opentelemetry-dotnet/test/OpenTelemetry.Tests/Implementation/Metrics/Aggregators/LastValueAggregatorTest.cs

45 lines
1.5 KiB
C#

// <copyright file="LastValueAggregatorTest.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 OpenTelemetry.Metrics.Aggregators;
using OpenTelemetry.Metrics.Export;
using Xunit;
namespace OpenTelemetry.Metrics.Test
{
public class LastValueAggregatorTest
{
[Fact]
public void LastValueAggregatorAggregatesCorrectly()
{
// create an aggregator
var aggregator = new Int64LastValueAggregator();
var sum = aggregator.ToMetricData() as Int64SumData;
// we start with 0.
Assert.Equal(0, sum.Sum);
aggregator.Update(10);
aggregator.Update(20);
aggregator.Update(30);
aggregator.Update(40);
aggregator.Checkpoint();
sum = aggregator.ToMetricData() as Int64SumData;
Assert.Equal(40, sum.Sum);
}
}
}