Testing assertion in Swift

Question

I\'m writing unit tests for a method that has an assertion. The Swift Language guide recommends using assertions for \"invalid conditions\":

Assertion

Answer 1

I believe as of Beta6 it is still impossible for Swift to catch an exception directly. The only way you can handle this is to write that particular test case in ObjC.

That said, note that _XCTAssertionType.Throws does exist, which suggests that the Swift team is aware of this and intends eventually to provide a solution. It is quite imaginable that you could write this assertion yourself in ObjC and expose it to Swift (I can't think of any reason that would be impossible in Beta6). The one big problem is that you may not easily be able to get good location information out of it (the specific line that failed, for instance).