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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { unitTest, assert, assertEquals } from "./test_util.ts";
unitTest(
{ perms: { read: true, write: true } },
function linkSyncSuccess(): void {
const testDir = Deno.makeTempDirSync();
const oldData = "Hardlink";
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
Deno.writeFileSync(oldName, new TextEncoder().encode(oldData));
// Create the hard link.
Deno.linkSync(oldName, newName);
// We should expect reading the same content.
const newData = new TextDecoder().decode(Deno.readFileSync(newName));
assertEquals(oldData, newData);
// Writing to newname also affects oldname.
const newData2 = "Modified";
Deno.writeFileSync(newName, new TextEncoder().encode(newData2));
assertEquals(
newData2,
new TextDecoder().decode(Deno.readFileSync(oldName))
);
// Writing to oldname also affects newname.
const newData3 = "ModifiedAgain";
Deno.writeFileSync(oldName, new TextEncoder().encode(newData3));
assertEquals(
newData3,
new TextDecoder().decode(Deno.readFileSync(newName))
);
// Remove oldname. File still accessible through newname.
Deno.removeSync(oldName);
const newNameStat = Deno.statSync(newName);
assert(newNameStat.isFile());
assert(!newNameStat.isSymlink()); // Not a symlink.
assertEquals(
newData3,
new TextDecoder().decode(Deno.readFileSync(newName))
);
}
);
unitTest(
{ perms: { read: true, write: true } },
function linkSyncExists(): void {
const testDir = Deno.makeTempDirSync();
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
Deno.writeFileSync(oldName, new TextEncoder().encode("oldName"));
// newname is already created.
Deno.writeFileSync(newName, new TextEncoder().encode("newName"));
let err;
try {
Deno.linkSync(oldName, newName);
} catch (e) {
err = e;
}
assert(!!err);
assert(err instanceof Deno.errors.AlreadyExists);
}
);
unitTest(
{ perms: { read: true, write: true } },
function linkSyncNotFound(): void {
const testDir = Deno.makeTempDirSync();
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
let err;
try {
Deno.linkSync(oldName, newName);
} catch (e) {
err = e;
}
assert(!!err);
assert(err instanceof Deno.errors.NotFound);
}
);
unitTest(
{ perms: { read: false, write: true } },
function linkSyncReadPerm(): void {
let err;
try {
Deno.linkSync("oldbaddir", "newbaddir");
} catch (e) {
err = e;
}
assert(err instanceof Deno.errors.PermissionDenied);
assertEquals(err.name, "PermissionDenied");
}
);
unitTest(
{ perms: { read: true, write: false } },
function linkSyncWritePerm(): void {
let err;
try {
Deno.linkSync("oldbaddir", "newbaddir");
} catch (e) {
err = e;
}
assert(err instanceof Deno.errors.PermissionDenied);
assertEquals(err.name, "PermissionDenied");
}
);
unitTest(
{ perms: { read: true, write: true } },
async function linkSuccess(): Promise<void> {
const testDir = Deno.makeTempDirSync();
const oldData = "Hardlink";
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
Deno.writeFileSync(oldName, new TextEncoder().encode(oldData));
// Create the hard link.
await Deno.link(oldName, newName);
// We should expect reading the same content.
const newData = new TextDecoder().decode(Deno.readFileSync(newName));
assertEquals(oldData, newData);
// Writing to newname also affects oldname.
const newData2 = "Modified";
Deno.writeFileSync(newName, new TextEncoder().encode(newData2));
assertEquals(
newData2,
new TextDecoder().decode(Deno.readFileSync(oldName))
);
// Writing to oldname also affects newname.
const newData3 = "ModifiedAgain";
Deno.writeFileSync(oldName, new TextEncoder().encode(newData3));
assertEquals(
newData3,
new TextDecoder().decode(Deno.readFileSync(newName))
);
// Remove oldname. File still accessible through newname.
Deno.removeSync(oldName);
const newNameStat = Deno.statSync(newName);
assert(newNameStat.isFile());
assert(!newNameStat.isSymlink()); // Not a symlink.
assertEquals(
newData3,
new TextDecoder().decode(Deno.readFileSync(newName))
);
}
);
|
