opentelemetry-js/experimental/packages/api-events/test/api/api.test.ts

72 lines
2.5 KiB
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 { EventLogger, events } from '../../src';
import { NoopEventLogger } from '../../src/NoopEventLogger';
import { NoopEventLoggerProvider } from '../../src/NoopEventLoggerProvider';
describe('API', () => {
const dummyEventLogger = new NoopEventLogger();
it('should expose a event logger provider via getEventLoggerProvider', () => {
const provider = events.getEventLoggerProvider();
assert.ok(provider);
assert.strictEqual(typeof provider, 'object');
});
describe('GlobalEventLoggerProvider', () => {
beforeEach(() => {
events.disable();
});
it('should use the global event logger provider', () => {
events.setGlobalEventLoggerProvider(new TestEventLoggerProvider());
const eventLogger = events
.getEventLoggerProvider()
.getEventLogger('name');
assert.deepStrictEqual(eventLogger, dummyEventLogger);
});
it('should not allow overriding global provider if already set', () => {
const provider1 = new TestEventLoggerProvider();
const provider2 = new TestEventLoggerProvider();
events.setGlobalEventLoggerProvider(provider1);
assert.equal(events.getEventLoggerProvider(), provider1);
events.setGlobalEventLoggerProvider(provider2);
assert.equal(events.getEventLoggerProvider(), provider1);
});
});
describe('getEventLogger', () => {
beforeEach(() => {
events.disable();
});
it('should return a event logger instance from global provider', () => {
events.setGlobalEventLoggerProvider(new TestEventLoggerProvider());
const eventLogger = events.getEventLogger('myEventLogger');
assert.deepStrictEqual(eventLogger, dummyEventLogger);
});
});
class TestEventLoggerProvider extends NoopEventLoggerProvider {
override getEventLogger(): EventLogger {
return dummyEventLogger;
}
}
});