boost.test：在测试套件中包含STL代码时编译错误。

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英文:

boost.test: compile errors when STL code is included within a test suite

问题

以下是翻译好的内容：

我的设置：

我的测试文件：

  1. // test.cpp
  2. #define BOOST_TEST_MAIN
  3. #define BOOST_TEST_MODULE a_nice_testing_attempt
  4. #include <boost/test/included/unit_test.hpp>  // this is available
  6. BOOST_AUTO_TEST_SUITE(MyNiceTestSuite)  // (*)
  8. #include <chrono>
  9. // actually I want to test much more, but I narrowed
  10. // the problem down to this minimal snippet
  12. BOOST_AUTO_TEST_SUITE_END() // (*)

然后我尝试编译如下：
g++ test.cpp -o test.exe

但出现了大量错误（精确到>1700行）。以下是开头部分的一些错误：

  1. In file included from C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:37,
  2.                  from C:/msys64/mingw64/include/c++/12.2.0/chrono:39,
  3.                  from test_main.cpp:17:
  4. C:/msys64/mingw64/include/c++/12.2.0/ratio:58:24: error: expected template-name before '<' token
  5.    58 |     : integral_constant<intmax_t, (_Pn < 0) ? -1 : 1>
  6.       |                        ^
  7. C:/msys64/mingw64/include/c++/12.2.0/ratio:58:24: error: expected '{' before '<' token
  8. C:/msys64/mingw64/include/c++/12.2.0/ratio:63:24: error: expected template-name before '<' token
  9.    63 |     : integral_constant<intmax_t, _Pn * __static_sign<_Pn>::value>
  10.       |                        ^

以及底部的一些错误：

  1. C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:1371:47:   required from 'static MyNiceTestSuite:
  2. :std::chrono::time_point<MyNiceTestSuite::std::filesystem::__file_clock, _Dur> MyNiceTestSuite::std:
  3. :filesystem::__file_clock::_S_from_sys(const MyNiceTestSuite::std::chrono::time_point<MyNiceTestSuit
  4. e::std::chrono::_V2::system_clock, _Dur2>&) [with _Dur = MyNiceTestSuite::std::chrono::duration<long
  5.  long int, MyNiceTestSuite::std::ratio<1, 1000000000> >]'
  6. C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:1338:27:   required from here
  7. C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:1020:16: error: cannot convert '__time_point' {ak
  8. a 'MyNiceTestSuite::std::chrono::time_point<MyNiceTestSuite::std::filesystem::__file_clock, int>'} t
  9. o 'int' in return
  10.  1020 |         return __time_point(__lhs.time_since_epoch() -__rhs);
  11.       |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  12.       |                |
  13.       |                __time_point {aka MyNiceTestSuite::std::chrono::time_point<MyNiceTestSuite::s
  14. td::filesystem::__file_clock, int>}

如果删除标有星号的行（即与 BOOST_AUTO_TEST_SUITE 相关的行），则可以成功编译。不幸的是，我无法从这里进一步解决问题，我的问题相当模糊：

  • 这里发生了什么，我应该如何解决它？
英文:

My setup:

My test file:

  1. // test.cpp
  2. #define BOOST_TEST_MAIN
  3. #define BOOST_TEST_MODULE a_nice_testing_attempt
  4. #include <boost/test/included/unit_test.hpp>  // this is available
  6. BOOST_AUTO_TEST_SUITE(MyNiceTestSuite)  // (*)
  8. #include <chrono>
  9. // actually I want to test much more, but I narrowed
  10. // the problem down to this minimal snippet
  12. BOOST_AUTO_TEST_SUITE_END() // (*)

Then I try to compile as:
g++ test.cpp -o test.exe

And get a bunch of errors (>1700 lines to be precise). Here's some at the very top:

  1. In file included from C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:37,
  2.                  from C:/msys64/mingw64/include/c++/12.2.0/chrono:39,
  3.                  from test_main.cpp:17:
  4. C:/msys64/mingw64/include/c++/12.2.0/ratio:58:24: error: expected template-name before '<' token
  5.    58 |     : integral_constant<intmax_t, (_Pn < 0) ? -1 : 1>
  6.       |                        ^
  7. C:/msys64/mingw64/include/c++/12.2.0/ratio:58:24: error: expected '{' before '<' token
  8. C:/msys64/mingw64/include/c++/12.2.0/ratio:63:24: error: expected template-name before '<' token
  9.    63 |     : integral_constant<intmax_t, _Pn * __static_sign<_Pn>::value>
  10.       |                        ^

And some from the bottom:

  1. C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:1371:47:   required from 'static MyNiceTestSuite:
  2. :std::chrono::time_point<MyNiceTestSuite::std::filesystem::__file_clock, _Dur> MyNiceTestSuite::std:
  3. :filesystem::__file_clock::_S_from_sys(const MyNiceTestSuite::std::chrono::time_point<MyNiceTestSuit
  4. e::std::chrono::_V2::system_clock, _Dur2>&) [with _Dur = MyNiceTestSuite::std::chrono::duration<long
  5.  long int, MyNiceTestSuite::std::ratio<1, 1000000000> >]'
  6. C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:1338:27:   required from here
  7. C:/msys64/mingw64/include/c++/12.2.0/bits/chrono.h:1020:16: error: cannot convert '__time_point' {ak
  8. a 'MyNiceTestSuite::std::chrono::time_point<MyNiceTestSuite::std::filesystem::__file_clock, int>'} t
  9. o 'int' in return
  10.  1020 |         return __time_point(__lhs.time_since_epoch() -__rhs);
  11.       |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  12.       |                |
  13.       |                __time_point {aka MyNiceTestSuite::std::chrono::time_point<MyNiceTestSuite::s
  14. td::filesystem::__file_clock, int>}

If I remove the lines marked with the astherisk (i.e. BOOST_AUTO_TEST_SUITE related), then it compiles without a problem. Unfortunately I am unable to progress from here and my question is rather vague:

  • what is going on here and how could I solve it?

答案1

得分: 3

The BOOST_AUTO_TEST_SUITE宏引入了一个命名空间。标准库头文件只能包含在全局命名空间中，不能在其他地方包含。

这是一个示例，除了标准库之外不使用任何库，这应该导致类似于您的编译错误：

  1. #define ADD_NAMESPACE 1
  3. #if ADD_NAMESPACE
  4. namespace Foo
  5. {
  6. #endif
  8. #include <chrono>
  10. #if ADD_NAMESPACE
  11. }
  12. #endif

在线演示

（将 #define ADD_NAMESPACE 0 改为使编译正常工作。）

只需将包含部分移动即可正常工作。

  1. #include <chrono>
  3. #define BOOST_TEST_MAIN
  4. #define BOOST_TEST_MODULE a_nice_testing_attempt
  5. #include <boost/test/included/unit_test.hpp>  // 这是可用的
  7. BOOST_AUTO_TEST_SUITE(MyNiceTestSuite)  // (*)
  8. // 实际上我想测试更多东西，但我将问题缩小到这个最小的代码段
  10. BOOST_AUTO_TEST_SUITE_END() // (*)
英文:

The BOOST_AUTO_TEST_SUITE macro introduces a namespace. Standard library headers must not be included anywhere but in the global namespace.

This is a example not using any libs other than the standard library which should result in compiler errors similar to yours:

  1. #define ADD_NAMESPACE 1
  3. #if ADD_NAMESPACE
  4. namespace Foo
  5. {
  6. #endif
  8. #include &lt;chrono&gt;
  10. #if ADD_NAMESPACE
  11. }
  12. #endif

Godbolt Demo

(change to #define ADD_NAMESPACE 0 to make the compilation work.)

Simply moving the include should work.

  1. #include &lt;chrono&gt;
  3. #define BOOST_TEST_MAIN
  4. #define BOOST_TEST_MODULE a_nice_testing_attempt
  5. #include &lt;boost/test/included/unit_test.hpp&gt;  // this is available
  7. BOOST_AUTO_TEST_SUITE(MyNiceTestSuite)  // (*)
  8. // actually I want to test much more, but I narrowed
  9. // the problem down to this minimal snippet
  11. BOOST_AUTO_TEST_SUITE_END() // (*)

huangapple
  • 本文由 发表于 2023年6月8日 00:41:28
  • 转载请务必保留本文链接：https://go.coder-hub.com/76425466.html
  • boost
  • boost-test
  • c++
  • c++-chrono
  • c++11
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