node/test/parallel/test-trace-events-async-hooks.js
Richard Lau 23f8b7d334 test: enable trace-events tests for workers
Use the `cwd` option for `child_process` instead of `process.chdir()`
to enable the trace events tests to run on workers.

PR-URL: https://github.com/nodejs/node/pull/23698
Refs: https://github.com/nodejs/node/pull/23674#discussion_r225335819
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
2018-10-19 07:22:54 +02:00

67 lines
2.0 KiB
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const cp = require('child_process');
const fs = require('fs');
const path = require('path');
const util = require('util');
const CODE =
'setTimeout(() => { for (var i = 0; i < 100000; i++) { "test" + i } }, 1)';
const tmpdir = require('../common/tmpdir');
tmpdir.refresh();
const FILE_NAME = path.join(tmpdir.path, 'node_trace.1.log');
const proc = cp.spawn(process.execPath,
[ '--trace-event-categories', 'node.async_hooks',
'-e', CODE ],
{ cwd: tmpdir.path });
proc.once('exit', common.mustCall(() => {
assert(fs.existsSync(FILE_NAME));
fs.readFile(FILE_NAME, common.mustCall((err, data) => {
const traces = JSON.parse(data.toString()).traceEvents;
assert(traces.length > 0);
// V8 trace events should be generated.
assert(!traces.some((trace) => {
if (trace.pid !== proc.pid)
return false;
if (trace.cat !== 'v8')
return false;
if (trace.name !== 'V8.ScriptCompiler')
return false;
return true;
}));
// C++ async_hooks trace events should be generated.
assert(traces.some((trace) => {
if (trace.pid !== proc.pid)
return false;
if (trace.cat !== 'node,node.async_hooks')
return false;
return true;
}));
// JavaScript async_hooks trace events should be generated.
assert(traces.some((trace) => {
if (trace.pid !== proc.pid)
return false;
if (trace.cat !== 'node,node.async_hooks')
return false;
if (trace.name !== 'Timeout')
return false;
return true;
}));
// Check args in init events
const initEvents = traces.filter((trace) => {
return (trace.ph === 'b' && !trace.name.includes('_CALLBACK'));
});
assert.ok(initEvents.every((trace) => {
return (trace.args.data.executionAsyncId > 0 &&
trace.args.data.triggerAsyncId > 0);
}), `Unexpected initEvents format: ${util.inspect(initEvents)}`);
}));
}));