opentelemetry-js/packages/opentelemetry-core/test/common/anchored-clock.test.ts

30 lines
1014 B
TypeScript

/*
* Copyright The OpenTelemetry Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as assert from 'assert';
import { AnchoredClock, otperformance } from '../../src';
describe('AnchoredClock', () => {
it('should keep time', done => {
const clock = new AnchoredClock(Date, otperformance);
setTimeout(() => {
// after about 100ms, the clocks are within 10ms of each other
assert.ok(Math.abs(Date.now() - clock.now()) < 10);
done();
}, 100);
});
});