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Advanced Unit Testing, Part IV - Fixture Setup/Teardown, Test Repetition And Performance Tests

, 8 Oct 2003
This article extends the unit testing framework, adding fixture setup/teardown capability and performance (time and memory) measurement/testing.
autp4_demo.zip
UTWinForm
App.ico
bin
Debug
Fail.ico
Ignore.ico
ka.ico
Lib.dll
Lib.pdb
NotRun.ico
Pass.ico
UnitTest.dll
Untested.ico
UTCore.dll
UTExample.dll
UTWinForm.exe
obj
Debug
temp
TempPE
UTWinForm.exe
UTWinForm.Form1.resources
UTWinForm.pdb
UTWinForm.projdata
UTWinForm.csproj.user
Lib
bin
Debug
Lib.dll
KALib.csproj.user
obj
Debug
KALib.projdata
Lib.dll
Lib.pdb
Lib.projdata
temp
TempPE
UnitTest
bin
Debug
UnitTest.dll
obj
Debug
temp
TempPE
UnitTest.dll
UnitTest.pdb
UnitTest.projdata
UnitTest.csproj.user
UTCore
bin
Debug
Lib.dll
UnitTest.dll
UTCore.dll
obj
Debug
temp
TempPE
UTCore.dll
UTCore.pdb
UTCore.projdata
UTCore.csproj.user
UTExample
bin
Debug
UnitTest.dll
UTExample.dll
obj
Debug
temp
TempPE
UTExample.dll
UTExample.pdb
UTExample.projdata
Stubs
UTExample.csproj.user
using System;

using KALib;

namespace UTCore
{
	public abstract class TestUnitAttribute
	{
		protected ClassItem ci;
		protected MethodItem mi;
		protected object attr;

		private long ticks;
		private double secs;
		private string time;

		public ClassItem TestClass
		{
			get {return ci;}
		}

		public MethodItem TestMethod
		{
			get {return mi;}
		}

		public string Time
		{
			get {return time;}
			set {time=value;}
		}

		public double dTime
		{
			get {return secs;}
			set
			{
				secs=value;
				time=String.Format("{0:0.0000000}", secs);
			}
		}

		public TestUnitAttribute()
		{
		}

		public abstract void SelfRegister(TestFixture tf);

		public void Initialize(ClassItem ci, MethodItem mi, object attr)
		{
			this.ci=ci;
			this.mi=mi;
			this.attr=attr;
		}

		public object CreateClass()
		{
			object obj=ci.Create();
			return obj;
		}

		public virtual void Invoke(object classInstance)
		{
			// make sure we time exceptions as well.
			try
			{
				mi.Invoke(classInstance);
			}
			catch(Exception e)
			{
				throw(e);
			}
			finally
			{
				ticks=mi.ExecutionTime;
				secs=(double)ticks/HiResTimer.TicksPerSecond;
				time=String.Format("{0:0.0000000}", secs);
			}
		}
	}

	public class NullTestUnitAttribute : TestUnitAttribute
	{
		public override void Invoke(object classInstance)
		{
		}

		public override void SelfRegister(TestFixture tf)
		{
		}

	}

	public class TestFixtureAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			tf.AddTestFixtureAttribute(this);
		}
	}

	public class ProcessTestAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			tf.IsProcessTest=true;
		}
	}

	public class FixtureSetUpAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			tf.AddFixtureSetUpAttribute(this);
		}
	}

	public class FixtureTearDownAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			tf.AddFixtureTearDownAttribute(this);
		}
	}

	public class SequenceAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			UnitTest.SequenceAttribute sa=attr as UnitTest.SequenceAttribute;
			mi.Sequence=sa.Order;
		}
	}

	public class RequiresAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			UnitTest.RequiresAttribute ra=attr as UnitTest.RequiresAttribute;
			mi.AddRequires(ra.PriorTestMethod);
		}
	}

	public class TestAttribute : TestUnitAttribute
	{
		public enum TestState
		{
			Untested=0,
			NotRun,
			Pass,
			Ignore,
			Fail,
		}

		TestState state;
		string result;

		public TestState State
		{
			get {return state;}
			set {state=value;}
		}

		public string Result
		{
			get {return result;}
			set {result=value;}
		}

		public bool IgnoreTest
		{
			get {return mi.Ignore==true;}
		}

		public string IgnoreReason
		{
			get {return mi.IgnoreReason;}
		}

		public Type ExpectedExceptionType
		{
			get
			{
				if (mi.ExpectedException==null)
				{
					return null;
				}
				else
				{
					return mi.ExpectedException.ExceptionType;
				}
			}
		}

		public TestAttribute()
		{
			state=TestState.Untested;
			result="";
		}

		public override void SelfRegister(TestFixture tf)
		{
			tf.AddTestAttribute(this);
		}
	}

	public class TestSetUpAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			tf.AddTestSetUpAttribute(this);
		}
	}

	public class TestTearDownAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			tf.AddTestTearDownAttribute(this);
		}
	}

	public class ExpectedExceptionAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			mi.ExpectedException=attr as UnitTest.ExpectedExceptionAttribute;
		}
	}

	public class ReverseProcessExpectedExceptionAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			mi.ReverseProcessExpectedException.Add((attr as UnitTest.ReverseProcessExpectedExceptionAttribute).ExceptionType, attr);
		}
	}

	public class IgnoreAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			mi.Ignore=true;
			mi.IgnoreReason=(attr as UnitTest.IgnoreAttribute).Reason;
		}
	}

	public class MinOperationsPerSecondAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			mi.MinOPS=(attr as UnitTest.MinOperationsPerSecondAttribute).MinOPS;
		}
	}

	public class RepeatAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			mi.RepeatCount=(attr as UnitTest.RepeatAttribute).RepeatCount;
			mi.RepeatDelay=(attr as UnitTest.RepeatAttribute).RepeatDelay;
		}
	}

	public class MaxKMemoryAttribute : TestUnitAttribute
	{
		public override void SelfRegister(TestFixture tf)
		{
			mi.MaxK=(attr as UnitTest.MaxKMemoryAttribute).MaxK;
		}
	}
}

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About the Author

Marc Clifton

United States United States
Marc is the creator of two open source projets, MyXaml, a declarative (XML) instantiation engine and the Advanced Unit Testing framework, and Interacx, a commercial n-tier RAD application suite.  Visit his website, www.marcclifton.com, where you will find many of his articles and his blog.
 
Marc lives in Philmont, NY.

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