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test-statwatcher.js
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108 lines (91 loc) · 3.63 KB
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'use strict';
const common = require('../common');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const initHooks = require('./init-hooks');
const { checkInvocations } = require('./hook-checks');
const fs = require('fs');
const { isMainThread } = require('worker_threads');
if (!isMainThread) {
common.skip('Worker bootstrapping works differently -> different async IDs');
}
tmpdir.refresh();
const file1 = tmpdir.resolve('file1');
const file2 = tmpdir.resolve('file2');
const onchangex = (x) => (curr, prev) => {
console.log(`Watcher: ${x}`);
console.log('current stat data:', curr);
console.log('previous stat data:', prev);
};
const checkWatcherStart = (name, watcher) => {
assert.strictEqual(watcher.type, 'STATWATCHER');
assert.strictEqual(typeof watcher.uid, 'number');
assert.strictEqual(watcher.triggerAsyncId, 1);
checkInvocations(watcher, { init: 1 },
`${name}: when started to watch file`);
};
const hooks = initHooks();
hooks.enable();
// Install first file watcher.
const w1 = fs.watchFile(file1, { interval: 10 }, onchangex('w1'));
let as = hooks.activitiesOfTypes('STATWATCHER');
assert.strictEqual(as.length, 1);
// Count all change events to account for all of them in checkInvocations.
let w1HookCount = 0;
w1.on('change', () => w1HookCount++);
const statwatcher1 = as[0];
checkWatcherStart('watcher1', statwatcher1);
// Install second file watcher
const w2 = fs.watchFile(file2, { interval: 10 }, onchangex('w2'));
as = hooks.activitiesOfTypes('STATWATCHER');
assert.strictEqual(as.length, 2);
// Count all change events to account for all of them in checkInvocations.
let w2HookCount = 0;
w2.on('change', () => w2HookCount++);
const statwatcher2 = as[1];
checkInvocations(statwatcher1, { init: 1 },
'watcher1: when started to watch second file');
checkWatcherStart('watcher2', statwatcher2);
setTimeout(() => fs.writeFileSync(file1, 'foo++'),
common.platformTimeout(100));
w1.on('change', common.mustCallAtLeast((curr, prev) => {
console.log('w1 change to', curr, 'from', prev);
// Wait until we get the write above.
if (prev.size !== 0 || curr.size !== 5)
return;
setImmediate(() => {
checkInvocations(statwatcher1,
{ init: 1, before: w1HookCount, after: w1HookCount },
'watcher1: when unwatched first file');
checkInvocations(statwatcher2, { init: 1 },
'watcher2: when unwatched first file');
setTimeout(() => fs.writeFileSync(file2, 'bar++'),
common.platformTimeout(100));
w2.on('change', common.mustCallAtLeast((curr, prev) => {
console.log('w2 change to', curr, 'from', prev);
// Wait until we get the write above.
if (prev.size !== 0 || curr.size !== 5)
return;
setImmediate(() => {
checkInvocations(statwatcher1,
{ init: 1, before: w1HookCount, after: w1HookCount },
'watcher1: when unwatched second file');
checkInvocations(statwatcher2,
{ init: 1, before: w2HookCount, after: w2HookCount },
'watcher2: when unwatched second file');
fs.unwatchFile(file1);
fs.unwatchFile(file2);
});
}));
});
}));
process.once('exit', () => {
hooks.disable();
hooks.sanityCheck('STATWATCHER');
checkInvocations(statwatcher1,
{ init: 1, before: w1HookCount, after: w1HookCount },
'watcher1: when process exits');
checkInvocations(statwatcher2,
{ init: 1, before: w2HookCount, after: w2HookCount },
'watcher2: when process exits');
});