1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
// Copyright 2009 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 ioutil
import (
"os"
"testing"
)
func checkSize(t *testing.T, path string, size int64) {
dir, err := os.Stat(path)
if err != nil {
t.Fatalf("Stat %q (looking for size %d): %s", path, size, err)
}
if dir.Size() != size {
t.Errorf("Stat %q: size %d want %d", path, dir.Size(), size)
}
}
func TestReadFile(t *testing.T) {
filename := "rumpelstilzchen"
contents, err := ReadFile(filename)
if err == nil {
t.Fatalf("ReadFile %s: error expected, none found", filename)
}
filename = "ioutil_test.go"
contents, err = ReadFile(filename)
if err != nil {
t.Fatalf("ReadFile %s: %v", filename, err)
}
checkSize(t, filename, int64(len(contents)))
}
func TestWriteFile(t *testing.T) {
f, err := TempFile("", "ioutil-test")
if err != nil {
t.Fatal(err)
}
filename := f.Name()
data := "Programming today is a race between software engineers striving to " +
"build bigger and better idiot-proof programs, and the Universe trying " +
"to produce bigger and better idiots. So far, the Universe is winning."
if err := WriteFile(filename, []byte(data), 0644); err != nil {
t.Fatalf("WriteFile %s: %v", filename, err)
}
contents, err := ReadFile(filename)
if err != nil {
t.Fatalf("ReadFile %s: %v", filename, err)
}
if string(contents) != data {
t.Fatalf("contents = %q\nexpected = %q", string(contents), data)
}
// cleanup
f.Close()
os.Remove(filename) // ignore error
}
func TestReadDir(t *testing.T) {
dirname := "rumpelstilzchen"
_, err := ReadDir(dirname)
if err == nil {
t.Fatalf("ReadDir %s: error expected, none found", dirname)
}
dirname = ".."
list, err := ReadDir(dirname)
if err != nil {
t.Fatalf("ReadDir %s: %v", dirname, err)
}
foundFile := false
foundSubDir := false
for _, dir := range list {
switch {
case !dir.IsDir() && dir.Name() == "io_test.go":
foundFile = true
case dir.IsDir() && dir.Name() == "ioutil":
foundSubDir = true
}
}
if !foundFile {
t.Fatalf("ReadDir %s: io_test.go file not found", dirname)
}
if !foundSubDir {
t.Fatalf("ReadDir %s: ioutil directory not found", dirname)
}
}
|
