node/test/parallel/test-trace-events-dynamic-enable.js
James M Snell 8caa1dcee6 test: rely less on duplicative common test harness utilities
There are several cleanups here that are not just style nits...

1. The `common.isMainThread` was just a passthrough to the
   `isMainThread` export on the worker_thread module. It's
   use was inconsistent and just obfuscated the fact that
   the test file depend on the `worker_threads` built-in.
   By eliminating it we simplify the test harness a bit and
   make it clearer which tests depend on the worker_threads
   check.
2. The `common.isDumbTerminal` is fairly unnecesary since
   that just wraps a public API check.
3. Several of the `common.skipIf....` checks were inconsistently
   used and really don't need to be separate utility functions.

A key part of the motivation here is to work towards making more
of the tests more self-contained and less reliant on the common
test harness where possible.

PR-URL: https://github.com/nodejs/node/pull/56712
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
2025-01-25 07:23:09 +00:00

73 lines
1.7 KiB
JavaScript

// Flags: --expose-internals
'use strict';
const common = require('../common');
common.skipIfInspectorDisabled();
const { isMainThread } = require('worker_threads');
if (!isMainThread) {
// https://github.com/nodejs/node/issues/22767
common.skip('This test only works on a main thread');
}
const { internalBinding } = require('internal/test/binding');
const {
trace: {
TRACE_EVENT_PHASE_NESTABLE_ASYNC_BEGIN: kBeforeEvent
}
} = internalBinding('constants');
const { trace } = internalBinding('trace_events');
const assert = require('assert');
const { Session } = require('inspector');
const session = new Session();
function post(message, data) {
return new Promise((resolve, reject) => {
session.post(message, data, (err, result) => {
if (err)
reject(new Error(JSON.stringify(err)));
else
resolve(result);
});
});
}
async function test() {
session.connect();
const events = [];
let tracingComplete = false;
session.on('NodeTracing.dataCollected', (n) => {
assert.ok(n?.params?.value);
events.push(...n.params.value); // append the events.
});
session.on('NodeTracing.tracingComplete', () => tracingComplete = true);
trace(kBeforeEvent, 'foo', 'test1', 0, 'test');
const traceConfig = { includedCategories: ['foo'] };
await post('NodeTracing.start', { traceConfig });
trace(kBeforeEvent, 'foo', 'test2', 0, 'test');
trace(kBeforeEvent, 'bar', 'test3', 0, 'test');
await post('NodeTracing.stop', { traceConfig });
trace(kBeforeEvent, 'foo', 'test4', 0, 'test');
session.disconnect();
assert.ok(tracingComplete);
const marks = events.filter((t) => null !== /foo/.exec(t.cat));
assert.strictEqual(marks.length, 1);
assert.strictEqual(marks[0].name, 'test2');
}
test();