99 lines
3.5 KiB
C#
99 lines
3.5 KiB
C#
// <copyright file="MetricPointTests.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.Diagnostics.Metrics;
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using OpenTelemetry.Tests;
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using Xunit;
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namespace OpenTelemetry.Metrics.Tests
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{
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public sealed class MetricPointTests : IDisposable
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{
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private readonly Meter meter;
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private readonly MeterProvider provider;
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private readonly Metric metric;
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private readonly Histogram<long> histogram;
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private readonly double[] bounds;
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private MetricPoint metricPoint;
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public MetricPointTests()
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{
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this.meter = new Meter(Utils.GetCurrentMethodName());
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this.histogram = this.meter.CreateHistogram<long>("histogram");
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// Evenly distribute the bound values over the range [0, MaxValue)
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this.bounds = new double[10];
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for (int i = 0; i < this.bounds.Length; i++)
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{
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this.bounds[i] = i * 1000 / this.bounds.Length;
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}
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var exportedItems = new List<Metric>();
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this.provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(this.meter.Name)
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.AddInMemoryExporter(exportedItems)
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.AddView(this.histogram.Name, new ExplicitBucketHistogramConfiguration() { Boundaries = this.bounds })
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.Build();
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this.histogram.Record(500);
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this.provider.ForceFlush();
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this.metric = exportedItems[0];
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var metricPointsEnumerator = this.metric.GetMetricPoints().GetEnumerator();
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metricPointsEnumerator.MoveNext();
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this.metricPoint = metricPointsEnumerator.Current;
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}
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public void Dispose()
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{
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this.meter?.Dispose();
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this.provider?.Dispose();
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}
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[Fact]
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public void VerifyMetricPointCopy()
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{
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var copy = this.metricPoint.Copy();
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// Verify these structs are unique instances.
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Assert.NotEqual(copy, this.metricPoint);
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// Verify properties are copied.
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Assert.Equal(copy.Tags, this.metricPoint.Tags);
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Assert.Equal(copy.StartTime, this.metricPoint.StartTime);
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Assert.Equal(copy.EndTime, this.metricPoint.EndTime);
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}
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[Fact]
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public void VerifyHistogramBucketsCopy()
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{
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var histogramBuckets = this.metricPoint.GetHistogramBuckets();
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var copy = histogramBuckets.Copy();
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// Verify these are unique instances.
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Assert.False(ReferenceEquals(copy, histogramBuckets));
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Assert.NotSame(copy, histogramBuckets);
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// Verify fields are copied
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Assert.NotSame(copy.SnapshotBucketCounts, histogramBuckets.SnapshotBucketCounts);
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Assert.Equal(copy.SnapshotBucketCounts, histogramBuckets.SnapshotBucketCounts);
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Assert.Equal(copy.SnapshotSum, histogramBuckets.SnapshotSum);
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}
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}
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}
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