Re: Unit testing with mixed Swift & Objective C
Re: Unit testing with mixed Swift & Objective C
- Subject: Re: Unit testing with mixed Swift & Objective C
- From: David Catmull <email@hidden>
- Date: Mon, 18 Jul 2016 09:55:46 -0600
I found another solution: set the header search paths in the test target so
it can find the App-Swift.h file from the app target, include that in the
ObjC tests that need the Swift classes (instead of the one generated for
the test target), and then remove all the app Swift files from the test
target.
Using an auto-generated header from another target is kind of a hack, but
it works, and it's the simplest solution so far, so I'm going with it for
now.
On Sun, Jul 17, 2016 at 2:16 PM, David Catmull <email@hidden>
wrote:
> After converting some parts of my project to Swift, I've run into some
> problems with my tests.
>
> The first problem was where an app (not test) function, in Swift, was
> iterating over an NSArray of instances of a Swift class, because that array
> was generated by Objective C code. It was throwing an exception because the
> objects were of the wrong type. I eventually figure out that it was because
> my Swift files are in both the app and test targets, so there are two
> versions of each Swift class.
>
> For Swift tests, I understand that you're now supposed to not have your
> Swift sources in the test target, and instead use "@testable import
> MyAppModule". But what about test written in Objective C that need to
> access my Swift classes? If they're not in the test target, they won't be
> in AppTest-Swift.h. Is there some other way to generate a Swift header file?
>
> Without that, I'm looking at two alternatives for the NSArray iterating
> scenario:
> - Rewrite the function that does the iterating, using Objective C so that
> it doesn't do the type checking.
> - Rewrite the function that creates the array, using Swift so that
> hopefully the classes will match.
>
> Any other recommendations?
>
> --
> David Catmull
> email@hidden
> http://uncommonplace.com
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