How to use NewChanReader method of stream Package

Best Toxiproxy code snippet using stream.NewChanReader

io_chan_test.go

Source:io_chan_test.go Github

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...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 }168 /​/​ Try interrupting the stream mid-read...

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chan_test.go

Source:chan_test.go Github

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...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 {...

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NewChanReader

Using AI Code Generation

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1import (2func main() {3 if err != nil {4 fmt.Println(err)5 os.Exit(1)6 }7 stream := make(chan byte)8 reader := io.NewChanReader(stream)9 go func() {10 io.Copy(stream, res.Body)11 close(stream)12 }()13 io.Copy(os.Stdout, reader)14}

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NewChanReader

Using AI Code Generation

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1import (2func main() {3 f, err := os.Open("1.go")4 if err != nil {5 fmt.Println(err)6 }7 defer f.Close()8 s := NewStream(f)9 cr := s.NewChanReader()10 for {11 n, err := cr.Read(buf[:])12 if err == io.EOF {13 }14 if err != nil {15 fmt.Println(err)16 }17 fmt.Printf("%s", buf[:n])18 }19}20import (21func main() {22 f, err := os.OpenFile("2.go", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)23 if err != nil {24 fmt.Println(err)25 }26 defer f.Close()27 s := NewStream(f)28 cw := s.NewChanWriter()29 go func() {30 for i := 0; i < 10; i++ {31 fmt.Fprintf(cw,

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NewChanReader

Using AI Code Generation

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1import (2func main() {3 r := stream.NewChanReader(os.Stdin)4 for {5 b, err := r.Read()6 if err != nil {7 if err != io.EOF {8 fmt.Println(err)9 }10 }11 fmt.Println(string(b))12 }13}14import (15type ChanReader struct {16}17func NewChanReader(r io.Reader) *ChanReader {18 cr := &ChanReader{19 ch: make(chan []byte),20 }21 go cr.read(r)22}23func (cr *ChanReader) Read() ([]byte, error) {24 if !ok {25 }26}27func (cr *ChanReader) Close() error {28 cr.mu.Lock()29 defer cr.mu.Unlock()30 close(cr.ch)31}32func (cr *ChanReader) read(r io.Reader) {33 b := make([]byte, 4096)34 for {35 n, err := r.Read(b)36 if err != nil {37 cr.Close()38 }39 cr.mu.Lock()40 cr.mu.Unlock()41 }42}43main.main()44import (45func main() {46 file, err := os.Open("/​home/​raghuveer/​go/​src/​github.com/​raghuveer/​go/​src/​1.go")47 if err != nil {48 fmt.Println("Error: ", err)

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NewChanReader

Using AI Code Generation

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1import (2func main() {3 stream := golstream.NewChanReader()4 go func() {5 for i := 0; i < 10; i++ {6 stream.Write([]byte(fmt.Sprintf("line %d7 }8 stream.Close()9 }()10 for {11 line, err := stream.ReadLine()12 if err == io.EOF {13 }14 if err != nil {15 panic(err)16 }17 fmt.Printf("%s", line)18 }19}20import (21func main() {22 stream := golstream.NewChanWriter()23 go func() {24 for i := 0; i < 10; i++ {25 stream.Write([]byte(fmt.Sprintf("line %d26 }27 stream.Close()28 }()29 for {30 line, err := stream.ReadLine()31 if err == io.EOF {32 }33 if err != nil {34 panic(err)35 }36 fmt.Printf("%s", line)37 }38}39import (40func main() {41 stream := golstream.NewChanPipe()42 go func() {43 for i := 0; i < 10; i++ {44 stream.Write([]byte(fmt.Sprintf("line %d45 }46 stream.Close()47 }()48 for {49 line, err := stream.ReadLine()50 if err == io.EOF {51 }52 if err != nil {53 panic(err)54 }55 fmt.Printf("%s

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NewChanReader

Using AI Code Generation

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1import (2func main() {3 vm := otto.New()4 vm.Set("println", fmt.Println)5 vm.Set("print", fmt.Print)6 vm.Run(`7 var stream = require('stream');8 var reader = new stream.Readable;9 reader.push('beep ');10 reader.push('boop');11 reader.push(null);12 reader.pipe(process.stdout);13}14import (15func main() {16 vm := otto.New()17 vm.Set("println", fmt.Println)18 vm.Set("print", fmt.Print)19 vm.Run(`20 var stream = require('stream');21 var writer = new stream.Writable;22 writer._write = function (chunk, encoding, done) {23 console.log(chunk.toString());24 done();25 };26 process.stdin.pipe(writer);27}28import (29func main() {30 vm := otto.New()31 vm.Set("println", fmt.Println)32 vm.Set("print", fmt.Print)33 vm.Run(`34 var stream = require('stream');35 var duplex = new stream.Duplex;36 duplex._write = function (chunk, encoding, done) {37 this.push('beep ');38 done();39 };40 duplex._read = function () {41 this.push('boop');42 this.push(null);43 };44 duplex.pipe(process.stdout);45}46import (47func main() {48 vm := otto.New()49 vm.Set("println", fmt.Println)50 vm.Set("print", fmt.Print)51 vm.Run(`52 var stream = require('stream');53 var transform = new stream.Transform;54 transform._transform = function (chunk

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NewChanReader

Using AI Code Generation

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1import (2func main() {3 f, err := os.Open("test.txt")4 if err != nil {5 fmt.Println(err)6 }7 defer f.Close()8 stream := NewStream(f)9 c := make(chan byte)10 go stream.NewChanReader(c)11 for {12 if !ok {13 }14 fmt.Printf("%c", b)15 }16}

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NewChanReader

Using AI Code Generation

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1import (2func main() {3 ch := make(chan string)4 go func() {5 close(ch)6 }()7 r := strings.NewReader("Hello World")8 r = io.NewSectionReader(r, 0, 11)9 chReader := io.NewSectionReader(r, 0, 11)10 data := make([]byte, 11)11 chReader.Read(data)12 fmt.Println(string(data))13}14GoLang: io.Pipe() Method15GoLang: io.TeeReader() Method16GoLang: io.WriteString() Method17GoLang: io.WriteString() Method18GoLang: io.Copy() Method19GoLang: io.CopyN() Method20GoLang: io.CopyBuffer() Method21GoLang: io.MultiReader() Method22GoLang: io.MultiWriter() Method23GoLang: io.NopCloser() Method24GoLang: io.LimitReader() Method

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NewChanReader

Using AI Code Generation

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1func main() {2 stream := Stream.NewStream()3 ch := make(chan int, 5)4 reader := stream.NewChanReader(ch)5 fmt.Println(reader.Read())6}7func main() {8 stream := Stream.NewStream()9 ch := make(chan int, 5)10 writer := stream.NewChanWriter(ch)11 writer.Write(10)12 fmt.Println(<-ch)13}14func main() {15 stream := Stream.NewStream()16 ch := stream.NewChan()17 reader := stream.NewChanReader(ch)18 writer := stream.NewChanWriter(ch)19 writer.Write(10)20 fmt.Println(reader.Read())21}22func main() {23 stream := Stream.NewStream()24 ch := stream.NewChan()25 reader := stream.NewChanReader(ch)26 writer := stream.NewChanWriter(ch)27 ch1 := stream.NewChan()28 reader1 := stream.NewChanReader(ch1)29 writer1 := stream.NewChanWriter(ch1)30 writer.Write(10)31 writer1.Write(20)32 fmt.Println(reader.Read())33 fmt.Println(reader1.Read())34}35func main() {36 stream := Stream.NewStream()37 ch := stream.NewChan()38 reader := stream.NewChanReader(ch)

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NewChanReader

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1func main() {2 ch := make(chan string)3 s := stream.NewStream()4 go func() {5 for i := 0; i < 10; i++ {6 ch <- fmt.Sprintf("Hello world %d7 }8 close(ch)9 }()10 f, err := os.Create("test.txt")11 if err != nil {12 fmt.Println(err)13 }14 defer f.Close()15 r := s.NewChanReader(ch)16 _, err = io.Copy(f, r)17 if err != nil {18 fmt.Println(err)19 }20}21func main() {22 ch := make(chan string)23 s := stream.NewStream()24 go func() {25 for i := range ch {26 fmt.Println(i)27 }28 }()29 f, err := os.Open("test.txt")30 if err != nil {31 fmt.Println(err)32 }33 defer f.Close()34 w := s.NewChanWriter(ch)35 _, err = io.Copy(w, f)36 if err != nil {37 fmt.Println(err)38 }39}40func main() {41 ch1 := make(chan string)42 ch2 := make(chan string)43 s := stream.NewStream()44 go func() {45 for i := 0; i < 10; i++ {46 ch1 <- fmt.Sprintf("Hello world %d

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