XCode UI Testing: Unable to find test runner app containing test bundle path

Question

I have written UI Tests in XCode 7.3.1 on a dedicated target. I can record a UI test but if I try to launch it (all tests or a single one), I got the following error :

Unable to find test runner app containing test bundle path /Users/dle/Library/Developer/Xcode/DerivedData/Keecoach-exynmciqyehgmxcfxhkpksrqifsb/Build/Products/Debug-iphonesimulator/DemoKeecoachUITests-Runner.app/PlugIns/DemoKeecoachUITests.app

I do not really understand the message except that it appears a runner app has to launch the tests and that runner app is not existing. This DemoKeecoachUITests-Runner.app does not actually exist on my disk.

I cannot find anybody else mentionning the problem anywhere... I get the same error if I launch the tests in command line with xctool. I have the same problem on other computers, but I do not have the problem on other project, so it is related to the project. Any clue ?

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Answer 1

Found it!

Was due to the Wrapper Extension build setting. It was set to app for the project and so inherited for each target. I switched it to nothing for the projet, app for the application target and xctest for the test targets.

Now the generated binaries for tests are ABCTests.xctest and not ABCTests.app anymore. It was probably like this from a long time, but I don't know for what reason...

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how-do-i-change-a-targets-wrapper-extension – Darby