/
noop-meter.test.ts
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/
noop-meter.test.ts
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/*
* 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 {
NoopMeterProvider,
NOOP_BOUND_COUNTER,
NOOP_BOUND_VALUE_RECORDER,
NOOP_COUNTER_METRIC,
NOOP_VALUE_RECORDER_METRIC,
} from '../../src';
describe('NoopMeter', () => {
it('should not crash', () => {
const meter = new NoopMeterProvider().getMeter('test-noop');
const counter = meter.createCounter('some-name');
const labels = {};
// ensure NoopMetric does not crash.
counter.bind(labels).add(1);
counter.unbind(labels);
// ensure the correct noop const is returned
assert.strictEqual(counter, NOOP_COUNTER_METRIC);
assert.strictEqual(counter.bind(labels), NOOP_BOUND_COUNTER);
counter.clear();
const valueRecorder = meter.createValueRecorder('some-name');
valueRecorder.bind(labels).record(1);
// ensure the correct noop const is returned
assert.strictEqual(valueRecorder, NOOP_VALUE_RECORDER_METRIC);
assert.strictEqual(valueRecorder.bind(labels), NOOP_BOUND_VALUE_RECORDER);
const options = {
component: 'tests',
description: 'the testing package',
};
const valueRecorderWithOptions = meter.createValueRecorder(
'some-name',
options
);
assert.strictEqual(valueRecorderWithOptions, NOOP_VALUE_RECORDER_METRIC);
const counterWithOptions = meter.createCounter('some-name', options);
assert.strictEqual(counterWithOptions, NOOP_COUNTER_METRIC);
});
});