1// Copyright 2023 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 fs_test
6
7import (
8	. "io/fs"
9	"testing"
10	"time"
11)
12
13// formatTest implements FileInfo to test FormatFileInfo,
14// and implements DirEntry to test FormatDirEntry.
15type formatTest struct {
16	name    string
17	size    int64
18	mode    FileMode
19	modTime time.Time
20	isDir   bool
21}
22
23func (fs *formatTest) Name() string {
24	return fs.name
25}
26
27func (fs *formatTest) Size() int64 {
28	return fs.size
29}
30
31func (fs *formatTest) Mode() FileMode {
32	return fs.mode
33}
34
35func (fs *formatTest) ModTime() time.Time {
36	return fs.modTime
37}
38
39func (fs *formatTest) IsDir() bool {
40	return fs.isDir
41}
42
43func (fs *formatTest) Sys() any {
44	return nil
45}
46
47func (fs *formatTest) Type() FileMode {
48	return fs.mode.Type()
49}
50
51func (fs *formatTest) Info() (FileInfo, error) {
52	return fs, nil
53}
54
55var formatTests = []struct {
56	input        formatTest
57	wantFileInfo string
58	wantDirEntry string
59}{
60	{
61		formatTest{
62			name:    "hello.go",
63			size:    100,
64			mode:    0o644,
65			modTime: time.Date(1970, time.January, 1, 12, 0, 0, 0, time.UTC),
66			isDir:   false,
67		},
68		"-rw-r--r-- 100 1970-01-01 12:00:00 hello.go",
69		"- hello.go",
70	},
71	{
72		formatTest{
73			name:    "home/gopher",
74			size:    0,
75			mode:    ModeDir | 0o755,
76			modTime: time.Date(1970, time.January, 1, 12, 0, 0, 0, time.UTC),
77			isDir:   true,
78		},
79		"drwxr-xr-x 0 1970-01-01 12:00:00 home/gopher/",
80		"d home/gopher/",
81	},
82	{
83		formatTest{
84			name:    "big",
85			size:    0x7fffffffffffffff,
86			mode:    ModeIrregular | 0o644,
87			modTime: time.Date(1970, time.January, 1, 12, 0, 0, 0, time.UTC),
88			isDir:   false,
89		},
90		"?rw-r--r-- 9223372036854775807 1970-01-01 12:00:00 big",
91		"? big",
92	},
93	{
94		formatTest{
95			name:    "small",
96			size:    -0x8000000000000000,
97			mode:    ModeSocket | ModeSetuid | 0o644,
98			modTime: time.Date(1970, time.January, 1, 12, 0, 0, 0, time.UTC),
99			isDir:   false,
100		},
101		"Surw-r--r-- -9223372036854775808 1970-01-01 12:00:00 small",
102		"S small",
103	},
104}
105
106func TestFormatFileInfo(t *testing.T) {
107	for i, test := range formatTests {
108		got := FormatFileInfo(&test.input)
109		if got != test.wantFileInfo {
110			t.Errorf("%d: FormatFileInfo(%#v) = %q, want %q", i, test.input, got, test.wantFileInfo)
111		}
112	}
113}
114
115func TestFormatDirEntry(t *testing.T) {
116	for i, test := range formatTests {
117		got := FormatDirEntry(&test.input)
118		if got != test.wantDirEntry {
119			t.Errorf("%d: FormatDirEntry(%#v) = %q, want %q", i, test.input, got, test.wantDirEntry)
120		}
121	}
122
123}
124