opentelemetry-dotnet/test/OpenTelemetry.Tests/Implementation/Metrics/MeterFactoryBaseTests.cs

93 lines
3.2 KiB
C#

// <copyright file="MeterFactoryBaseTests.cs" company="OpenTelemetry Authors">
// 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
//
// http://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.
// </copyright>
using System;
using OpenTelemetry.Metrics.Configuration;
using Xunit;
namespace OpenTelemetry.Metrics.Config.Test
{
public class MeterFactoryBaseTests : IDisposable
{
public MeterFactoryBaseTests()
{
MeterFactoryBase.Default.Reset();
}
[Fact]
public void MeterFactory_Default()
{
Assert.NotNull(MeterFactoryBase.Default);
var defaultMeter = MeterFactoryBase.Default.GetMeter(string.Empty);
Assert.NotNull(defaultMeter);
Assert.Same(defaultMeter, MeterFactoryBase.Default.GetMeter("named meter"));
var counter = defaultMeter.CreateDoubleCounter("ctr");
Assert.IsType<NoOpCounterMetric<double>>(counter);
}
[Fact]
public void MeterFactory_SetDefault()
{
var factory = MeterFactory.Create(b => { });
MeterFactoryBase.SetDefault(factory);
var defaultMeter = MeterFactoryBase.Default.GetMeter(string.Empty);
Assert.NotNull(defaultMeter);
Assert.IsType<MeterSdk>(defaultMeter);
Assert.NotSame(defaultMeter, MeterFactoryBase.Default.GetMeter("named meter"));
var counter = defaultMeter.CreateDoubleCounter("ctr");
Assert.IsType<DoubleCounterMetricSdk>(counter);
}
[Fact]
public void MeterFactory_SetDefaultNull()
{
Assert.Throws<ArgumentNullException>(() => MeterFactoryBase.SetDefault(null));
}
[Fact]
public void MeterFactory_SetDefaultTwice_Throws()
{
MeterFactoryBase.SetDefault(MeterFactory.Create(b => { }));
Assert.Throws<InvalidOperationException>(() => MeterFactoryBase.SetDefault(MeterFactory.Create(b => { })));
}
[Fact]
public void MeterFactory_UpdateDefault_CachedTracer()
{
var defaultMeter = MeterFactoryBase.Default.GetMeter(string.Empty);
var noOpCounter = defaultMeter.CreateDoubleCounter("ctr");
Assert.IsType<NoOpCounterMetric<double>>(noOpCounter);
MeterFactoryBase.SetDefault(MeterFactory.Create(b => { }));
var counter = defaultMeter.CreateDoubleCounter("ctr");
Assert.IsType<DoubleCounterMetricSdk>(counter);
var newdefaultMeter = MeterFactoryBase.Default.GetMeter(string.Empty);
Assert.NotSame(defaultMeter, newdefaultMeter);
Assert.IsType<MeterSdk>(newdefaultMeter);
}
public void Dispose()
{
MeterFactoryBase.Default.Reset();
}
}
}