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test-fs-watch-recursive.js
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test-fs-watch-recursive.js
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'use strict';
const common = require('../common');
const { setTimeout } = require('timers/promises');
if (common.isIBMi)
common.skip('IBMi does not support `fs.watch()`');
// fs-watch on folders have limited capability in AIX.
// The testcase makes use of folder watching, and causes
// hang. This behavior is documented. Skip this for AIX.
if (common.isAIX)
common.skip('folder watch capability is limited in AIX.');
const assert = require('assert');
const path = require('path');
const fs = require('fs');
const { pathToFileURL } = require('url');
const tmpdir = require('../common/tmpdir');
const testDir = tmpdir.path;
tmpdir.refresh();
(async () => {
// Add a file to already watching folder
const rootDirectory = fs.mkdtempSync(testDir + path.sep);
const testDirectory = path.join(rootDirectory, 'test-1');
fs.mkdirSync(testDirectory);
const testFile = path.join(testDirectory, 'file-1.txt');
const watcher = fs.watch(testDirectory, { recursive: true });
let watcherClosed = false;
watcher.on('change', function(event, filename) {
assert.ok(event === 'rename');
if (filename === path.basename(testFile)) {
watcher.close();
watcherClosed = true;
}
});
await setTimeout(common.platformTimeout(100));
fs.writeFileSync(testFile, 'world');
process.once('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
});
})().then(common.mustCall());
(async () => {
// Add a folder to already watching folder
const rootDirectory = fs.mkdtempSync(testDir + path.sep);
const testDirectory = path.join(rootDirectory, 'test-2');
fs.mkdirSync(testDirectory);
const testFile = path.join(testDirectory, 'folder-2');
const watcher = fs.watch(testDirectory, { recursive: true });
let watcherClosed = false;
watcher.on('change', function(event, filename) {
assert.ok(event === 'rename');
if (filename === path.basename(testFile)) {
watcher.close();
watcherClosed = true;
}
});
await setTimeout(common.platformTimeout(100));
fs.mkdirSync(testFile);
process.once('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
});
})().then(common.mustCall());
(async () => {
// Add a file to newly created folder to already watching folder
const rootDirectory = fs.mkdtempSync(testDir + path.sep);
const testDirectory = path.join(rootDirectory, 'test-3');
fs.mkdirSync(testDirectory);
const filePath = path.join(testDirectory, 'folder-3');
const childrenFile = 'file-4.txt';
const childrenAbsolutePath = path.join(filePath, childrenFile);
const childrenRelativePath = path.join(path.basename(filePath), childrenFile);
const watcher = fs.watch(testDirectory, { recursive: true });
let watcherClosed = false;
watcher.on('change', function(event, filename) {
assert.ok(event === 'rename');
assert.ok(filename === path.basename(filePath) || filename === childrenRelativePath);
if (filename === childrenRelativePath) {
watcher.close();
watcherClosed = true;
}
});
await setTimeout(common.platformTimeout(100));
fs.mkdirSync(filePath);
await setTimeout(common.platformTimeout(100));
fs.writeFileSync(childrenAbsolutePath, 'world');
process.once('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
});
})().then(common.mustCall());
(async () => {
// Add a file to subfolder of a watching folder
const rootDirectory = fs.mkdtempSync(testDir + path.sep);
const testDirectory = path.join(rootDirectory, 'test-4');
fs.mkdirSync(testDirectory);
const file = 'folder-5';
const filePath = path.join(testDirectory, file);
fs.mkdirSync(filePath);
const subfolderPath = path.join(filePath, 'subfolder-6');
fs.mkdirSync(subfolderPath);
const childrenFile = 'file-7.txt';
const childrenAbsolutePath = path.join(subfolderPath, childrenFile);
const relativePath = path.join(file, path.basename(subfolderPath), childrenFile);
const watcher = fs.watch(testDirectory, { recursive: true });
let watcherClosed = false;
watcher.on('change', function(event, filename) {
assert.ok(event === 'rename');
if (filename === relativePath) {
watcher.close();
watcherClosed = true;
}
});
await setTimeout(common.platformTimeout(100));
fs.writeFileSync(childrenAbsolutePath, 'world');
process.once('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
});
})().then(common.mustCall());
(async () => {
// Add a file to already watching folder, and use URL as the path
const rootDirectory = fs.mkdtempSync(testDir + path.sep);
const testDirectory = path.join(rootDirectory, 'test-5');
fs.mkdirSync(testDirectory);
const filePath = path.join(testDirectory, 'file-8.txt');
const url = pathToFileURL(testDirectory);
const watcher = fs.watch(url, { recursive: true });
let watcherClosed = false;
watcher.on('change', function(event, filename) {
assert.ok(event === 'rename');
if (filename === path.basename(filePath)) {
watcher.close();
watcherClosed = true;
}
});
await setTimeout(common.platformTimeout(100));
fs.writeFileSync(filePath, 'world');
process.on('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
});
})().then(common.mustCall());
(async () => {
// Watch a file (not a folder) using fs.watch
const rootDirectory = fs.mkdtempSync(testDir + path.sep);
const testDirectory = path.join(rootDirectory, 'test-6');
fs.mkdirSync(testDirectory);
const filePath = path.join(testDirectory, 'only-file.txt');
fs.writeFileSync(filePath, 'hello');
const watcher = fs.watch(filePath, { recursive: true });
let watcherClosed = false;
let interval;
watcher.on('change', function(event, filename) {
assert.ok(event === 'change');
if (filename === path.basename(filePath)) {
clearInterval(interval);
interval = null;
watcher.close();
watcherClosed = true;
}
});
interval = setInterval(() => {
fs.writeFileSync(filePath, 'world');
}, common.platformTimeout(10));
process.on('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
assert.ok(interval === null, 'interval should have been null');
});
})().then(common.mustCall());
(async () => {
// Assert recursive watch does not leak handles
const rootDirectory = fs.mkdtempSync(testDir + path.sep);
const testDirectory = path.join(rootDirectory, 'test-7');
const filePath = path.join(testDirectory, 'only-file.txt');
fs.mkdirSync(testDirectory);
let watcherClosed = false;
const watcher = fs.watch(testDirectory, { recursive: true });
watcher.on('change', common.mustCallAtLeast(async (event, filename) => {
await setTimeout(common.platformTimeout(100));
if (filename === path.basename(filePath)) {
watcher.close();
watcherClosed = true;
}
await setTimeout(common.platformTimeout(100));
assert(!process._getActiveHandles().some((handle) => handle.constructor.name === 'StatWatcher'));
}));
process.on('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
});
await setTimeout(common.platformTimeout(100));
fs.writeFileSync(filePath, 'content');
})().then(common.mustCall());
(async () => {
// Handle non-boolean values for options.recursive
if (!common.isWindows && !common.isOSX) {
assert.throws(() => {
const testsubdir = fs.mkdtempSync(testDir + path.sep);
fs.watch(testsubdir, { recursive: '1' });
}, {
code: 'ERR_INVALID_ARG_TYPE',
});
}
})().then(common.mustCall());