Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use NewChanWriter method of stream Package

Best Toxiproxy code snippet using stream.NewChanWriter

io_chan_test.go

Source:io_chan_test.go

...7)8func TestBasicReadWrite(t *testing.T) {9	send := []byte("hello world")10	c := make(chan *StreamChunk)11	writer := NewChanWriter(c)12	reader := NewChanReader(c)13	go writer.Write(send)14	buf := make([]byte, len(send))15	n, err := reader.Read(buf)16	if n != len(send) {17		t.Fatalf("Read wrong number of bytes: %d expected %d", n, len(send))18	}19	if err != nil {20		t.Fatal("Couldn't read from stream", err)21	}22	if !bytes.Equal(buf, send) {23		t.Fatal("Got wrong message from stream", string(buf))24	}25	writer.Close()26	n, err = reader.Read(buf)27	if err != io.EOF {28		t.Fatal("Read returned wrong error after close:", err)29	}30	if n != 0 {31		t.Fatalf("Read still returned data after close: %d bytes", n)32	}33}34func TestReadMoreThanWrite(t *testing.T) {35	send := []byte("hello world")36	c := make(chan *StreamChunk)37	writer := NewChanWriter(c)38	reader := NewChanReader(c)39	go writer.Write(send)40	buf := make([]byte, len(send)+10)41	n, err := reader.Read(buf)42	if n != len(send) {43		t.Fatalf("Read wrong number of bytes: %d expected %d", n, len(send))44	}45	if err != nil {46		t.Fatal("Couldn't read from stream", err)47	}48	if !bytes.Equal(buf[:n], send) {49		t.Fatal("Got wrong message from stream", string(buf[:n]))50	}51	writer.Close()52	n, err = reader.Read(buf)53	if err != io.EOF {54		t.Fatal("Read returned wrong error after close:", err)55	}56	if n != 0 {57		t.Fatalf("Read still returned data after close: %d bytes", n)58	}59}60func TestReadLessThanWrite(t *testing.T) {61	send := []byte("hello world")62	c := make(chan *StreamChunk)63	writer := NewChanWriter(c)64	reader := NewChanReader(c)65	go writer.Write(send)66	buf := make([]byte, 6)67	n, err := reader.Read(buf)68	if n != len(buf) {69		t.Fatalf("Read wrong number of bytes: %d expected %d", n, len(buf))70	}71	if err != nil {72		t.Fatal("Couldn't read from stream", err)73	}74	if !bytes.Equal(buf, send[:len(buf)]) {75		t.Fatal("Got wrong message from stream", string(buf))76	}77	writer.Close()78	n, err = reader.Read(buf)79	if n != len(send)-len(buf) {80		t.Fatalf("Read wrong number of bytes: %d expected %d", n, len(send)-len(buf))81	}82	if err != nil {83		t.Fatal("Couldn't read from stream", err)84	}85	if !bytes.Equal(buf[:n], send[len(buf):]) {86		t.Fatal("Got wrong message from stream", string(buf[:n]))87	}88	n, err = reader.Read(buf)89	if err != io.EOF {90		t.Fatal("Read returned wrong error after close:", err)91	}92	if n != 0 {93		t.Fatalf("Read still returned data after close: %d bytes", n)94	}95}96func TestMultiReadWrite(t *testing.T) {97	send := []byte("hello world, this message is longer")98	c := make(chan *StreamChunk)99	writer := NewChanWriter(c)100	reader := NewChanReader(c)101	go func() {102		writer.Write(send[:9])103		writer.Write(send[9:19])104		writer.Write(send[19:])105		writer.Close()106	}()107	buf := make([]byte, 10)108	for read := 0; read < len(send); {109		n, err := reader.Read(buf)110		if err != nil {111			t.Fatal("Couldn't read from stream", err, n)112		}113		if !bytes.Equal(buf[:n], send[read:read+n]) {114			t.Fatal("Got wrong message from stream", string(buf))115		}116		read += n117	}118	n, err := reader.Read(buf)119	if err != io.EOF {120		t.Fatal("Read returned wrong error after close:", err, string(buf[:n]))121	}122	if !bytes.Equal(buf[:n], send[len(send)-n:]) {123		t.Fatal("Got wrong message from stream", string(buf[:n]))124	}125}126func TestMultiWriteWithCopy(t *testing.T) {127	send := []byte("hello world, this message is longer")128	c := make(chan *StreamChunk)129	writer := NewChanWriter(c)130	reader := NewChanReader(c)131	go func() {132		writer.Write(send[:9])133		writer.Write(send[9:19])134		writer.Write(send[19:])135		writer.Close()136	}()137	buf := new(bytes.Buffer)138	n, err := io.Copy(buf, reader)139	if int(n) != len(send) {140		t.Fatalf("Read wrong number of bytes: %d expected %d", n, len(send))141	}142	if err != nil {143		t.Fatal("Couldn't read from stream", err)144	}145	if !bytes.Equal(buf.Bytes(), send) {146		t.Fatal("Got wrong message from stream", buf.String())147	}148}149func TestReadInterrupt(t *testing.T) {150	send := []byte("hello world")151	c := make(chan *StreamChunk)152	interrupt := make(chan struct{})153	writer := NewChanWriter(c)154	reader := NewChanReader(c)155	reader.SetInterrupt(interrupt)156	go writer.Write(send)157	buf := make([]byte, len(send))158	n, err := reader.Read(buf)159	if n != len(send) {160		t.Fatalf("Read wrong number of bytes: %d expected %d", n, len(send))161	}162	if err != nil {163		t.Fatal("Couldn't read from stream", err)164	}165	if !bytes.Equal(buf, send) {166		t.Fatal("Got wrong message from stream", string(buf))167	}...

chan_test.go

Source:chan_test.go

...7)8func TestBasicReadWrite(t *testing.T) {9	send := []byte("hello world")10	c := make(chan *Chunk)11	writer := NewChanWriter(c)12	reader := NewChanReader(c)13	buf := make([]byte, len(send))14	go writer.Write(send)15	n, err := reader.Read(buf)16	if err != nil {17		t.Fatalf("read has error: %v", err)18	}19	if n != len(send) {20		t.Fatalf("read wrong number of bytes: %v, expected: %v", n, len(send))21	}22	if !bytes.Equal(send, buf) {23		t.Fatalf("data not equal")24	}25	writer.Close()26	n, err = reader.Read(buf)27	if err != io.EOF {28		t.Fatal("read from closed stream chan should return EOF", err)29	}30	if n != 0 {31		t.Fatal("read still return data")32	}33}34func TestReadMoreThanWrite(t *testing.T) {35	send := []byte("hello world")36	c := make(chan *Chunk)37	writer := NewChanWriter(c)38	reader := NewChanReader(c)39	buf := make([]byte, len(send)+10)40	go writer.Write(send)41	n, err := reader.Read(buf)42	if err != nil {43		t.Fatalf("read has error: %v", err)44	}45	if n != len(send) {46		t.Fatalf("read wrong number of bytes: %v, expected: %v", n, len(send))47	}48	if !bytes.Equal(send, buf[:n]) {49		t.Fatalf("data not equal")50	}51	writer.Close()52	n, err = reader.Read(buf)53	if err != io.EOF {54		t.Fatal("read from closed stream chan should return EOF", err)55	}56	if n != 0 {57		t.Fatal("read still return data")58	}59}60func TestReadLessThanWrite(t *testing.T) {61	send := []byte("hello world")62	c := make(chan *Chunk)63	writer := NewChanWriter(c)64	reader := NewChanReader(c)65	go writer.Write(send)66	buf := make([]byte, 6)67	n, err := reader.Read(buf)68	if err != nil {69		t.Fatal("could not read from the channel", err)70	}71	if n != len(buf) {72		t.Fatalf("read wrong number from steam: %v, expected: %v", n, len(buf))73	}74	if !bytes.Equal(buf, send[:len(buf)]) {75		t.Fatalf("got wrong message %v", string(buf))76	}77	writer.Close()78	n, err = reader.Read(buf)79	if err != nil {80		t.Fatal("could not read from the channel")81	}82	if n != len(send)-len(buf) {83		t.Fatalf("read wrong number from steam: %v, expected: %v", n, len(send)-len(buf))84	}85	if !bytes.Equal(buf[:n], send[len(buf):]) {86		t.Fatal("got wrong message", string(buf[:n]))87	}88	n, err = reader.Read(buf)89	if err != io.EOF {90		t.Fatal("read from closed stream chan should return EOF", err)91	}92	if n != 0 {93		t.Fatal("read still return data")94	}95}96func TestMultiReadWrite(t *testing.T) {97	send := []byte("hello world, this message is longer")98	c := make(chan *Chunk)99	writer := NewChanWriter(c)100	reader := NewChanReader(c)101	go func() {102		writer.Write(send[:9])103		writer.Write(send[9:19])104		writer.Write(send[19:])105		writer.Close()106	}()107	buf := make([]byte, 10)108	for readIndex := 0; readIndex < len(send); {109		n, err := reader.Read(buf)110		if err != nil {111			t.Fatal("could not read from the stream channel", err)112		}113		if !bytes.Equal(buf[:n], send[readIndex:readIndex+n]) {114			t.Fatal("got wrong message:", string(buf[:n]))115		}116		readIndex += n117	}118	n, err := reader.Read(buf)119	if err != io.EOF {120		t.Fatal("read from closed stream chan should return EOF", err)121	}122	if n != 0 {123		t.Fatal("read still return data")124	}125}126func TestMultiWriteWithCopy(t *testing.T) {127	send := []byte("hello world, this message is longer")128	c := make(chan *Chunk)129	writer := NewChanWriter(c)130	reader := NewChanReader(c)131	go func() {132		writer.Write(send[:9])133		writer.Write(send[9:19])134		writer.Write(send[19:])135		writer.Close()136	}()137	buf := new(bytes.Buffer)138	n, err := io.Copy(buf, reader)139	if err != nil {140		t.Fatal("copy failed", err)141	}142	if int(n) != len(send) {143		t.Fatalf("read wrong number from steam: %v, expected: %v", n, len(send))144	}145	if !bytes.Equal(buf.Bytes(), send) {146		t.Fatal("got wrong message", buf.String())147	}148}149func TestReadInterrupt(t *testing.T) {150	send := []byte("hello world")151	c := make(chan *Chunk)152	interrupt := make(chan struct{})153	reader := NewChanReader(c)154	reader.SetInterrupt(interrupt)155	writer := NewChanWriter(c)156	go writer.Write(send)157	buf := make([]byte, len(send))158	reader.Read(buf)159	go func() {160		time.Sleep(50 * time.Millisecond)161		interrupt <- struct{}{}162	}()163	n, err := reader.Read(buf)164	if err != ErrReadInterrupted {165		t.Fatal("should return interrupt error, but got", err)166	}167	if n != 0 {168		t.Fatal("no data should read, but got", n)169	}...

NewChanWriter

Using AI Code Generation

1func main() {2    stream := NewChanWriter()3    go func() {4        for i := 0; i < 10; i++ {5            stream.Write([]byte("Hello"))6        }7        stream.Close()8    }()9    for {10        if !ok {11        }12        fmt.Println(string(b))13    }14}

NewChanWriter

Using AI Code Generation

1func main() {2    stream := NewChanWriter(0)3    go func() {4        defer stream.Close()5        for i := 0; i < 10; i++ {6            stream.Write([]byte("test"))7        }8    }()9    for v := range stream.C {10        fmt.Println(string(v))11    }12}

NewChanWriter

Using AI Code Generation

1func main() {2    c := make(chan string)3    go func() {4        for {5            fmt.Println(<-c)6        }7    }()8    w := stream.NewChanWriter(c)9    w.Write([]byte("Hello World"))10}

NewChanWriter

Using AI Code Generation

1import (2func main() {3	c, err := pty.Start("/bin/bash")4	if err != nil {5		panic(err)6	}7	w := pty.NewChanWriter(c)8	n, err := w.Write([]byte("echo hello9	if err != nil {10		panic(err)11	}12	fmt.Printf("wrote %d bytes13	io.Copy(os.Stdout, c)14}15import (16func main() {17	c, err := pty.Start("/bin/bash")18	if err != nil {19		panic(err)20	}21	r := pty.NewChanReader(c)22	go io.Copy(os.Stdout, c)23	n, err := r.Write([]byte("echo hello24	if err != nil {25		panic(err)26	}27	fmt.Printf("wrote %d bytes28}

NewChanWriter

Using AI Code Generation

1import (2func main() {3    ch := make(chan string)4    writer := stream.NewChanWriter(ch)5    writer.Write([]byte("hello"))6    writer.Close()7    fmt.Println(<-ch)8}9import (10func main() {11    ch := make(chan string)12    reader := stream.NewChanReader(ch)13    fmt.Println(string(reader.Read()))14}15import (16func main() {17    ch := make(chan string)18    reader := stream.NewChan(ch)19    writer := stream.NewChan(ch)20    writer.Write([]byte("hello"))21    writer.Close()22    fmt.Println(string(reader.Read()))23}24import (25func main() {26    ch := make(chan string)27    reader := stream.NewChan(ch)28    writer := stream.NewChan(ch)29    writer.Write([]byte("hello"))30    writer.Close()

NewChanWriter

Using AI Code Generation

1import (2func main() {3    s := stream.New()4    c := make(chan string)5    w := s.NewChanWriter(c)6    w.Write([]byte("hello world"))7    fmt.Println(<-c)8}9import (10func main() {11    s := stream.New()12    c := make(chan string)13    r := s.NewChanReader(c)14    b := make([]byte, 1024)15    r.Read(b)16    fmt.Println(string(b))17}18import (19func main() {20    s := stream.New()21    c := make(chan string)22    rw := s.NewChanRW(c)23    rw.Write([]byte("hello world"))24    b := make([]byte, 1024)25    rw.Read(b)26    fmt.Println(string(b))27}28import (29func main() {30    s := stream.New()31    c := make(chan string)32    rw := s.NewChanRW(c)33    rw.Write([]byte("hello world"))34    b := make([]byte, 1024)

NewChanWriter

Using AI Code Generation

1import (2func main() {3	stream := golstream.NewStream()4	stream.NewChanWriter("test", 10)5	fmt.Println("test:", stream.ChanWriter["test"])6}7import (8func main() {9	stream := golstream.NewStream()10	stream.NewChanReader("test", 10)11	fmt.Println("test:", stream.ChanReader["test"])12}13import (14func main() {15	stream := golstream.NewStream()16	stream.NewChanWriter("test", 10)17	stream.NewChanReader("test", 10)18	fmt.Println("test:", stream.ChanWriter["test"])19	fmt.Println("test:", stream.ChanReader["test"])20}21import (22func main() {23	stream := golstream.NewStream()24	stream.NewChanWriter("test", 10)25	stream.NewChanReader("test", 10)26	fmt.Println("test:", <-stream.ChanReader["test"])27}28import (29func main() {30	stream := golstream.NewStream()31	stream.NewChanWriter("test", 10)32	stream.NewChanReader("test", 10)33	fmt.Println("test:", <-stream.ChanReader["test"])34	fmt.Println("test:", <-stream.ChanReader["test"])35}36import (

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.