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nodejs/test/parallel/test-diagnostics-channel-tracing-channel-sync.js
Stephen Belanger fe751df537
lib: add tracing channel to diagnostics_channel
PR-URL: https://github.com/nodejs/node/pull/44943
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Bryan English <bryan@bryanenglish.com>
2023-03-31 17:40:30 +00:00

47 lines
1.3 KiB
JavaScript

'use strict';
const common = require('../common');
const dc = require('diagnostics_channel');
const assert = require('assert');
const channel = dc.tracingChannel('test');
const expectedResult = { foo: 'bar' };
const input = { foo: 'bar' };
const thisArg = { baz: 'buz' };
const arg = { baz: 'buz' };
function check(found) {
assert.strictEqual(found, input);
}
const handlers = {
start: common.mustCall(check),
end: common.mustCall((found) => {
check(found);
assert.strictEqual(found.result, expectedResult);
}),
asyncStart: common.mustNotCall(),
asyncEnd: common.mustNotCall(),
error: common.mustNotCall()
};
assert.strictEqual(channel.start.hasSubscribers, false);
channel.subscribe(handlers);
assert.strictEqual(channel.start.hasSubscribers, true);
const result1 = channel.traceSync(function(arg1) {
assert.strictEqual(arg1, arg);
assert.strictEqual(this, thisArg);
return expectedResult;
}, input, thisArg, arg);
assert.strictEqual(result1, expectedResult);
channel.unsubscribe(handlers);
assert.strictEqual(channel.start.hasSubscribers, false);
const result2 = channel.traceSync(function(arg1) {
assert.strictEqual(arg1, arg);
assert.strictEqual(this, thisArg);
return expectedResult;
}, input, thisArg, arg);
assert.strictEqual(result2, expectedResult);