public void WindowsPerformanceFacadeTest_VerifyWeCanSeeWellKnownCategoryTest()
{
int counterId = WindowsPerformanceFacade.GetPerformanceCounterId("cache", null, "Dirty Pages");
float value = WindowsPerformanceFacade.NextValue(counterId);
Assert.AreNotEqual(0.0f, value, 0.1f, "dirty pages should not be 0.0");
}
public void WindowsPerformanceFacadeTest_VerifyGetPerformanceCounterMatch()
{
int returnedId = WindowsPerformanceFacade.GetPerformanceCounterId("a", "b", "c");
PerformanceCounterKey foo = WindowsPerformanceFacade.GetPerformanceCounterKey(returnedId);
Assert.AreEqual("a", foo.CategoryName);
Assert.AreEqual("b", foo.InstanceName);
Assert.AreEqual("c", foo.CounterName);
}
public void WindowsPerformanceFacadeTest_VerifyIncrementBySimple64()
{
int counterId = WindowsPerformanceFacade.GetPerformanceCounterId(CounterTestUtilities.TestCategoryName, null, CounterTestUtilities.TestCounterNumberOfItems64Name);
float initialValue = WindowsPerformanceFacade.NextValue(counterId);
WindowsPerformanceFacade.IncrementBy(counterId, 3);
float finalValue = WindowsPerformanceFacade.NextValue(counterId);
Assert.AreEqual(initialValue + 3, finalValue);
}
public void WindowsPerformanceFacadeTest_GetTicks()
{
long firstTick = WindowsPerformanceFacade.StopwatchTimestamp();
Thread.Sleep(100);
long secondTick = WindowsPerformanceFacade.StopwatchTimestamp();
long elapsedTicks = secondTick - firstTick;
//// Dividing by Frequency gives you seconds but we want milliseconds
//// Assume we're not off by more than 10 msec on a 100msec wait
Assert.AreEqual(100, (1000 * elapsedTicks) / Stopwatch.Frequency, 10);
}
public void WindowsPerformanceFacadeTest_VerifySetGetNextValue()
{
int counterId = WindowsPerformanceFacade.GetPerformanceCounterId(CounterTestUtilities.TestCategoryName, null, CounterTestUtilities.TestCounterNumberOfItems64Name);
WindowsPerformanceFacade.SetRawValue(counterId, 0);
float initialValue =
WindowsPerformanceFacade.GetRawValue(counterId);
Assert.AreEqual(0.0, initialValue, 0.001); // shouldn't need delta...
WindowsPerformanceFacade.SetRawValue(counterId, 10);
float finalValue =
WindowsPerformanceFacade.GetRawValue(counterId);
Assert.AreEqual(10.0, finalValue, 0.001); // shouldn't need delta
}
public void WindowsPerformanceFacadeTest_VerifyIncrementAverageTimer32()
{
int counterId = WindowsPerformanceFacade.GetPerformanceCounterId(CounterTestUtilities.TestCategoryName, null, CounterTestUtilities.TestAverageTimer32Name);
WindowsPerformanceFacade.Increment(counterId);
WindowsPerformanceFacade.Increment(counterId);
float finalValue = WindowsPerformanceFacade.NextValue(counterId);
//// ((N1 - N0) / F) / (B1 - B0)
//// how fast is our clock
float freq = Stopwatch.Frequency;
float numerator = ((float)(2 - 1)) / freq;
float denominator = 2 - 1;
Assert.AreEqual(numerator / denominator, finalValue, .002, "Freq: " + freq);
}
public void WindowsPerformanceFacadeTest_VerifyDecrementAverageTimer32()
{
int counterId = WindowsPerformanceFacade.GetPerformanceCounterId(CounterTestUtilities.TestCategoryName, null, CounterTestUtilities.TestAverageTimer32Name);
WindowsPerformanceFacade.Increment(counterId);
WindowsPerformanceFacade.Increment(counterId);
WindowsPerformanceFacade.Decrement(counterId);
float finalValue = WindowsPerformanceFacade.NextValue(counterId);
//// ((N1 - N0) / F) / (B1 - B0)
//// how fast is our clock
float freq = Stopwatch.Frequency;
//// ((N1 - N0) / F)
float numerator = (1 - 2) / freq;
float denominator = 3 - 2;
Assert.AreEqual(numerator / denominator, finalValue, .002, "Freq: " + freq);
//// the final value is actually 0 here and our calculatd value is very small, almost -0
}
public void WindowsPerformanceFacadeTest_VerifyIncrementByAverageTimer32()
{
//// The spans need to be ever increasing number like if you used a global stopwatch
long span1 = 1000;
long span2 = 2000;
int counterId = WindowsPerformanceFacade.GetPerformanceCounterId(CounterTestUtilities.TestCategoryName, null, CounterTestUtilities.TestAverageTimer32Name);
//// average (time) of all measurements performed. lets assume it was clear before we ran the test
WindowsPerformanceFacade.IncrementBy(counterId, span1);
WindowsPerformanceFacade.IncrementBy(counterId, span2);
//// average (time) of all measurements performed.
float finalValue = WindowsPerformanceFacade.NextValue(counterId);
//// ((N1 - N0) / F) / (B1 - B0)
//// how fast is our clock
float freq = Stopwatch.Frequency;
float numerator = ((float)(span2 - span1)) / freq;
float denominator = 2 - 1;
Assert.AreEqual(numerator / denominator, finalValue, .002, "Freq: " + freq);
}
public void WindowsPerformanceFacadeTest_VerifyFailsNonExistentCategoryNameTest()
{
int counterId = WindowsPerformanceFacade.GetPerformanceCounterId("dogfood", null, "catfood");
WindowsPerformanceFacade.Increment(counterId);
}
public void WindowsPerformanceFacadeTest_VerifyFailsNoCategoryNameTest()
{
WindowsPerformanceFacade.CacheCounters(string.Empty, null);
}
public void WindowsPerformanceFacadeTest_VerifyGetPerformanceCounterNotCreated()
{
WindowsPerformanceFacade.GetPerformanceCounterKey(12);
}
