** Changed in: nunit-3.0
Assignee: (unassigned) => Charlie Poole (charlie.poole)
** Changed in: nunit-3.0
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/501784
Title:
Theory tests do not work correctly when using null parameters
Status in NUnit Test Framework:
Fix Committed
Status in NUnitLite Testing Framework:
Fix Released
Status in NUnit V2 Test Framework:
Fix Released
Bug description:
I am using NUnit 2.5.3. Here is some code that illustrates this bug:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NUnit.Framework;
namespace NUnitTheoryBug
{
[TestFixture]
public class TheoryBug
{
[Datapoint]
public object ObjData = null;
[Theory]
public void theory_bug(object obj) {
Assume.That(obj, Is.Null);
Assert.That(true, Is.True);
}
}
}
This is reported to me as 1 skipped and as an overall pass. There are
two problems with that.
The first problem is that it should be reported as a single pass
unless there is something I don't know about as to why there should be
more than 1 test running. Either way there should be at least one pass
when it gets passed null. I put a break point in and discovered that
the theory method only executes once, and it is passed an object that
is not null. Instead of being passed null, it is passed an object
array with a length of one, with it's only element set to null. I
believe I have run into this problem before with types other than
object, but I cannot reproduce this behavior now.
The second problem is that since the assumption never passed, the
overall result for the theory should be a fail not a pass according to
the documentation found here:
http://www.nunit.org/index.php?p=theory&r=2.5.3
I am referring to the part where it says:
"The overall result of executing a Theory over a set of test cases is
determined as follows:
If the assumptions are violated for all test cases, then the Theory
itself is marked as a failure."
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