Because the null value doesn't carry runtime type information. The
reflection framework won't be able tell which method you want to call.
There are two possible solutions to this:
If you mean null by don't care of what the parameter value is, then try
using string.Empty instead of null as Jake suggested. i.e.:
example = MockRepository.
>
> GenerateStrictMock<AbstractExample>(string.Empty);
If you must pass a null string then you need a subclass:
abstract class AbstractExampleStub : AbstractExample
{
public AbstractExampleStub(string name) : base(name){}
}
Then use
example = MockRepository.
>
> GenerateStrictMock<AbstractExampleStub>(name);
HTH,
Kenneth
On Wed, Apr 14, 2010 at 10:34 AM, BaRuSa <[email protected]> wrote:
> Simplified example of a class:
>
> abstract class AbstractExample : IExampleInterface
> {
> protected AbstractExample(string name) { /* Do Stuff */ }
> protected AbstractExample(IExampleInterface deepCopy) { /* Do Stuff
> */ }
> // abstract methods
> }
>
>
> Simpiflied test for constructor:
>
> [ExpectedException(typeof(ArgumentNullException))]
> void Test()
> {
> AbstractExample example;
> string name;
>
> name = null;
> example = MockRepository.GenerateStrictMock<AbstractExample>(name);
> }
>
>
> The test creates an exception
> "System.Reflection.AmbiguousMatchException: Ambiguous match found." I
> am assuming the problem is there are two constructors that could
> accept null, but Rhino Mocks doesn't know which type to use. I know
> there are constraints that be placed on methods; are there constraints
> for calling constructors? Is there a different solution I am not
> thinking about?
>
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