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‎.gitignore‎

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*.nupkg
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*.user
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*.suo
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*.exe
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*.lock.json
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.vs
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bin
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obj

‎LICENSE‎

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The MIT License (MIT)
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Copyright (c) 2015 Sergey Kuznetsov
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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‎Prometheus.Client.Tests/MetricsTests.cs‎

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using System;
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using System.Linq;
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using Prometheus.Advanced.DataContracts;
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using Prometheus.Client.Advanced;
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using Xunit;
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namespace Prometheus.Client.Tests
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{
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public class MetricsTests
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{
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public MetricsTests()
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{
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PrometheusCollectorRegistry.Instance.Clear();
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}
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[Fact]
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public void api_usage()
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{
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var gauge = Metrics.CreateGauge("name1", "help1");
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gauge.Inc();
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Assert.Equal(1, gauge.Value);
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gauge.Inc(3.2);
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Assert.Equal(4.2, gauge.Value);
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gauge.Set(4);
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Assert.Equal(4, gauge.Value);
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gauge.Dec(0.2);
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Assert.Equal(3.8, gauge.Value);
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Assert.Throws<InvalidOperationException>(() => gauge.Labels("1"));
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var counter = Metrics.CreateCounter("name2", "help2", "label1");
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counter.Inc();
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counter.Inc(3.2);
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Assert.Equal(4.2, counter.Value);
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Assert.Equal(0, counter.Labels("a").Value);
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counter.Labels("a").Inc(3.3);
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Assert.Equal(3.3, counter.Labels("a").Value);
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counter.Labels("a").Inc(1.1);
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Assert.Equal(4.4, counter.Labels("a").Value);
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}
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[Fact]
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public void counter_collection()
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{
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var counter = Metrics.CreateCounter("name1", "help1", "label1");
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counter.Inc();
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counter.Inc(3.2);
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counter.Labels("abc").Inc(3.2);
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MetricFamily[] exported = PrometheusCollectorRegistry.Instance.CollectAll().ToArray();
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Assert.Equal(1, exported.Length);
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var familiy1 = exported[0];
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Assert.Equal("name1", familiy1.name);
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Assert.Equal("help1", familiy1.help);
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var metrics = familiy1.metric;
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Assert.Equal(2, metrics.Count);
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foreach (var metric in metrics)
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{
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Assert.Null(metric.gauge);
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Assert.Null(metric.histogram);
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Assert.Null(metric.summary);
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Assert.Null(metric.untyped);
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Assert.NotNull(metric.counter);
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}
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Assert.Equal(4.2, metrics[0].counter.value);
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Assert.Equal(0, metrics[0].label.Count);
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Assert.Equal(3.2, metrics[1].counter.value);
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var labelPairs = metrics[1].label;
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Assert.Equal(1, labelPairs.Count);
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Assert.Equal("label1", labelPairs[0].name);
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Assert.Equal("abc", labelPairs[0].value);
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}
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[Fact]
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public void custom_registry()
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{
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var myRegistry = new PrometheusCollectorRegistry();
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var counter1 = Metrics.WithCustomRegistry(myRegistry).CreateCounter("counter1", "help1"); //registered on a custom registry
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var counter2 = Metrics.CreateCounter("counter1", "help1"); //created on different registry - same name is hence permitted
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counter1.Inc(3);
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counter2.Inc(4);
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Assert.Equal(3, myRegistry.CollectAll().ToArray()[0].metric[0].counter.value); //counter1 == 3
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Assert.Equal(4, PrometheusCollectorRegistry.Instance.CollectAll().ToArray()[0].metric[0].counter.value); //counter2 == 4
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}
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[Fact]
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public void gauge_collection()
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{
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var gauge = Metrics.CreateGauge("name1", "help1");
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gauge.Inc();
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gauge.Inc(3.2);
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gauge.Set(4);
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gauge.Dec(0.2);
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var exported = PrometheusCollectorRegistry.Instance.CollectAll().ToArray();
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Assert.Equal(1, exported.Length);
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var familiy1 = exported[0];
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Assert.Equal("name1", familiy1.name);
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var metrics = familiy1.metric;
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Assert.Equal(1, metrics.Count);
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foreach (var metric in metrics)
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{
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Assert.Null(metric.counter);
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Assert.Null(metric.histogram);
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Assert.Null(metric.summary);
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Assert.Null(metric.untyped);
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Assert.NotNull(metric.gauge);
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}
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Assert.Equal(3.8, metrics[0].gauge.value);
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}
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[Fact]
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public void histogram_tests()
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{
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Histogram histogram = Metrics.CreateHistogram("hist1", "help", new []{ 1.0, 2.0, 3.0});
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histogram.Observe(1.5);
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histogram.Observe(2.5);
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histogram.Observe(1);
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histogram.Observe(2.4);
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histogram.Observe(2.1);
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histogram.Observe(0.4);
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histogram.Observe(1.4);
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histogram.Observe(1.5);
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histogram.Observe(3.9);
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var metric = histogram.Collect().metric[0];
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Assert.NotNull(metric.histogram);
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Assert.Equal(9ul, metric.histogram.sample_count);
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Assert.Equal(16.7, metric.histogram.sample_sum);
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Assert.Equal(4, metric.histogram.bucket.Count);
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Assert.Equal(2ul, metric.histogram.bucket[0].cumulative_count);
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Assert.Equal(5ul, metric.histogram.bucket[1].cumulative_count);
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Assert.Equal(8ul, metric.histogram.bucket[2].cumulative_count);
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Assert.Equal(9ul, metric.histogram.bucket[3].cumulative_count);
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}
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[Fact]
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public void summary_tests()
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{
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var summary = Metrics.CreateSummary("summ1", "help");
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summary.Observe(1);
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summary.Observe(2);
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summary.Observe(3);
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var metric = summary.Collect().metric[0];
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Assert.NotNull(metric.summary);
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Assert.Equal(3ul, metric.summary.sample_count);
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Assert.Equal(6, metric.summary.sample_sum);
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}
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[Fact]
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public void same_labels_return_same_instance()
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{
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var gauge = Metrics.CreateGauge("name1", "help1", "label1");
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var labelled1 = gauge.Labels("1");
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var labelled2 = gauge.Labels("1");
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Assert.Same(labelled1, labelled2);
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}
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[Fact]
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public void cannot_create_metrics_with_the_same_name_but_different_labels()
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{
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Metrics.CreateGauge("name1", "h");
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Assert.Throws<InvalidOperationException>(() => Metrics.CreateCounter("name1", "h", "label1"));
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}
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[Fact]
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public void metric_names()
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{
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("my-metric", "help"));
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("my!metric", "help"));
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("%", "help"));
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("5a", "help"));
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Metrics.CreateGauge("abc", "help");
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Metrics.CreateGauge("myMetric2", "help");
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Metrics.CreateGauge("a:3", "help");
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}
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[Fact]
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public void label_names()
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{
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("a", "help1", "my-metric"));
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("a", "help1", "my!metric"));
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("a", "help1", "my%metric"));
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Assert.Throws<ArgumentException>(() => Metrics.CreateHistogram("a", "help1", null, "le"));
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Metrics.CreateGauge("a", "help1", "my:metric");
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Metrics.CreateGauge("b", "help1", "good_name");
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Assert.Throws<ArgumentException>(() => Metrics.CreateGauge("c", "help1", "__reserved"));
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}
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}
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}

‎Prometheus.Client.Tests/Prometheus.Client.Tests.xproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup>
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<VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
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<VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
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</PropertyGroup>
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<Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.Props" Condition="'$(VSToolsPath)' != ''" />
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<PropertyGroup Label="Globals">
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<ProjectGuid>39307509-c927-4974-9114-e036c8f7df54</ProjectGuid>
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<RootNamespace>Prometheus.Client.Tests</RootNamespace>
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<BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">.\obj</BaseIntermediateOutputPath>
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<OutputPath Condition="'$(OutputPath)'=='' ">.\bin\</OutputPath>
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</PropertyGroup>
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<PropertyGroup>
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<SchemaVersion>2.0</SchemaVersion>
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</PropertyGroup>
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<Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.targets" Condition="'$(VSToolsPath)' != ''" />
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</Project>

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