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1// Copyright Joyent, Inc. and other Node contributors.
2//
3// Permission is hereby granted, free of charge, to any person obtaining a
4// copy of this software and associated documentation files (the
5// "Software"), to deal in the Software without restriction, including
6// without limitation the rights to use, copy, modify, merge, publish,
7// distribute, sublicense, and/or sell copies of the Software, and to permit
8// persons to whom the Software is furnished to do so, subject to the
9// following conditions:
10//
11// The above copyright notice and this permission notice shall be included
12// in all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20// USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22'use strict';
23const common = require('../common');
24if (common.isIBMi)
25  common.skip('IBMi does not support fs.watch()');
26
27const assert = require('assert');
28const fs = require('fs');
29const path = require('path');
30
31const tmpdir = require('../common/tmpdir');
32
33if (!common.isMainThread)
34  common.skip('process.chdir is not available in Workers');
35
36const expectFilePath = common.isWindows ||
37                       common.isLinux ||
38                       common.isOSX ||
39                       common.isAIX;
40
41const testDir = tmpdir.path;
42
43tmpdir.refresh();
44
45{
46  const filepath = path.join(testDir, 'watch.txt');
47
48  fs.writeFileSync(filepath, 'hello');
49
50  const watcher = fs.watch(filepath);
51  watcher.on('change', common.mustCall(function(event, filename) {
52    assert.strictEqual(event, 'change');
53
54    if (expectFilePath) {
55      assert.strictEqual(filename, 'watch.txt');
56    }
57    watcher.close();
58  }));
59
60  setImmediate(function() {
61    fs.writeFileSync(filepath, 'world');
62  });
63}
64
65{
66  const filepathAbs = path.join(testDir, 'hasOwnProperty');
67
68  process.chdir(testDir);
69
70  fs.writeFileSync(filepathAbs, 'howdy');
71
72  const watcher =
73    fs.watch('hasOwnProperty', common.mustCall(function(event, filename) {
74      assert.strictEqual(event, 'change');
75
76      if (expectFilePath) {
77        assert.strictEqual(filename, 'hasOwnProperty');
78      }
79      watcher.close();
80    }));
81
82  setImmediate(function() {
83    fs.writeFileSync(filepathAbs, 'pardner');
84  });
85}
86
87{
88  const testsubdir = fs.mkdtempSync(testDir + path.sep);
89  const filepath = path.join(testsubdir, 'newfile.txt');
90
91  const watcher =
92    fs.watch(testsubdir, common.mustCall(function(event, filename) {
93      const renameEv = common.isSunOS || common.isAIX ? 'change' : 'rename';
94      assert.strictEqual(event, renameEv);
95      if (expectFilePath) {
96        assert.strictEqual(filename, 'newfile.txt');
97      } else {
98        assert.strictEqual(filename, null);
99      }
100      watcher.close();
101    }));
102
103  setImmediate(function() {
104    const fd = fs.openSync(filepath, 'w');
105    fs.closeSync(fd);
106  });
107
108}
109
110// https://github.com/joyent/node/issues/2293 - non-persistent watcher should
111// not block the event loop
112{
113  fs.watch(__filename, { persistent: false }, common.mustNotCall());
114}
115
116// Whitebox test to ensure that wrapped FSEvent is safe
117// https://github.com/joyent/node/issues/6690
118{
119  let oldhandle;
120  common.expectsInternalAssertion(
121    () => {
122      const w = fs.watch(__filename, common.mustNotCall());
123      oldhandle = w._handle;
124      w._handle = { close: w._handle.close };
125      w.close();
126    },
127    'handle must be a FSEvent'
128  );
129  oldhandle.close(); // clean up
130}
131