) {}52func (interceptor NoopOutputInterceptor) StopInterceptingAndReturnOutput() string       { return "" }53func (interceptor NoopOutputInterceptor) PauseIntercepting()                            {}54func (interceptor NoopOutputInterceptor) ResumeIntercepting()                           {}55func (interceptor NoopOutputInterceptor) Shutdown()                                     {}56type pipePair struct {57	reader *os.File58	writer *os.File59}60func startPipeFactory(pipeChannel chan pipePair, shutdown chan interface{}) {61	for {62		//make the next pipe...63		pair := pipePair{}64		pair.reader, pair.writer, _ = os.Pipe()65		select {66		//...and provide it to the next consumer (they are responsible for closing the files)67		case pipeChannel <- pair:68			continue69		//...or close the files if we were told to shutdown70		case <-shutdown:71			pair.reader.Close()72			pair.writer.Close()73			return74		}75	}76}77type interceptorImplementation interface {78	CreateStdoutStderrClones() (*os.File, *os.File)79	ConnectPipeToStdoutStderr(*os.File)80	RestoreStdoutStderrFromClones(*os.File, *os.File)81	ShutdownClones(*os.File, *os.File)82}83type genericOutputInterceptor struct {84	intercepting bool85	stdoutClone *os.File86	stderrClone *os.File87	pipe        pipePair88	shutdown           chan interface{}89	emergencyBailout   chan interface{}90	pipeChannel        chan pipePair91	interceptedContent chan string92	forwardTo         io.Writer93	accumulatedOutput string94	implementation interceptorImplementation95}96func (interceptor *genericOutputInterceptor) StartInterceptingOutput() {97	interceptor.StartInterceptingOutputAndForwardTo(io.Discard)98}99func (interceptor *genericOutputInterceptor) StartInterceptingOutputAndForwardTo(w io.Writer) {100	if interceptor.intercepting {101		return102	}103	interceptor.accumulatedOutput = ""104	interceptor.forwardTo = w105	interceptor.ResumeIntercepting()106}107func (interceptor *genericOutputInterceptor) StopInterceptingAndReturnOutput() string {108	if interceptor.intercepting {109		interceptor.PauseIntercepting()110	}111	return interceptor.accumulatedOutput112}113func (interceptor *genericOutputInterceptor) ResumeIntercepting() {114	if interceptor.intercepting {115		return116	}117	interceptor.intercepting = true118	if interceptor.stdoutClone == nil {119		interceptor.stdoutClone, interceptor.stderrClone = interceptor.implementation.CreateStdoutStderrClones()120		interceptor.shutdown = make(chan interface{})121		go startPipeFactory(interceptor.pipeChannel, interceptor.shutdown)122	}123	// Now we make a pipe, we'll use this to redirect the input to the 1 and 2 file descriptors (this is how everything else in the world is tring to log to stdout and stderr)124	// we get the pipe from our pipe factory.  it runs in the background so we can request the next pipe while the spec being intercepted is running125	interceptor.pipe = <-interceptor.pipeChannel126	interceptor.emergencyBailout = make(chan interface{})127	//Spin up a goroutine to copy data from the pipe into a buffer, this is how we capture any output the user is emitting128	go func() {129		buffer := &bytes.Buffer{}130		destination := io.MultiWriter(buffer, interceptor.forwardTo)131		copyFinished := make(chan interface{})132		reader := interceptor.pipe.reader133		go func() {134			io.Copy(destination, reader)135			reader.Close() // close the read end of the pipe so we don't leak a file descriptor136			close(copyFinished)137		}()138		select {139		case <-copyFinished:140			interceptor.interceptedContent <- buffer.String()141		case <-interceptor.emergencyBailout:142			interceptor.interceptedContent <- ""143		}144	}()145	interceptor.implementation.ConnectPipeToStdoutStderr(interceptor.pipe.writer)146}147func (interceptor *genericOutputInterceptor) PauseIntercepting() {148	if !interceptor.intercepting {149		return150	}151	// first we have to close the write end of the pipe.  To do this we have to close all file descriptors pointing152	// to the write end.  So that would be the pipewriter itself, and FD #1 and FD #2 if we've Dup2'd them153	interceptor.pipe.writer.Close() // the pipewriter itself154	// we also need to stop intercepting. we do that by reconnecting the stdout and stderr file descriptions back to their respective #1 and #2 file descriptors;155	// this also closes #1 and #2 before it points that their original stdout and stderr file descriptions156	interceptor.implementation.RestoreStdoutStderrFromClones(interceptor.stdoutClone, interceptor.stderrClone)157	var content string158	select {159	case content = <-interceptor.interceptedContent:160	case <-time.After(BAILOUT_TIME):161		/*162			By closing all the pipe writer's file descriptors associated with the pipe writer's file description the io.Copy reading from the reader163			should eventually receive an EOF and exit.164			**However**, if the user has spun up an external process and passed in os.Stdout/os.Stderr to cmd.Stdout/cmd.Stderr then the external process165			will have a file descriptor pointing to the pipe writer's file description and it will not close until the external process exits.166			That would leave us hanging here waiting for the io.Copy to close forever.  Instead we invoke this emergency escape valve.  This returns whatever167			content we've got but leaves the io.Copy running.  This ensures the external process can continue writing without hanging at the cost of leaking a goroutine168			and file descriptor (those these will be cleaned up when the process exits).169			We tack on a message to notify the user that they've hit this edgecase and encourage them to address it.170		*/171		close(interceptor.emergencyBailout)172		content = <-interceptor.interceptedContent + BAILOUT_MESSAGE173	}174	interceptor.accumulatedOutput += content175	interceptor.intercepting = false176}177func (interceptor *genericOutputInterceptor) Shutdown() {178	interceptor.PauseIntercepting()179	if interceptor.stdoutClone != nil {180		close(interceptor.shutdown)181		interceptor.implementation.ShutdownClones(interceptor.stdoutClone, interceptor.stderrClone)182		interceptor.stdoutClone = nil183		interceptor.stderrClone = nil184	}185}186/* This is used on windows builds but included here so it can be explicitly tested on unix systems too */187func NewOSGlobalReassigningOutputInterceptor() OutputInterceptor {188	return &genericOutputInterceptor{189		interceptedContent: make(chan string),190		pipeChannel:        make(chan pipePair),191		shutdown:           make(chan interface{}),192		implementation:     &osGlobalReassigningOutputInterceptorImpl{},...

output_interceptor_test.go

Source:output_interceptor_test.go

...74		})75		It("doesn't get stuck if it's paused and resumed before starting an external process that attaches to stdout/stderr", func() {76			// See GitHub issue #851: https://github.com/onsi/ginkgo/issues/85177			interceptor.StartInterceptingOutput()78			interceptor.PauseIntercepting()79			cmd := exec.Command("sleep", "60")80			//by threading stdout and stderr through, the sleep process will hold them open and prevent the interceptor from stopping:81			cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr82			Î©(cmd.Start()).Should(Succeed())83			interceptor.ResumeIntercepting()84			fmt.Println("hi stdout")85			fmt.Fprintln(os.Stderr, "hi stderr")86			output := interceptor.StopInterceptingAndReturnOutput()87			Î©(output).Should(Equal("hi stdout\nhi stderr\n"))88			Î©(output).ShouldNot(ContainSubstring(internal.BAILOUT_MESSAGE))89			cmd.Process.Kill()90		})91		It("can start/stop/pause/resume correctly", func() {92			interceptor.StartInterceptingOutput()93			fmt.Fprint(os.Stdout, "O-A")94			fmt.Fprint(os.Stderr, "E-A")95			interceptor.PauseIntercepting()96			fmt.Fprint(os.Stdout, "O-B")97			fmt.Fprint(os.Stderr, "E-B")98			interceptor.ResumeIntercepting()99			fmt.Fprint(os.Stdout, "O-C")100			fmt.Fprint(os.Stderr, "E-C")101			interceptor.ResumeIntercepting() //noop102			fmt.Fprint(os.Stdout, "O-D")103			fmt.Fprint(os.Stderr, "E-D")104			interceptor.PauseIntercepting()105			fmt.Fprint(os.Stdout, "O-E")106			fmt.Fprint(os.Stderr, "E-E")107			interceptor.PauseIntercepting() //noop108			fmt.Fprint(os.Stdout, "O-F")109			fmt.Fprint(os.Stderr, "E-F")110			interceptor.ResumeIntercepting()111			fmt.Fprint(os.Stdout, "O-G")112			fmt.Fprint(os.Stderr, "E-G")113			interceptor.StartInterceptingOutput() //noop114			fmt.Fprint(os.Stdout, "O-H")115			fmt.Fprint(os.Stderr, "E-H")116			interceptor.PauseIntercepting()117			output := interceptor.StopInterceptingAndReturnOutput()118			Î©(output).Should(Equal("O-AE-AO-CE-CO-DE-DO-GE-GO-HE-H"))119		})120	}121	Context("the OutputInterceptor for this OS", func() {122		BeforeEach(func() {123			interceptor = internal.NewOutputInterceptor()124			DeferCleanup(interceptor.Shutdown)125		})126		sharedInterceptorTests()127	})128	Context("the OSGlobalReassigningOutputInterceptor used on windows", func() {129		BeforeEach(func() {130			interceptor = internal.NewOSGlobalReassigningOutputInterceptor()...

PauseIntercepting

Using AI Code Generation

1import (2func main() {3    hook := test.NewGlobal()4    logrus.Warn("Hello World!")5    hook.PauseIntercepting()6    logrus.Warn("Hello World!")7    hook.UnpauseIntercepting()8    logrus.Warn("Hello World!")9    fmt.Println(hook.Entries)10}11[{0xc0000b4000 2020-10-10 17:47:31.855 +0530 IST m=+0.000000001 Hello World! map[]}]

PauseIntercepting

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello World")4    time.Sleep(5 * time.Second)5}6import (7func main() {8    fmt.Println("Hello World")9    time.Sleep(5 * time.Second)10}11import (12func main() {13    fmt.Println("Hello World")14    time.Sleep(5 * time.Second)15}16import (17func main() {18    fmt.Println("Hello World")19    time.Sleep(5 * time.Second)20}21import (22func main() {23    fmt.Println("Hello World")24    time.Sleep(5 * time.Second)25}26import (27func main() {28    fmt.Println("Hello World")29    time.Sleep(5 * time.Second)30}31import (32func main() {33    fmt.Println("Hello World")34    time.Sleep(5 * time.Second)35}36import (37func main() {38    fmt.Println("Hello World")39    time.Sleep(5 * time.Second)40}41import (42func main() {43    fmt.Println("Hello World")44    time.Sleep(5 * time.Second)45}46import (47func main() {

PauseIntercepting

Using AI Code Generation

1import (2func main() {3    vm := otto.New()4    vm.Set("print", func(call otto.FunctionCall) otto.Value {5        fmt.Println(call.Argument(0).String())6        return otto.Value{}7    })8    vm.Set("exit", func(call otto.FunctionCall) otto.Value {9        os.Exit(0)10        return otto.Value{}11    })12    _, err := vm.Run(`13        function print(value) {14            console.log(value);15        }16        function exit() {17            process.exit();18        }19        function run() {20            print('hello world');21            exit();22        }23        run();24    if err != nil {25        fmt.Println(err)26    }27}28import (29func main() {30    vm := otto.New()31    vm.Set("print", func(call otto.FunctionCall) otto.Value {32        fmt.Println(call.Argument(0).String())33        return otto.Value{}34    })35    vm.Set("exit", func(call otto.FunctionCall) otto.Value {36        os.Exit(0)37        return otto.Value{}38    })39    _, err := vm.Run(`40        function print(value) {41            console.log(value);42        }43        function exit() {44            process.exit();45        }46        function run() {47            print('hello world');48            exit();49        }50        run();51    if err != nil {52        fmt.Println(err)53    }54}55import (56func main() {57    vm := otto.New()58    vm.Set("print", func(call otto.FunctionCall) otto.Value {59        fmt.Println(call.Argument(0).String())60        return otto.Value{}61    })62    vm.Set("exit", func(call otto.FunctionCall) otto.Value {63        os.Exit(0)64        return otto.Value{}65    })66    _, err := vm.Run(`67        function print(value)

PauseIntercepting

Using AI Code Generation

12: import (26: func main() {37: log.Root().SetHandler(term.NewStderrHandler())48: log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.Root().GetHandler()))59: log.Info("Hello")610: }73: import (87: func main() {98: log.Root().SetHandler(term.NewStderrHandler())109: log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.Root().GetHandler()))1110: log.Info("Hello")1211: log.Debug("Hello")1312: }

PauseIntercepting

Using AI Code Generation

1import (2func main() {3	interceptor.PauseIntercepting()4	fmt.Println("Hello World")5}6import (7func main() {8	interceptor.ResumeIntercepting()9	fmt.Println("Hello World")10}

PauseIntercepting

Using AI Code Generation

1I am new to Go and I am trying to understand the difference between the two. I have seen a lot of examples where people will use the underscore to import a package. For example:2import (3I understand that this will import the package, but not use it in the code. I am wondering why you would do this? I have also seen this used in the standard library, for example:4import (5import (6import (7import (8import (9import (10import (11import (12import (13import (

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