Re: Assert::IsNotNull or Assert::IsNull do not work for my C++ unit test

Hi Greg,

I think you nailed the source of his problem.

Just as a general comment, the NUnit framework lacks a 
good syntactic layer for C++, which is why one must
often do extra work to coerce arguments, etc.

For NUnit 3.0, I envision a C++ friendly layer on
top of the basic framework.

Charlie 

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf 
> Of Greg Fleming
> Sent: Tuesday, November 27, 2007 12:33 PM
> To: [email protected]
> Subject: Re: [Nunit-users] Assert::IsNotNull or 
> Assert::IsNull do not work for my C++ unit test
> 
> [email protected] wrote:
> 
> > Below is the code snippet. I got "error C2665:
> > 'NUnit::Framework::Assert::IsNotNull' : none of the 3 
> overloads could
> > convert all the argument types      ".What I did wrong?
> >
> > Histogram1D<T>* histoptr = new Histogram1D<T> (64); 
> > Assert::IsNotNull(histo, "Test object."); 
> Assert::IsNull(histo, "Test 
> > object.");
> >   
> 
> "new" in C++ produces pointers on the unmanaged heap, whereas 
> Assert::IsNull expects a managed reference, which is produced 
> by gcnew.  
> Try this (VS 2005; syntax will differ in VS 2003):
> 
> 
> System::Object^ myObj = gcnew System::Object();
> System::Object^ nullObj = nullptr;
> Assert::IsNotNull( myObj, gcnew System::String( "this one 
> should not be 
> null" ) );
> Assert::IsNull( nullObj, gcnew System::String( "this one 
> should be null" 
> ) );
> 
> Histogram1D<T>* histoptr = new Histogram1D<T> (64);
> char* p = null;
> Assert::IsFalse( null == histoptr, gcnew System::String( "new 
> operator 
> should nto return null" ));
> Assert::IsTrue( null == p );
> 
> 
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