node/test/parallel/test-trace-events-none.js

28 lines
822 B
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const cp = require('child_process');
const fs = require('fs');
const CODE =
'setTimeout(() => { for (let i = 0; i < 100000; i++) { "test" + i } }, 1)';
const tmpdir = require('../common/tmpdir');
tmpdir.refresh();
const FILE_NAME = tmpdir.resolve('node_trace.1.log');
const proc_no_categories = cp.spawn(
process.execPath,
[ '--trace-event-categories', '""', '-e', CODE ],
{ cwd: tmpdir.path }
);
proc_no_categories.once('exit', common.mustCall(() => {
assert(fs.existsSync(FILE_NAME));
// Only __metadata categories should have been emitted.
fs.readFile(FILE_NAME, common.mustCall((err, data) => {
assert.ok(JSON.parse(data.toString()).traceEvents.every(
(trace) => trace.cat === '__metadata'));
}));
}));