c++ - 用于 Google 测试的 CMake

Question

我正在尝试按照本教程运行 Google 测试文件，但我在使用 CMakeLists.txt 时遇到了一些问题。 .

https://www.eriksmistad.no/getting-started-with-google-test-on-ubuntu/

CMakeLists.txt:

cmake_minimum_required(VERSION 2.6)

# Locate GTest
find_package(GTest REQUIRED)
include_directories(${GTEST_INCLUDE_DIRS})

# Link runTests with what we want to test and the GTest and pthread library
add_executable(runTests tests.cpp)
target_link_libraries(runTests ${GTEST_LIBRARIES} pthread)

这里的 runTests 到底是什么？它是我程序的 main() 文件吗？我应该如何根据我的程序替换它？目前，我在使用 make 时遇到此错误:

/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
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

main.cpp:(我也尝试将这部分移动到tests.cpp文件的末尾，但仍然没有用)

#include <iostream>
#include "Player.h"
#include "gtest/gtest.h"

using namespace std;

int main(int argc, char **argv) 
{
   ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
}

播放器.h

#ifndef PLAYER_H
#define PLAYER_H

#include <iostream>  
using namespace std;

class Player
{

    int inventory;

public:
    Player();
    int decreaseInventory(int numOfBeers);
    void setInventory(int newInventory);
    int getBackOrder();
    int getCost();
    int getInventory();

    bool operator ==(Player& p);
};

Player::Player()
{
    cout << " Default Player Constructor\n";
    inventory = 12;
    backorder = 0;
    cost = 0;
    orderDelay = 0;
    shipmentDeplay = 0;
}

void Player::setInventory(int newInventory)
{
    inventory = newInventory;
}

int Player::decreaseInventory(int numOfBeers)
{
    inventory = inventory - numOfBeers;
}

int Player::getInventory()
{
    return inventory;
}


#endif

测试.cpp

#include "gtest/gtest.h"
#include "Player.h"

TEST(playerTest, decreaseInventoryTest ) {

    Player p;
    int curr_inv = p.getInventory();
    EXPECT_EQ(curr_inv-3, p.decreaseInventory(3));

}

我怎样才能运行我的测试？

Answer 1

what exactly is runTests here? Is it my program's main() file? How should I replace it according to my program?

runTests是您尝试构建的可执行文件的名称。它需要一个 main就像任何可执行文件一样，有两种选择:1) 自己编写或 2) 使用 gtest 提供的那个。如果您想使用选项 1，请添加 main.cpp到 add_executable线。

add_executable(runTests tests.cpp main.cpp)

我认为更好的选择是使用 main由 GTest 提供，因为它为您提供了一些命令行参数。您可以通过将它添加到您的 target_link_libraries 来使用它。线。

target_link_libraries(runTests ${GTEST_LIBRARIES} ${GTEST_MAIN_LIBRARIES} pthread)