CMake 的 PASS_REGULAR_EXPRESSION 如何匹配多行输出？

Question

我想通过以下方式通过 CMake 添加测试：

ADD_UNIT_TEST(MyTest)
set_tests_properties(
    MyTest
    PROPERTIES
        PASS_REGULAR_EXPRESSION
           "This matches the first line\n"
           "This matches the second line"
)

这可能吗？如何？

Answer 1

我找到了这篇文章，并使用文章中建议的代码修改了您的示例：

• 替换\n为[\r\n\t ]*

以下内容在我的 CMake 版本 3.5.2 上成功运行：

cmake_minimum_required(VERSION 3.5)

project(RegExMultiLine)

enable_testing()

add_test(
    NAME 
        MyTest 
    COMMAND 
        ${CMAKE_COMMAND} -E echo 
            "Some other line\n"
            "This matches the first line\n"
            "This matches the second line\n"
            "Another line"
)

set_tests_properties(
    MyTest
    PROPERTIES
        PASS_REGULAR_EXPRESSION
           "This matches the first line[\r\n\t ]*This matches the second line"
)

会给出：

> ctest -C Debug
[...]
    Start 1: MyTest
1/1 Test #1: MyTest ...........................   Passed    0.03 sec

而不是（当使用原始代码时）：

> ctest -C Debug
[...]
    Start 1: MyTest
1/1 Test #1: MyTest ...........................***Failed  Required regular expression not found.Regex=[This matches the first line
This matches the second line
]  0.03 sec