包含文件(或者头文件)定义了在操作系统中或特定的库中使用的常量、宏以及其他结构。
Include files (or header files) define constants, macros, and other structures used in the operating system or in a particular library.
只需调用预定义的run_all_tests宏，而不需要通过创建或驱动单独的运行器类来执行测试。
Just making a call to the predefined RUN_ALL_TESTS macro does the trick, as opposed to creating or deriving a separate runner class for test execution.
这可能对指定额外宏定义或编译器选项有用。
This can be useful to specify additional macro definitions or compile options.
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