OCUnit迁移到XCTest会导致链接器错误

Question

I've tried to migrate our OCUnit to XCTest . So I have 100% compilable project but I see next linker error:

Error:Undefined symbol '_OBJC_CLASS_$_XCTestCase' referenced from:...

My "Framework Search Paths" looks like this:

$(SDKROOT)/Developer/Library/Frameworks     (non-recursive)
$(inherited)                                (non-recursive)
$(DEVELOPER_FRAMEWORKS_DIR)                 (non-recursive)

I'm not familiar what else to do to satisfy linker

Answer 1

I am seeing the exact same error messages in Xcode 6.1 after migrating with
Pull Down Menu → Edit → Refactor → Convert to XCTest .

I got 2 solutions:

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Solution 1 ^{_{(recreate test project)}}

1. Backup all source files in your test project.

2. In Project Navigator , select the project.
   This shows the project settings.

3. In the project settings, click Show project and targets list .

4. Select the test target , and press delete to delete it.

5. In Project Navigator , select the test target , and press delete to delete it.

6. In Test Navigator , click the + button on the bottom left, and choose New Test Target .

7. Add your original source files back into the new test target.

8. Now test your project as usual.

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Solution 2 ^{_{(hackishly modify test project)}}

1. In Project Navigator , select the project.
   This shows the project settings.

2. In the project settings, select the test target (not the main target), then select Build Phases .

3. In Link Binary With Libraries , click the + button.
   This shows the list of frameworks, but there is no XCTest.

4. Choose a framework that you don't use at all, say, Twitter.framework , and click Add .

5. Open your project file ( something.pbxproj ) in a text editor, and replace all occurrences of Twitter.framework with XCTest.framework .
   _{Note: the pbxproj file is inside the .xcodeproj folder. In Finder, you have to right click on the .xcodeproj and select Show Package Contents .}

6. Go back to Link Binary With Libraries in Xcode, and check that XCTest.framework is added.

   • If not, try restarting Xcode.
   • If it is added but is red, just ignore it. Xcode can't find the framework, but the linker can.

7. Now test your project as usual.