91 lines
2.6 KiB
TypeScript
91 lines
2.6 KiB
TypeScript
/*
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* Copyright The OpenTelemetry Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import * as assert from 'assert';
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import * as sinon from 'sinon';
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import {
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Aggregation,
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AggregationTemporality,
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InstrumentType,
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MeterProvider,
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MetricReader,
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} from '../../src';
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import { TestMetricReader } from '../export/TestMetricReader';
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describe('cumulative-exponential-histogram', () => {
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let clock: sinon.SinonFakeTimers;
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beforeEach(() => {
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clock = sinon.useFakeTimers();
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});
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afterEach(() => {
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sinon.restore();
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});
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it('Cumulative Histogram should have the same startTime every collection', async () => {
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// Works fine and passes
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await doTest(Aggregation.Histogram());
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});
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it('Cumulative ExponentialHistogram should have the same startTime every collection', async () => {
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// Fails
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await doTest(Aggregation.ExponentialHistogram());
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});
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const doTest = async (histogramAggregation: Aggregation) => {
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const meterProvider = new MeterProvider();
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const reader = new TestMetricReader({
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aggregationTemporalitySelector() {
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return AggregationTemporality.CUMULATIVE;
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},
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aggregationSelector(type) {
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return type === InstrumentType.HISTOGRAM
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? histogramAggregation
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: Aggregation.Default();
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},
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});
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meterProvider.addMetricReader(reader);
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const meter = meterProvider.getMeter('my-meter');
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const hist = meter.createHistogram('testhist');
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hist.record(1);
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const resourceMetrics1 = await collectNoErrors(reader);
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const dataPoint1 =
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resourceMetrics1.scopeMetrics[0].metrics[0].dataPoints[0];
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clock.tick(1000);
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hist.record(2);
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const resourceMetrics2 = await collectNoErrors(reader);
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const dataPoint2 =
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resourceMetrics2.scopeMetrics[0].metrics[0].dataPoints[0];
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assert.deepStrictEqual(
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dataPoint1.startTime,
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dataPoint2.startTime,
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'The start time should be the same across cumulative collections'
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);
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};
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const collectNoErrors = async (reader: MetricReader) => {
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const { resourceMetrics, errors } = await reader.collect();
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assert.strictEqual(errors.length, 0);
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return resourceMetrics;
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};
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});
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