387 lines
16 KiB
C#
387 lines
16 KiB
C#
// <copyright file="PrometheusSerializerTests.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.Collections.Generic;
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using System.Diagnostics.Metrics;
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using System.Text;
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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.Exporter.Prometheus.Tests
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{
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public sealed class PrometheusSerializerTests
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{
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[Fact]
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public void GaugeZeroDimension()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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meter.CreateObservableGauge("test_gauge", () => 123);
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_gauge gauge\n"
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+ "test_gauge 123 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void GaugeZeroDimensionWithDescription()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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meter.CreateObservableGauge("test_gauge", () => 123, description: "Hello, world!");
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# HELP test_gauge Hello, world!\n"
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+ "# TYPE test_gauge gauge\n"
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+ "test_gauge 123 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void GaugeZeroDimensionWithUnit()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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meter.CreateObservableGauge("test_gauge", () => 123, unit: "seconds");
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_gauge_seconds gauge\n"
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+ "test_gauge_seconds 123 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void GaugeOneDimension()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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var counter = meter.CreateCounter<long>("test_counter");
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counter.Add(123, new KeyValuePair<string, object>("tagKey", "tagValue"));
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_counter counter\n"
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+ "test_counter{tagKey='tagValue'} 123 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void GaugeDoubleSubnormal()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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meter.CreateObservableGauge("test_gauge", () => new List<Measurement<double>>
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{
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new(double.NegativeInfinity, new("x", "1"), new("y", "2")),
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new(double.PositiveInfinity, new("x", "3"), new("y", "4")),
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new(double.NaN, new("x", "5"), new("y", "6")),
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});
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_gauge gauge\n"
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+ "test_gauge{x='1',y='2'} -Inf \\d+\n"
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+ "test_gauge{x='3',y='4'} \\+Inf \\d+\n"
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+ "test_gauge{x='5',y='6'} Nan \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void SumDoubleInfinites()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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var counter = meter.CreateCounter<double>("test_counter");
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counter.Add(1.0E308);
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counter.Add(1.0E308);
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_counter counter\n"
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+ "test_counter \\+Inf \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void HistogramZeroDimension()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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var histogram = meter.CreateHistogram<double>("test_histogram");
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histogram.Record(18);
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histogram.Record(100);
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_histogram histogram\n"
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+ "test_histogram_bucket{le='0'} 0 \\d+\n"
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+ "test_histogram_bucket{le='5'} 0 \\d+\n"
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+ "test_histogram_bucket{le='10'} 0 \\d+\n"
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+ "test_histogram_bucket{le='25'} 1 \\d+\n"
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+ "test_histogram_bucket{le='50'} 1 \\d+\n"
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+ "test_histogram_bucket{le='75'} 1 \\d+\n"
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+ "test_histogram_bucket{le='100'} 2 \\d+\n"
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+ "test_histogram_bucket{le='250'} 2 \\d+\n"
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+ "test_histogram_bucket{le='500'} 2 \\d+\n"
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+ "test_histogram_bucket{le='1000'} 2 \\d+\n"
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+ "test_histogram_bucket{le='\\+Inf'} 2 \\d+\n"
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+ "test_histogram_sum 118 \\d+\n"
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+ "test_histogram_count 2 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void HistogramOneDimension()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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var histogram = meter.CreateHistogram<double>("test_histogram");
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histogram.Record(18, new KeyValuePair<string, object>("x", "1"));
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histogram.Record(100, new KeyValuePair<string, object>("x", "1"));
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_histogram histogram\n"
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+ "test_histogram_bucket{x='1',le='0'} 0 \\d+\n"
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+ "test_histogram_bucket{x='1',le='5'} 0 \\d+\n"
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+ "test_histogram_bucket{x='1',le='10'} 0 \\d+\n"
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+ "test_histogram_bucket{x='1',le='25'} 1 \\d+\n"
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+ "test_histogram_bucket{x='1',le='50'} 1 \\d+\n"
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+ "test_histogram_bucket{x='1',le='75'} 1 \\d+\n"
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+ "test_histogram_bucket{x='1',le='100'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',le='250'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',le='500'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',le='1000'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',le='\\+Inf'} 2 \\d+\n"
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+ "test_histogram_sum{x='1'} 118 \\d+\n"
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+ "test_histogram_count{x='1'} 2 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void HistogramTwoDimensions()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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var histogram = meter.CreateHistogram<double>("test_histogram");
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histogram.Record(18, new("x", "1"), new("y", "2"));
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histogram.Record(100, new("x", "1"), new("y", "2"));
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_histogram histogram\n"
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+ "test_histogram_bucket{x='1',y='2',le='0'} 0 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='5'} 0 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='10'} 0 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='25'} 1 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='50'} 1 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='75'} 1 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='100'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='250'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='500'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='1000'} 2 \\d+\n"
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+ "test_histogram_bucket{x='1',y='2',le='\\+Inf'} 2 \\d+\n"
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+ "test_histogram_sum{x='1',y='2'} 118 \\d+\n"
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+ "test_histogram_count{x='1',y='2'} 2 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void HistogramInfinites()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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var histogram = meter.CreateHistogram<double>("test_histogram");
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histogram.Record(18);
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histogram.Record(double.PositiveInfinity);
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histogram.Record(double.PositiveInfinity);
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_histogram histogram\n"
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+ "test_histogram_bucket{le='0'} 0 \\d+\n"
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+ "test_histogram_bucket{le='5'} 0 \\d+\n"
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+ "test_histogram_bucket{le='10'} 0 \\d+\n"
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+ "test_histogram_bucket{le='25'} 1 \\d+\n"
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+ "test_histogram_bucket{le='50'} 1 \\d+\n"
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+ "test_histogram_bucket{le='75'} 1 \\d+\n"
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+ "test_histogram_bucket{le='100'} 1 \\d+\n"
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+ "test_histogram_bucket{le='250'} 1 \\d+\n"
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+ "test_histogram_bucket{le='500'} 1 \\d+\n"
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+ "test_histogram_bucket{le='1000'} 1 \\d+\n"
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+ "test_histogram_bucket{le='\\+Inf'} 3 \\d+\n"
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+ "test_histogram_sum \\+Inf \\d+\n"
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+ "test_histogram_count 3 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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[Fact]
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public void HistogramNaN()
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{
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var buffer = new byte[85000];
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var metrics = new List<Metric>();
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using var meter = new Meter(Utils.GetCurrentMethodName());
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using var provider = Sdk.CreateMeterProviderBuilder()
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.AddMeter(meter.Name)
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.AddInMemoryExporter(metrics)
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.Build();
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var histogram = meter.CreateHistogram<double>("test_histogram");
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histogram.Record(18);
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histogram.Record(double.PositiveInfinity);
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histogram.Record(double.NaN);
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provider.ForceFlush();
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var cursor = PrometheusSerializer.WriteMetric(buffer, 0, metrics[0]);
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Assert.Matches(
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("^"
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+ "# TYPE test_histogram histogram\n"
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+ "test_histogram_bucket{le='0'} 0 \\d+\n"
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+ "test_histogram_bucket{le='5'} 0 \\d+\n"
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+ "test_histogram_bucket{le='10'} 0 \\d+\n"
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+ "test_histogram_bucket{le='25'} 1 \\d+\n"
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+ "test_histogram_bucket{le='50'} 1 \\d+\n"
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+ "test_histogram_bucket{le='75'} 1 \\d+\n"
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+ "test_histogram_bucket{le='100'} 1 \\d+\n"
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+ "test_histogram_bucket{le='250'} 1 \\d+\n"
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+ "test_histogram_bucket{le='500'} 1 \\d+\n"
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+ "test_histogram_bucket{le='1000'} 1 \\d+\n"
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+ "test_histogram_bucket{le='\\+Inf'} 3 \\d+\n"
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+ "test_histogram_sum Nan \\d+\n"
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+ "test_histogram_count 3 \\d+\n"
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+ "$").Replace('\'', '"'),
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Encoding.UTF8.GetString(buffer, 0, cursor));
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}
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}
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}
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