Clever Geek Handbook

IOS Unit Testing in Xcode

I have an existing app that I am migrating to iOS. I am currently running unit tests with every build. My tests are integrated into my application for ease of testing, so when I passed -t

, my tests ran. The very first thing I do in mine main

is this:

for(int ii=1;ii<argc;++ii)
{
    if(strcmp("-t", argv[ii]) == 0)
        return RunAllTests(argc, argv);
}

This works great on the desktop, and I would like it to work with iOS. When I manually run the app in the simulator with the checkbox passed in -t

, the tests run as expected. Unfortunately this does not work when launched as a post-build step. I run this script on each assembly: $TARGET_BUILD_DIR/$TARGET_NAME.app/$TARGET_NAME -t

. When it starts, I get the following error:

dyld: Library not loaded: /System/Library/Frameworks/UIKit.framework/UIKit
  Referenced from: /development/test/projects/../bin/test.app/test
  Reason: image not found
/development/test/projects/../obj/test.build/Script-27DEB636151ECEC80003FE53.sh: line 2:  8720 Trace/BPT trap: 5       $TARGET_BUILD_DIR/$TARGET_NAME.app/$TARGET_NAME -t
Command /bin/sh failed with exit code 133

I assume this is because the IDE is trying to run the executable directly, not in the simulator.

I know iOS has a unit test framework, but I already have a workflow and wouldn't want to rewrite all my tests to unit test only on iOS. Is there a way to get Xcode to run my post build step in the simulator so that my tests run correctly?

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In Xcode, select Product-> Edit Scheme ... from the menu . I am assuming you are using Run, or perhaps Test, but that doesn't matter. Whatever you run, click the Arguments tab on the right. You will see "Arguments passed at startup". Add your parameter there. This should work.



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