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
5package net
6
7import (
8	"bufio"
9	"os"
10	"runtime"
11	"testing"
12)
13
14func TestReadLine(t *testing.T) {
15	// /etc/services file does not exist on android, plan9, windows, or wasip1
16	// where it would be required to be mounted from the host file system.
17	switch runtime.GOOS {
18	case "android", "plan9", "windows", "wasip1":
19		t.Skipf("not supported on %s", runtime.GOOS)
20	}
21	filename := "/etc/services" // a nice big file
22
23	fd, err := os.Open(filename)
24	if err != nil {
25		// The file is missing even on some Unix systems.
26		t.Skipf("skipping because failed to open /etc/services: %v", err)
27	}
28	defer fd.Close()
29	br := bufio.NewReader(fd)
30
31	file, err := open(filename)
32	if file == nil {
33		t.Fatal(err)
34	}
35	defer file.close()
36
37	lineno := 1
38	byteno := 0
39	for {
40		bline, berr := br.ReadString('\n')
41		if n := len(bline); n > 0 {
42			bline = bline[0 : n-1]
43		}
44		line, ok := file.readLine()
45		if (berr != nil) != !ok || bline != line {
46			t.Fatalf("%s:%d (#%d)\nbufio => %q, %v\nnet => %q, %v", filename, lineno, byteno, bline, berr, line, ok)
47		}
48		if !ok {
49			break
50		}
51		lineno++
52		byteno += len(line) + 1
53	}
54}
55
56func TestDtoi(t *testing.T) {
57	for _, tt := range []struct {
58		in  string
59		out int
60		off int
61		ok  bool
62	}{
63		{"", 0, 0, false},
64		{"0", 0, 1, true},
65		{"65536", 65536, 5, true},
66		{"123456789", big, 8, false},
67		{"-0", 0, 0, false},
68		{"-1234", 0, 0, false},
69	} {
70		n, i, ok := dtoi(tt.in)
71		if n != tt.out || i != tt.off || ok != tt.ok {
72			t.Errorf("got %d, %d, %v; want %d, %d, %v", n, i, ok, tt.out, tt.off, tt.ok)
73		}
74	}
75}
76