XCode 4的单元测试是否链接错误? [英] Linking error for unit testing with XCode 4?

问题描述

我想为我的XCode应用程序中的类编写一些逻辑单元测试.在Xcode 4中，我在项目浏览器"中单击了项目名称，然后从底部单击了添加目标".我在其他"下选择可可接触单元测试包"，为新目标指定测试"的产品名称"，然后完成.

I want to write some logic unit tests for classes in my XCode application. In Xcode 4, I clicked on the project name in the Project Navigator, and from the bottom clicked Add Target. I chose "Cocoa Touch Unit Testing Bundle" under Other, give the new target a "product name" of "tests", and finish.

因为我要测试的类已编译为现有应用程序目标的一部分，所以对于新的测试"目标，我立即转到构建阶段"选项卡，并将现有应用程序目标添加为唯一的目标依赖项.

Because the class I want to test is compiled as part of my existing application target, for my new "tests" target I immediately go to the Build Phases tab and add my existing application target as the only target dependency.

然后转到创建的tests.m文件，导入要测试的类(在ReleasePlanManager下面，并调用其方法之一.但是链接器失败，并显示以下错误:

I then go to the created tests.m file, import the class I want to test (below it's ReleasePlanManager, and call one of its methods. But the linker fails with an error like:

Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_ReleasePlanManager", referenced from:
      objc-class-ref in tests.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status

因此，即使(根据我的理解)添加应用程序目标(属于它的一部分)应该足够了，也无法找到该类?

So the class cannot be found, even though (from my understanding) adding the application target (which it is a part of) should be sufficient?

任何帮助将不胜感激.谢谢！

Any help would be greatly appreciated. Thanks!

推荐答案

您的测试包需要额外的设置:

Your test bundle needs extra settings:

• 将捆绑程序加载器设置为$(BUILT_PRODUCTS_DIR)/AppName.app/AppName(在两个位置都将AppName替换为您的应用名称)
• 将测试主机设置为$(BUNDLE_LOADER)

• Set Bundle Loader to $(BUILT_PRODUCTS_DIR)/AppName.app/AppName (replacing AppName in both places with your app's name)
• Set Test Host to $(BUNDLE_LOADER)

(如果您从头开始创建项目并启用单元测试，则会为您设置这些.但是，如果将单元测试包添加到现有项目中，则不是.)

(If you create a project from scratch and enable unit tests, these are set up for you. But if you add a unit test bundle to an existing project, they're not.)

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