ExceptionExtensions Class

Delta Engine Documentation

Categorizes exceptions into fatal and weak ones. Fatal exceptions are always rethrown and weak ones (most likely simple programming mistakes) can be logged and ignored if no debugger is attached. See http://vasters.com/clemensv/2012/09/06/Are+You+Catching+Falling+Knives.aspx View code on GitHub

Inheritance Hierarchy

System Object
DeltaEngine.Extensions ExceptionExtensions

Namespace: DeltaEngine.Extensions
Assembly: DeltaEngine (in DeltaEngine.dll) Version: 1.1.1.0 (1.1.1)

Syntax

C++

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public static class ExceptionExtensions

public static class ExceptionExtensions

<ExtensionAttribute> 
Public NotInheritable Class ExceptionExtensions

<ExtensionAttribute> 
Public NotInheritable Class ExceptionExtensions

[ExtensionAttribute]
public ref class ExceptionExtensions abstract sealed

[ExtensionAttribute]
public ref class ExceptionExtensions abstract sealed

[<AbstractClassAttribute>]
[<SealedAttribute>]
type ExceptionExtensions =  class end

[<AbstractClassAttribute>]
[<SealedAttribute>]
type ExceptionExtensions =  class end

The ExceptionExtensions type exposes the following members.

Methods

	Name	Description
	IsFatal	View code on GitHub
	IsWeak	View code on GitHub

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Properties

	Name	Description
	IsDebugMode	View code on GitHub

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Remarks

Tests: DeltaEngine.Tests.Extensions.ExceptionExtensionsTests

Examples

5 unit tests call DeltaEngine.Extensions.ExceptionExtensions

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[Test]
public void CheckForFatalException()
{
    Assert.IsFalse(new Exception().IsFatal());
    Assert.IsTrue(new Exception("", new InvalidOperationException()).IsFatal());
    Assert.IsTrue(new InvalidOperationException().IsFatal());
    Assert.IsTrue(new OutOfMemoryException().IsFatal());
    Assert.IsTrue(new AccessViolationException().IsFatal());
    Assert.IsTrue(new StackOverflowException().IsFatal());
    Assert.IsTrue(new TargetInvocationException(null).IsFatal());
    Assert.IsFalse(new NullReferenceException(null).IsFatal());
}

[Test]
public void CheckForFatalException()
{
    Assert.IsFalse(new Exception().IsFatal());
    Assert.IsTrue(new Exception("", new InvalidOperationException()).IsFatal());
    Assert.IsTrue(new InvalidOperationException().IsFatal());
    Assert.IsTrue(new OutOfMemoryException().IsFatal());
    Assert.IsTrue(new AccessViolationException().IsFatal());
    Assert.IsTrue(new StackOverflowException().IsFatal());
    Assert.IsTrue(new TargetInvocationException(null).IsFatal());
    Assert.IsFalse(new NullReferenceException(null).IsFatal());
}

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[Test]
public void CheckForWeakException()
{
    Assert.IsFalse(new Exception().IsWeak());
    Assert.IsTrue(new ArgumentNullException().IsWeak());
}

[Test]
public void CheckForWeakException()
{
    Assert.IsFalse(new Exception().IsWeak());
    Assert.IsTrue(new ArgumentNullException().IsWeak());
}

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[Test]
public void MakeSureFatalExceptionsAreRethrown()
{
    try
    {
        TryMakeSureFatalExceptionsAreRethrown();
    } // ncrunch: no coverage 
    catch (Exception ex)
    {
        Assert.IsTrue(ex.IsFatal());
    }
}

[Test]
public void MakeSureFatalExceptionsAreRethrown()
{
    try
    {
        TryMakeSureFatalExceptionsAreRethrown();
    } // ncrunch: no coverage 
    catch (Exception ex)
    {
        Assert.IsTrue(ex.IsFatal());
    }
}