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Source file src/net/pipe_test.go

Documentation: net

  // Copyright 2010 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package net
  
  import (
  	"bytes"
  	"io"
  	"testing"
  )
  
  func checkPipeWrite(t *testing.T, w io.Writer, data []byte, c chan int) {
  	n, err := w.Write(data)
  	if err != nil {
  		t.Error(err)
  	}
  	if n != len(data) {
  		t.Errorf("short write: %d != %d", n, len(data))
  	}
  	c <- 0
  }
  
  func checkPipeRead(t *testing.T, r io.Reader, data []byte, wantErr error) {
  	buf := make([]byte, len(data)+10)
  	n, err := r.Read(buf)
  	if err != wantErr {
  		t.Error(err)
  		return
  	}
  	if n != len(data) || !bytes.Equal(buf[0:n], data) {
  		t.Errorf("bad read: got %q", buf[0:n])
  		return
  	}
  }
  
  // TestPipe tests a simple read/write/close sequence.
  // Assumes that the underlying io.Pipe implementation
  // is solid and we're just testing the net wrapping.
  func TestPipe(t *testing.T) {
  	c := make(chan int)
  	cli, srv := Pipe()
  	go checkPipeWrite(t, cli, []byte("hello, world"), c)
  	checkPipeRead(t, srv, []byte("hello, world"), nil)
  	<-c
  	go checkPipeWrite(t, srv, []byte("line 2"), c)
  	checkPipeRead(t, cli, []byte("line 2"), nil)
  	<-c
  	go checkPipeWrite(t, cli, []byte("a third line"), c)
  	checkPipeRead(t, srv, []byte("a third line"), nil)
  	<-c
  	go srv.Close()
  	checkPipeRead(t, cli, nil, io.EOF)
  	cli.Close()
  }
  

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