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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-trace-events-console.js |
'use strict';
const common = require('../common');
const assert = require('assert');
const cp = require('child_process');
const path = require('path');
const fs = require('fs');
const tmpdir = require('../common/tmpdir');
// Tests that node.console trace events for counters and time methods are
// emitted as expected.
const names = [
'time::foo',
'count::bar',
];
const expectedCounts = [ 1, 2, 0 ];
const expectedTimeTypes = [ 'b', 'n', 'e' ];
if (process.argv[2] === 'child') {
// The following console outputs exercise the test, causing node.console
// trace events to be emitted for the counter and time calls.
console.count('bar');
console.count('bar');
console.countReset('bar');
console.time('foo');
setImmediate(() => {
console.timeLog('foo');
setImmediate(() => {
console.timeEnd('foo');
});
});
} else {
tmpdir.refresh();
const proc = cp.fork(__filename,
[ 'child' ], {
cwd: tmpdir.path,
execArgv: [
'--trace-event-categories',
'node.console',
]
});
proc.once('exit', common.mustCall(async () => {
const file = path.join(tmpdir.path, 'node_trace.1.log');
assert(fs.existsSync(file));
const data = await fs.promises.readFile(file, { encoding: 'utf8' });
JSON.parse(data).traceEvents
.filter((trace) => trace.cat !== '__metadata')
.forEach((trace) => {
assert.strictEqual(trace.pid, proc.pid);
assert(names.includes(trace.name));
if (trace.name === 'count::bar')
assert.strictEqual(trace.args.data, expectedCounts.shift());
else if (trace.name === 'time::foo')
assert.strictEqual(trace.ph, expectedTimeTypes.shift());
});
assert.strictEqual(expectedCounts.length, 0);
assert.strictEqual(expectedTimeTypes.length, 0);
}));
}
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