libgo/go/net/parse_test.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package net
   6
   7 import (
   8         "bufio"
   9         "os"
  10         "runtime"
  11         "testing"
  12 )
  13
  14 func TestReadLine(t *testing.T) {
  15         // /etc/services file does not exist on android, plan9, windows.
  16         switch runtime.GOOS {
  17         case "android", "plan9", "windows":
  18                 t.Skipf("skipping test on %q", runtime.GOOS)
  19         }
  20         filename := "/etc/services" // a nice big file
  21
  22         fd, err := os.Open(filename)
  23         if err != nil {
  24                 t.Fatalf("open %s: %v", filename, err)
  25         }
  26         defer fd.Close()
  27         br := bufio.NewReader(fd)
  28
  29         file, err := open(filename)
  30         if file == nil {
  31                 t.Fatalf("net.open(%s) = nil", filename)
  32         }
  33         defer file.close()
  34
  35         lineno := 1
  36         byteno := 0
  37         for {
  38                 bline, berr := br.ReadString('\n')
  39                 if n := len(bline); n > 0 {
  40                         bline = bline[0 : n-1]
  41                 }
  42                 line, ok := file.readLine()
  43                 if (berr != nil) != !ok || bline != line {
  44                         t.Fatalf("%s:%d (#%d)\nbufio => %q, %v\nnet => %q, %v",
  45                                 filename, lineno, byteno, bline, berr, line, ok)
  46                 }
  47                 if !ok {
  48                         break
  49                 }
  50                 lineno++
  51                 byteno += len(line) + 1
  52         }
  53 }