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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections;
using System.Collections.Specialized;
using Xunit;
namespace System.Diagnostics.Tests
{
public static class PerformanceCounterTests
{
[Fact]
public static void PerformanceCounter_CreateCounter_EmptyCounter()
{
using (PerformanceCounter counterSample = new PerformanceCounter())
{
Assert.Equal(".", counterSample.MachineName);
Assert.Equal(string.Empty, counterSample.CategoryName);
Assert.Equal(string.Empty, counterSample.CounterName);
Assert.Equal(string.Empty, counterSample.InstanceName);
Assert.True(counterSample.ReadOnly);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteToPerfCounters))]
public static void PerformanceCounter_CreateCounter_Count0()
{
var name = nameof(PerformanceCounter_CreateCounter_Count0) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, false, PerformanceCounterCategoryType.SingleInstance))
{
counterSample.RawValue = 0;
Assert.Equal(0, counterSample.RawValue);
Helpers.DeleteCategory(name);
}
}
[Fact]
public static void PerformanceCounter_CreateCounter_ProcessorCounter()
{
using (PerformanceCounter counterSample = new PerformanceCounter("Processor", "Interrupts/sec", "0", "."))
{
Assert.Equal(0, Helpers.RetryOnAllPlatforms(() => counterSample.NextValue()));
Assert.True(counterSample.RawValue > 0);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_CreateCounter_MultiInstanceReadOnly()
{
var name = nameof(PerformanceCounter_CreateCounter_MultiInstanceReadOnly) + "_Counter";
var instance = name + "_Instance";
var category = Helpers.CreateCategory(name, PerformanceCounterCategoryType.MultiInstance);
using (PerformanceCounter counterSample = Helpers.RetryOnAllPlatforms(() => new PerformanceCounter(category, name, instance)))
{
Assert.Equal(name, counterSample.CounterName);
Assert.Equal(category, counterSample.CategoryName);
Assert.Equal(instance, counterSample.InstanceName);
Assert.Equal("counter description", Helpers.RetryOnAllPlatforms(() => counterSample.CounterHelp));
Assert.True(counterSample.ReadOnly);
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_CreateCounter_SetReadOnly()
{
var name = nameof(PerformanceCounter_CreateCounter_SetReadOnly) + "_Counter";
var category = Helpers.CreateCategory(name, PerformanceCounterCategoryType.SingleInstance);
using (PerformanceCounter counterSample = Helpers.RetryOnAllPlatforms(() => new PerformanceCounter(category, name)))
{
counterSample.ReadOnly = false;
Assert.False(counterSample.ReadOnly);
}
Helpers.DeleteCategory(name);
}
[Fact]
public static void PerformanceCounter_SetProperties_Null()
{
using (PerformanceCounter counterSample = new PerformanceCounter())
{
Assert.Throws<ArgumentNullException>(() => counterSample.CategoryName = null);
Assert.Throws<ArgumentNullException>(() => counterSample.CounterName = null);
Assert.Throws<ArgumentException>(() => counterSample.MachineName = null);
}
}
[Fact]
public static void PerformanceCounter_SetRawValue_ReadOnly()
{
using (PerformanceCounter counterSample = new PerformanceCounter())
{
Assert.Throws<InvalidOperationException>(() => counterSample.RawValue = 10);
}
}
[Fact]
public static void PerformanceCounter_GetRawValue_EmptyCategoryName()
{
var name = nameof(PerformanceCounter_GetRawValue_EmptyCategoryName) + "_Counter";
using (PerformanceCounter counterSample = new PerformanceCounter())
{
counterSample.ReadOnly = false;
counterSample.CounterName = name;
Assert.Throws<InvalidOperationException>(() => counterSample.RawValue);
}
}
[Fact]
public static void PerformanceCounter_GetRawValue_EmptyCounterName()
{
var name = nameof(PerformanceCounter_GetRawValue_EmptyCounterName) + "_Counter";
using (PerformanceCounter counterSample = new PerformanceCounter())
{
counterSample.ReadOnly = false;
counterSample.CategoryName = name + "_Category";
Assert.Throws<InvalidOperationException>(() => counterSample.RawValue);
}
}
[Fact]
public static void PerformanceCounter_GetRawValue_CounterDoesNotExist()
{
var name = nameof(PerformanceCounter_GetRawValue_CounterDoesNotExist) + "_Counter";
using (PerformanceCounter counterSample = new PerformanceCounter())
{
counterSample.ReadOnly = false;
counterSample.CounterName = name;
counterSample.CategoryName = name + "_Category";
Assert.Throws<InvalidOperationException>(() => counterSample.RawValue);
}
}
[ActiveIssue("https://github.com/dotnet/runtime/issues/29753")]
[Fact]
public static void PerformanceCounter_NextValue_ProcessorCounter()
{
using (PerformanceCounter counterSample = new PerformanceCounter("Processor", "Interrupts/sec", "0", "."))
{
Helpers.RetryOnAllPlatforms(() => counterSample.NextValue());
System.Threading.Thread.Sleep(30);
Assert.True(Helpers.RetryOnAllPlatforms(() => counterSample.NextValue()) > 0);
}
}
[Fact]
public static void PerformanceCounter_BeginInit_ProcessorCounter()
{
using (PerformanceCounter counterSample = new PerformanceCounter("Processor", "Interrupts/sec", "0", "."))
{
counterSample.BeginInit();
Assert.NotNull(counterSample);
}
}
[Fact]
public static void PerformanceCounter_BeginInitEndInit_ProcessorCounter()
{
using (PerformanceCounter counterSample = new PerformanceCounter("Processor", "Interrupts/sec", "0", "."))
{
counterSample.BeginInit();
counterSample.EndInit();
Assert.NotNull(counterSample);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_Decrement()
{
var name = nameof(PerformanceCounter_Decrement) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, false, PerformanceCounterCategoryType.SingleInstance))
{
counterSample.RawValue = 10;
Helpers.RetryOnAllPlatforms(() => counterSample.Decrement());
Assert.Equal(9, counterSample.RawValue);
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_Increment()
{
var name = nameof(PerformanceCounter_Increment) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, false, PerformanceCounterCategoryType.SingleInstance))
{
counterSample.RawValue = 10;
Helpers.RetryOnAllPlatforms(() => counterSample.Increment());
Assert.Equal(11, Helpers.RetryOnAllPlatforms(() => counterSample.NextSample().RawValue));
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_IncrementBy_IncrementBy2()
{
var name = nameof(PerformanceCounter_IncrementBy_IncrementBy2) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, false, PerformanceCounterCategoryType.SingleInstance))
{
counterSample.RawValue = 10;
Helpers.RetryOnAllPlatforms(() => counterSample.IncrementBy(2));
Assert.Equal(12, counterSample.RawValue);
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_IncrementBy_IncrementByReadOnly()
{
var name = nameof(PerformanceCounter_IncrementBy_IncrementByReadOnly) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, true, PerformanceCounterCategoryType.SingleInstance))
{
Assert.Throws<InvalidOperationException>(() => counterSample.IncrementBy(2));
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_Increment_IncrementReadOnly()
{
var name = nameof(PerformanceCounter_Increment_IncrementReadOnly) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, true, PerformanceCounterCategoryType.SingleInstance))
{
Assert.Throws<InvalidOperationException>(() => counterSample.Increment());
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_Decrement_DecrementReadOnly()
{
var name = nameof(PerformanceCounter_Decrement_DecrementReadOnly) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, true, PerformanceCounterCategoryType.SingleInstance))
{
Assert.Throws<InvalidOperationException>(() => counterSample.Decrement());
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteToPerfCounters))]
public static void PerformanceCounter_RemoveInstance()
{
var name = nameof(PerformanceCounter_RemoveInstance) + "_Counter";
using (PerformanceCounter counterSample = CreateCounterWithCategory(name, false, PerformanceCounterCategoryType.SingleInstance))
{
counterSample.RawValue = 100;
counterSample.RemoveInstance();
counterSample.Close();
Assert.NotNull(counterSample);
Helpers.DeleteCategory(name);
}
}
[ConditionalFact(typeof(Helpers), nameof(Helpers.IsElevatedAndCanWriteAndReadNetPerfCounters))]
public static void PerformanceCounter_NextSample_MultiInstance()
{
var name = nameof(PerformanceCounter_NextSample_MultiInstance) + "_Counter";
var instance = name + "_Instance";
var category = Helpers.CreateCategory(name, PerformanceCounterCategoryType.MultiInstance);
using (PerformanceCounter counterSample = new PerformanceCounter(category, name, instance, false))
{
counterSample.RawValue = 10;
Helpers.RetryOnAllPlatforms(() => counterSample.Decrement());
Assert.Equal(9, counterSample.RawValue);
Helpers.DeleteCategory(name);
}
}
public static PerformanceCounter CreateCounterWithCategory(string name, bool readOnly, PerformanceCounterCategoryType categoryType )
{
var category = Helpers.CreateCategory(name, categoryType);
PerformanceCounter counterSample = Helpers.RetryOnAllPlatforms(() => new PerformanceCounter(category, name, readOnly));
return counterSample;
}
}
}
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