ARC, bridged cast and GHUnit

问题

I'm followinng tutorial from http://gabriel.github.com/gh-unit/docs/appledoc_include/guide_testing.html. The problem is that my project uses ARC and GHUnit doesn't. I managed previous errors, but now i should do bridged cast, that i've never used, and i'm lost.

NSString *string1 = @"a string";
GHAssertNotNULL(string1, nil); //error here

Error description: Implicit conversion of Objective-C pointer type 'NSString *' to C pointer type 'const void *' requires a bridged cast.

Any help welcome :)

回答1:

Since you are comparing an NSString, you should use the GHAssertNotNil check. See NULL vs nil in Objective-C for more info.

So your example should read:

NSString *string1 = @"a string";
GHAssertNotNil(string1, nil);

I've also noticed in my ARC projects using GHUnit that the GHUnit main.m file needs the

-fno-objc-arc

linker flag as was suggested previously.

回答2:

You can exclude only GHUnit files from automatics referencing(ARC) from your project by going into Build Phase -> Compile Sources

and then double click on the files from GHUnit, a box will appear, paste following into it

-fno-objc-arc

This will exclude the files from GHUnit from automatics referencing(ARC).

来源：https://stackoverflow.com/questions/9991062/arc-bridged-cast-and-ghunit