CTest有多个命令 [英] CTest with multiple commands

问题描述

我正在使用CTest构建一些测试。通常，我可以通过简单的行来设置测试：

I'm building some tests using CTest. Usually, I can set up the test by simply the line:

ADD_TEST(Test_Name executable args)

然而，我遇到了一个问题，我有一些测试需要运行两个命令，是否有任何方式我可以在单个ctest中运行两个程序，或者我需要为每个程序创建一个新的测试？

However, I've run into a problem, I have some tests that require two commands to be run in order for it to work, is there any way I can run two programs within a single ctest, or am I required to create a new test for each?

谢谢。

推荐答案

add_test 命令只接受一个可执行文件，脚本。要以跨平台的方式做到这一点，请在CMake本身中编写脚本。当您运行 make 或 -P 选项用于运行任意大小的CMake脚本语言> make test ，而不是在Makefile生成时。

The add_test command only accepts one executable, but you can run any executable that is really a script. To do this in a cross platform way, write the script in CMake itself. CMake has the -P option for running arbitrary chunks of CMake scripting language when you run make or make test, rather than at Makefile generation time.

很遗憾，您无法将参数传递给这样的脚本。

Sadly you can't pass arguments to such a script. But you can set variables to values, which is just as good.

这个脚本可以调用 runtests.cmake ，它运行命令CMD1和CMD2，并检查每个非零返回代码，如果发生这种情况，将返回一个错误的CMake本身：

This script you can call runtests.cmake, it runs the commands CMD1 and CMD2 and checks each for a non-zero return code, returning out of CMake itself with an error if that happens:

macro(EXEC_CHECK CMD)
    execute_process(COMMAND ${CMD} RESULT_VARIABLE CMD_RESULT)
    if(CMD_RESULT)
        message(FATAL_ERROR "Error running ${CMD}")
    endif()
endmacro()
exec_check(${CMD1})
exec_check(${CMD2})

...然后添加您的测试用例：

... and then add your test cases like so:

add_executable(test1 test1.c)
add_executable(test2 test2.c)
add_test(NAME test
    COMMAND ${CMAKE_COMMAND}
            -DCMD1=$<TARGET_FILE:test1>
            -DCMD2=$<TARGET_FILE:test2>
    -P ${CMAKE_CURRENT_SOURCE_DIR}/runtests.cmake)

b $ b

$< TARGET_FILE：test1> 在构建文件生成时扩展到可执行文件的完整路径。当你运行 make test 或等效的时候，这将运行cmake -P runtests.cmake，将CMD1和CMD2变量设置为合适的测试程序。然后脚本将按顺序执行您的2个程序。如果任一测试程序失败，整个测试失败。如果需要查看测试的输出，可以运行 make test ARGS = -V

$<TARGET_FILE:test1> gets expanded to the full path to the executable at build-file generation time. When you run make test or equivalent this will run "cmake -P runtests.cmake" setting the CMD1 and CMD2 variables to the appropriate test programs. The script will then execute your 2 programs in sequence. If either of the test programs fail, the whole test fails. If you need to see the output of the test, you can run make test ARGS=-V

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