parse_test.go

Documentation: net

     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("not supported on %s", runtime.GOOS)
    19  	}
    20  	filename := "/etc/services" // a nice big file
    21  
    22  	fd, err := os.Open(filename)
    23  	if err != nil {
    24  		t.Fatal(err)
    25  	}
    26  	defer fd.Close()
    27  	br := bufio.NewReader(fd)
    28  
    29  	file, err := open(filename)
    30  	if file == nil {
    31  		t.Fatal(err)
    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", filename, lineno, byteno, bline, berr, line, ok)
    45  		}
    46  		if !ok {
    47  			break
    48  		}
    49  		lineno++
    50  		byteno += len(line) + 1
    51  	}
    52  }
    53  
    54  func TestGoDebugString(t *testing.T) {
    55  	defer os.Setenv("GODEBUG", os.Getenv("GODEBUG"))
    56  	tests := []struct {
    57  		godebug string
    58  		key     string
    59  		want    string
    60  	}{
    61  		{"", "foo", ""},
    62  		{"foo=", "foo", ""},
    63  		{"foo=bar", "foo", "bar"},
    64  		{"foo=bar,", "foo", "bar"},
    65  		{"foo,foo=bar,", "foo", "bar"},
    66  		{"foo1=bar,foo=bar,", "foo", "bar"},
    67  		{"foo=bar,foo=bar,", "foo", "bar"},
    68  		{"foo=", "foo", ""},
    69  		{"foo", "foo", ""},
    70  		{",foo", "foo", ""},
    71  		{"foo=bar,baz", "loooooooong", ""},
    72  	}
    73  	for _, tt := range tests {
    74  		os.Setenv("GODEBUG", tt.godebug)
    75  		if got := goDebugString(tt.key); got != tt.want {
    76  			t.Errorf("for %q, goDebugString(%q) = %q; want %q", tt.godebug, tt.key, got, tt.want)
    77  		}
    78  	}
    79  }
    80  
    81  func TestDtoi(t *testing.T) {
    82  	for _, tt := range []struct {
    83  		in  string
    84  		out int
    85  		off int
    86  		ok  bool
    87  	}{
    88  		{"", 0, 0, false},
    89  		{"0", 0, 1, true},
    90  		{"65536", 65536, 5, true},
    91  		{"123456789", big, 8, false},
    92  		{"-0", 0, 0, false},
    93  		{"-1234", 0, 0, false},
    94  	} {
    95  		n, i, ok := dtoi(tt.in)
    96  		if n != tt.out || i != tt.off || ok != tt.ok {
    97  			t.Errorf("got %d, %d, %v; want %d, %d, %v", n, i, ok, tt.out, tt.off, tt.ok)
    98  		}
    99  	}
   100  }
   101
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