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
|
'use strict';
const common = require('../common');
if (common.isIBMi)
common.skip('IBMi does not support `fs.watch()`');
// Tests if `filename` is provided to watcher on supported platforms
const fs = require('fs');
const assert = require('assert');
const { join } = require('path');
class WatchTestCase {
constructor(shouldInclude, dirName, fileName, field) {
this.dirName = dirName;
this.fileName = fileName;
this.field = field;
this.shouldSkip = !shouldInclude;
}
get dirPath() { return join(tmpdir.path, this.dirName); }
get filePath() { return join(this.dirPath, this.fileName); }
}
const cases = [
// Watch on a file should callback with a filename on supported systems
new WatchTestCase(
common.isLinux || common.isOSX || common.isWindows || common.isAIX,
'watch1',
'foo',
'filePath'
),
// Watch on a directory should callback with a filename on supported systems
new WatchTestCase(
common.isLinux || common.isOSX || common.isWindows,
'watch2',
'bar',
'dirPath'
),
];
const tmpdir = require('../common/tmpdir');
tmpdir.refresh();
for (const testCase of cases) {
if (testCase.shouldSkip) continue;
fs.mkdirSync(testCase.dirPath);
// Long content so it's actually flushed.
const content1 = Date.now() + testCase.fileName.toLowerCase().repeat(1e4);
fs.writeFileSync(testCase.filePath, content1);
let interval;
const pathToWatch = testCase[testCase.field];
const watcher = fs.watch(pathToWatch);
watcher.on('error', (err) => {
if (interval) {
clearInterval(interval);
interval = null;
}
assert.fail(err);
});
watcher.on('close', common.mustCall(() => {
watcher.close(); // Closing a closed watcher should be a noop
}));
watcher.on('change', common.mustCall(function(eventType, argFilename) {
if (interval) {
clearInterval(interval);
interval = null;
}
if (common.isOSX)
assert.strictEqual(['rename', 'change'].includes(eventType), true);
else
assert.strictEqual(eventType, 'change');
assert.strictEqual(argFilename, testCase.fileName);
watcher.close();
// We document that watchers cannot be used anymore when it's closed,
// here we turn the methods into noops instead of throwing
watcher.close(); // Closing a closed watcher should be a noop
}));
// Long content so it's actually flushed. toUpperCase so there's real change.
const content2 = Date.now() + testCase.fileName.toUpperCase().repeat(1e4);
interval = setInterval(() => {
fs.writeFileSync(testCase.filePath, '');
fs.writeFileSync(testCase.filePath, content2);
}, 100);
}
[false, 1, {}, [], null, undefined].forEach((input) => {
assert.throws(
() => fs.watch(input, common.mustNotCall()),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError'
}
);
});
|
