113 lines
4.1 KiB
C#
113 lines
4.1 KiB
C#
// <copyright file="InMemoryExporterMetricsExtensionsTests.cs" company="OpenTelemetry Authors">
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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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// http://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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// </copyright>
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#if NET6_0_OR_GREATER
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.Metrics;
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using System.Net;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.TestHost;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Hosting;
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using OpenTelemetry.Metrics;
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using OpenTelemetry.Tests;
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using Xunit;
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namespace OpenTelemetry.Extensions.Hosting.Tests
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{
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/// <summary>
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/// These tests verify that <see cref="InMemoryExporter"/> works with <see cref="IDeferredMeterProviderBuilder"/>.
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/// </summary>
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public class InMemoryExporterMetricsExtensionsTests
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{
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[Fact]
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public async Task DeferredMeterProviderBuilder_WithMetric()
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{
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var meterName = Utils.GetCurrentMethodName();
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var exportedItems = new List<Metric>();
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await RunMetricsTest(
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configure: builder => builder
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.AddMeter(meterName)
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.AddInMemoryExporter(exportedItems),
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testAction: () =>
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{
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using var meter = new Meter(meterName);
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var counter = meter.CreateCounter<long>("meter");
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counter.Add(10);
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}).ConfigureAwait(false);
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Assert.Single(exportedItems);
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var metricPointsEnumerator = exportedItems[0].GetMetricPoints().GetEnumerator();
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Assert.True(metricPointsEnumerator.MoveNext());
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Assert.Equal(10, metricPointsEnumerator.Current.GetSumLong());
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}
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[Fact]
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public async Task DeferredMeterProviderBuilder_WithMetricSnapshot()
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{
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var meterName = Utils.GetCurrentMethodName();
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var exportedItems = new List<MetricSnapshot>();
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await RunMetricsTest(
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configure: builder => builder
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.AddMeter(meterName)
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.AddInMemoryExporter(exportedItems),
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testAction: () =>
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{
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using var meter = new Meter(meterName);
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var counter = meter.CreateCounter<long>("meter");
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counter.Add(10);
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}).ConfigureAwait(false);
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Assert.Single(exportedItems);
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Assert.Equal(10, exportedItems[0].MetricPoints[0].GetSumLong());
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}
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private static async Task RunMetricsTest(Action<MeterProviderBuilder> configure, Action testAction)
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{
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using var host = await new HostBuilder()
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.ConfigureWebHost(webBuilder => webBuilder
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.UseTestServer()
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.ConfigureServices(services => services.AddOpenTelemetry().WithMetrics(configure).StartWithHost())
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.Configure(app => app.Run(httpContext =>
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{
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testAction.Invoke();
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var meterProvider = app.ApplicationServices.GetRequiredService<MeterProvider>();
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meterProvider.ForceFlush();
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return Task.CompletedTask;
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})))
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.StartAsync().ConfigureAwait(false);
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using var response = await host.GetTestClient().GetAsync($"/{nameof(RunMetricsTest)}").ConfigureAwait(false);
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Assert.Equal(HttpStatusCode.OK, response.StatusCode);
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await host.StopAsync().ConfigureAwait(false);
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}
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}
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}
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#endif
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