c++ - Boost Test 使用变体

Question

我使用的是 Visual Studio 2017 Enterprise 15.9.12 和 Visual C++ 2017 00369-90013-89248-AA631 和 Boost 版本 1.71.0。

我有一个单元测试项目，当我只有一个文件( AstroTimeTest.cpp )时，一切都会找到。但是，当我添加了另一个文件 ( CoordinateSystemsTest.cpp ) 时，我收到了一些链接器错误。为了创建第二个文件，我从第一个文件中复制了一些代码。

AstroTimeTest.cpp 内容:

#define BOOST_TEST_MODULE astroTimeTests
#include <boost/test/included/unit_test.hpp>
#include <iostream>

#include "../../AstroTime/AstroTime.h"

struct TestFixture
{
    AstroTime time_instance;

    TestFixture()
        : time_instance()
    {}

    ~TestFixture() = default;
};

bool operator ==(astTime const &left, astTime const &right)
{
    return(
        left.secs == right.secs
        && left.min == right.min
        && left.hour == right.hour);
}

std::ostream& operator<<(std::ostream& os, const astTime& dt)
{
    os << dt.hour << "h " << dt.min << "m " << dt.secs << "s" << std::endl;

    return os;
}

bool operator ==(dateTime const &left, dateTime const &right)
{
    return(
        left.t.secs == right.t.secs
        && left.t.min == right.t.min
        && left.t.hour == right.t.hour
        && left.day == right.day
        && left.mon == right.mon
        && left.year == right.year
        && left.daylightSaving == right.daylightSaving
        && left.timeZone == right.timeZone);
}

std::ostream& operator<<(std::ostream& os, const dateTime& dt)
{
    os << dt.t.hour << " " << dt.t.min << " " << dt.t.secs << ", "
        << dt.day << " " << dt.mon << " " << dt.year << std::endl;

    return os;
}

BOOST_FIXTURE_TEST_SUITE(TestAstroTime, TestFixture)

BOOST_AUTO_TEST_CASE(ToDecimalHour_1)
{
    double decHour = 18.524167;
    astTime t = {18, 31, 27.0 };

    BOOST_REQUIRE_EQUAL(decHour, time_instance.ToDecimalHour(t));
}

// *** Removed for brevety **/

BOOST_AUTO_TEST_SUITE_END()

CoordinateSystemsTest.cpp 内容:

#define BOOST_TEST_MODULE coordinateSystemsTests
#include <boost/test/included/unit_test.hpp>
#include <iostream>

#include "../../AstroTime/CoordinateSystems.h"


struct TestFixture
{
    CoordinateSystems coord_instance;

    TestFixture()
        : coord_instance()
    {}

    ~TestFixture() = default;
};

bool operator ==(angle const &left, angle const &right)
{
    return(
        left.secs == right.secs
        && left.min == right.min
        && left.degree == right.degree);
}

std::ostream& operator<<(std::ostream& os, const angle& dt)
{
    os << dt.degree << "º " << dt.min << "' " << dt.secs << "\"" << std::endl;

    return os;
}


BOOST_FIXTURE_TEST_SUITE(TestCoordinateSystems, TestFixture)



BOOST_AUTO_TEST_CASE(ToDecimalDegrees_1)
{
    double decDegrees = 182.524167;
    angle degrees = { 182, 31, 27.0 };

    BOOST_REQUIRE_EQUAL(decDegrees, coord_instance.ToDecimalDegrees(degrees));
}




BOOST_AUTO_TEST_SUITE_END()

我得到的错误之一是:

CoordinateSystemsTest.obj : error LNK2005: "public: __thiscall boost::unit_test::ut_detail::auto_test_unit_registrar::auto_test_unit_registrar(class boost::unit_test::test_unit_generator const &,class boost::unit_test::decorator::collector_t &)" (??0auto_test_unit_registrar@ut_detail@unit_test@boost@@QAE@ABVtest_unit_generator@23@AAVcollector_t@decorator@23@@Z) already defined in AstroTimeTest.obj

如果我删除 CoordinateSystemsTest.cpp 中的所有代码，我仍然收到相同的 LINKER 错误。

但如果我也删除这一行:

#include <boost/test/included/unit_test.hpp>

使文件几乎为空，我没有收到任何错误。

错误是由于 Boost Test Usage Variants ，因为我使用的是“单头使用变体”。但我不明白我必须使用什么变体。

如何在 Boost Test 中使用多个 CPP 文件？

Answer 1

每 Header-only with multiple translation units :

It is possible to use the header-only variant of the Unit Test Framework even if the test module has multiple translation units:

• one translation unit should define BOOST_TEST_MODULE and include <boost/test/included/unit_test.hpp>
• all the other translation units should include <boost/test/unit_test.hpp>

我建议有一个专门的 TU 只包含

#define BOOST_TEST_MODULE header-only multiunit test
#include <boost/test/included/unit_test.hpp>

(加上全局装置等)以及您在其他 TU 中的所有实际测试。