I've followed this advice to get debugging working for NUnit tests.
http://www.blackwasp.co.uk/NUnitCSharpExpress.aspx
However, i have several tests that do Assert.Throws<...>
, which causes the debugger to break when the exception i'm testing for occurs, when really i want it to break if an exception occurs outside of those calls.
How can i get the debugger to ignore exceptions caused from within these kinds of methods?
EDIT: I've event tried the below, which doesn't work!
[Test]
public void InstanciatingWithNullParameterThrowsException()
{
try
{
Assert.Throws<ArgumentNullException>(() => new CachedStreamingEnumerable<int>(null));
// This still throws and stops be being able to debug tests called after this one
}
catch
{
}
}
Here is what worked for me (although in Visual Studio Professional, not Express, but I guess that should not matter).
Bring up the "Exceptions" Dialog as suggested by Ninjapig.
Click on the Add...
Button, to open the "New Exception" dialog.
OK
to close the "New Exception" dialog. Thrown
and User-unhandled
) are unchecked . Now, the debugger should completely ignore a NUnit assertion failure (ie a thrown, caught or not, NUnit.Framework.AssertionException
).
UPDATE : This will only prevent from breaking into the debugger, it cannot ignore the exception itself; ie it will not alter the actual program flow. Appart from changing or replacing or encapsulating the Assert-calls in try-catch blocks, I don't think there is anything that can achieve that (at least not automatically).
I'm uncertain if VS2010 Express has this option, but you can choose the exceptions to break on .
Go to the 'Debug' menu, then select 'Exceptions'
and from here you can select what exceptions to break on
I've ended up referencing nunit-gui-runner.dll
and invoking it like
NUnit.Gui.AppEntry.Main(new string[] { Dll });
This brings up the NUnit gui. I can then run the specific test i'm interested in.
I had the same problem. Although your original approach (without the need for a try...catch
block) works for most exception types, ArgumentNullException
doesn't work. I fixed it like this:
[Test]
public void InstanciatingWithNullParameterThrowsException()
{
bool isArgumentNullExceptionThrown = false;
try
{
new CachedStreamingEnumerable<int>(null);
}
catch (ArgumentNullException)
{
isArgumentNullExceptionThrown = true;
}
Assert.That(isArgumentNullExceptionThrown);
}
It's not as elegant, but it does seem to work.
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