92 lines
3.2 KiB
C#
92 lines
3.2 KiB
C#
// <copyright file="MeterProviderTests.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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using System;
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using Xunit;
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namespace OpenTelemetry.Metrics.Config.Test
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{
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public class MeterProviderTests : IDisposable
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{
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public MeterProviderTests()
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{
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MeterProvider.Default.Reset();
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}
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[Fact]
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public void MeterProvider_Default()
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{
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Assert.NotNull(MeterProvider.Default);
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var defaultMeter = MeterProvider.Default.GetMeter(string.Empty);
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Assert.NotNull(defaultMeter);
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Assert.Same(defaultMeter, MeterProvider.Default.GetMeter("named meter"));
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var counter = defaultMeter.CreateDoubleCounter("ctr");
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Assert.IsType<NoOpCounterMetric<double>>(counter);
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}
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[Fact]
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public void MeterProvider_SetDefault()
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{
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var meterProvider = Sdk.CreateMeterProvider(b => { });
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MeterProvider.SetDefault(meterProvider);
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var defaultMeter = MeterProvider.Default.GetMeter(string.Empty);
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Assert.NotNull(defaultMeter);
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Assert.IsType<MeterSdk>(defaultMeter);
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Assert.NotSame(defaultMeter, MeterProvider.Default.GetMeter("named meter"));
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var counter = defaultMeter.CreateDoubleCounter("ctr");
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Assert.IsType<DoubleCounterMetricSdk>(counter);
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}
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[Fact]
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public void MeterProvider_SetDefaultNull()
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{
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Assert.Throws<ArgumentNullException>(() => MeterProvider.SetDefault(null));
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}
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[Fact]
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public void MeterProvider_SetDefaultTwice_Throws()
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{
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MeterProvider.SetDefault(Sdk.CreateMeterProvider(b => { }));
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Assert.Throws<InvalidOperationException>(() => MeterProvider.SetDefault(Sdk.CreateMeterProvider(b => { })));
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}
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[Fact]
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public void MeterProvider_UpdateDefault_CachedTracer()
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{
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var defaultMeter = MeterProvider.Default.GetMeter(string.Empty);
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var noOpCounter = defaultMeter.CreateDoubleCounter("ctr");
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Assert.IsType<NoOpCounterMetric<double>>(noOpCounter);
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MeterProvider.SetDefault(Sdk.CreateMeterProvider(b => { }));
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var counter = defaultMeter.CreateDoubleCounter("ctr");
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Assert.IsType<DoubleCounterMetricSdk>(counter);
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var newdefaultMeter = MeterProvider.Default.GetMeter(string.Empty);
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Assert.NotSame(defaultMeter, newdefaultMeter);
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Assert.IsType<MeterSdk>(newdefaultMeter);
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}
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public void Dispose()
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{
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MeterProvider.Default.Reset();
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}
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}
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}
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