我想使用GTest并让这个例子起作用。现在我想测试自己的代码,但是我遇到了链接问题。
我在stackoverflow上搜索,发现了类似的问题,但答案并没有帮助我解决问题。
我的档案是:
的CMakeLists.txt
cmake_minimum_required(VERSION 2.6)
SET(CMAKE_CXX_FLAGS "-std=gnu++11")
# Locate GTest
find_package(GTest REQUIRED)
include_directories(${GTEST_INCLUDE_DIRS})
file(GLOB files
Datahandler.h
Datahandler.cpp
)
# Link runTests with what we want to test and the GTest and pthread library
add_executable(runTests tests.cpp ${files} )
target_link_libraries(runTests ${GTEST_LIBRARIES} pthread)
tests.cpp
#include "DataHandler.h"
#include <gtest/gtest.h>
TEST(checkFilled, All){
DataHandler handler("loc", "prot", 1);
handler.filledElement[1] = 1;
ASSERT_EQ(1, handler.checkFilled(1));
ASSERT_EQ(0, handler.checkFilled(2));
ASSERT_EQ(1, handler.checkFilled(8));
ASSERT_EQ(0, handler.checkFilled(9));
}
int main(int argc, char **argv) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
我得到的错误是:
CMakeFiles/runTests.dir/tests.cpp.o: In function `checkFilled_All_Test::TestBody()':
tests.cpp:(.text+0x121): undefined reference to `DataHandler::DataHandler(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned char)'
tests.cpp:(.text+0x172): undefined reference to `DataHandler::checkFilled(unsigned char)'
tests.cpp:(.text+0x271): undefined reference to `DataHandler::checkFilled(unsigned char)'
tests.cpp:(.text+0x382): undefined reference to `DataHandler::checkFilled(unsigned char)'
tests.cpp:(.text+0x48d): undefined reference to `DataHandler::checkFilled(unsigned char)'
collect2: error: ld returned 1 exit status
CMakeFiles/runTests.dir/build.make:95: recipe for target 'runTests' failed
make[2]: *** [runTests] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/runTests.dir/all' failed
make[1]: *** [CMakeFiles/runTests.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
我几乎可以肯定它与包含或链接问题有关,但我找不到合适的语法。
答案 0 :(得分:1)
您的CMake项目有几点:
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
使用CMAKE_CXX_STANDARD
时,最好不要删除以前的值:
SET(CMAKE_CXX_STANDARD 11)
SET(CMAKE_CXX_STANDARD_REQUIRED ON)
默认情况下,该值为空,因此不应在此处更改任何内容。无论如何,要求C ++ 11,您可以考虑使用file(GLOB files
Datahandler.h
Datahandler.cpp
)
:
GLOB
下一步:
set
如果使用set(files
Datahandler.h
Datahandler.cpp
)
,则应传递文件模式,而不是文件路径。无论如何,来自doc:
我们不建议使用GLOB从源树中收集源文件列表。如果在添加或删除源时没有更改CMakeLists.txt文件,则生成的构建系统无法知道何时要求CMake重新生成。
请考虑include_directories(${GTEST_INCLUDE_DIRS})
#...
target_link_libraries(runTests ${GTEST_LIBRARIES} pthread)
:
${GTEST_LIBRARIES}
下一步:
target_link_libraries(runTests GTest::Main)
您可以考虑imported targets:
而不是过时的GTest::Main
include_directories
pthread
将通过导入的目标处理包含目录,因此您无需致电GTest::Main
。此外,它将为线程库添加依赖项,因此我非常确定您可以删除cmake_minimum_required(VERSION 2.8.11)
(待测试)。最后,cmake_minimum_required(VERSION 2.8.11)
SET(CMAKE_CXX_STANDARD 11)
SET(CMAKE_CXX_STANDARD_REQUIRED ON)
set(files
Datahandler.h
Datahandler.cpp
)
# Locate GTest
find_package(GTest REQUIRED)
# Link runTests with what we want to test and the GTest library
add_executable(runTests tests.cpp ${files})
target_link_libraries(runTests GTest::Main)
包含主要功能的基本实现,它完全按照您的操作执行,因此您可以删除自己的功能。
请注意,您需要升级所需的最低版本的CMake才能使导入的目标完全可用:
test.cpp
因此,您2016年的CMake项目应如下所示:
#include "DataHandler.h"
#include <gtest/gtest.h>
TEST(checkFilled, All){
DataHandler handler("loc", "prot", 1);
handler.filledElement[1] = 1;
ASSERT_EQ(1, handler.checkFilled(1));
ASSERT_EQ(0, handler.checkFilled(2));
ASSERT_EQ(1, handler.checkFilled(8));
ASSERT_EQ(0, handler.checkFilled(9));
}
while (src.hasNext()) {
if (src.hasNext()) {
:
{{1}}