gtest - Google Test 설치 및 테스트

gtest

Google C++ Test Framework. 

Unit Test기반 TDD 개발 하기 좋음

gtest link

github

https://github.com/google/googletest

gtest guide

https://google.github.io/googletest/

Env

C++14 이상 필요

gtest installation

$ git clone https://github.com/google/googletest.git

$ ls

$ cd googletest

$ mkdir build.tmp

$ cd build.tmp

$ cmake -DCMAKE_CXX_FLAGS=-std=c++14 ..

$ make

$ make install

Test

CMakeLists.txt

cmake_minimum_required(VERSION 3.14)

project(my_project)

# GoogleTest requires at least C++14

set(CMAKE_CXX_STANDARD 14)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

include(FetchContent)

FetchContent_Declare(

  googletest

  URL https://github.com/google/googletest/archive/03597a01ee50ed33e9dfd640b249b4be3799d395.zip

)

# For Windows: Prevent overriding the parent project's compiler/linker settings

set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)

FetchContent_MakeAvailable(googletest)

enable_testing()

add_executable(

  hello_test

  hello_test.cc

)

target_link_libraries(

  hello_test

  GTest::gtest_main

)

include(GoogleTest)

gtest_discover_tests(hello_test)

hello_test.cc

#include <gtest/gtest.h>

// Demonstrate some basic assertions.

TEST(HelloTest, BasicAssertions) {

  // Expect two strings not to be equal.

  EXPECT_STRNE("hello", "world");

  // Expect equality.

  EXPECT_EQ(7 * 6, 42);

}

build.sh

#!/bin/bash

cmake -S . -B build && cmake --build build && cd build && ctest

COMMAND

$ chmod +x ./build.sh

$ ./build.sh

결과

-- The C compiler identification is GNU 9.4.0

-- The CXX compiler identification is GNU 9.4.0

-- Check for working C compiler: /usr/bin/cc

-- Check for working C compiler: /usr/bin/cc -- works

-- Detecting C compiler ABI info

-- Detecting C compiler ABI info - done

-- Detecting C compile features

-- Detecting C compile features - done

-- Check for working CXX compiler: /usr/bin/c++

-- Check for working CXX compiler: /usr/bin/c++ -- works

-- Detecting CXX compiler ABI info

-- Detecting CXX compiler ABI info - done

-- Detecting CXX compile features

-- Detecting CXX compile features - done

-- Found Python: /usr/bin/python3.8 (found version "3.8.10") found components: Interpreter

-- Looking for pthread.h

-- Looking for pthread.h - found

-- Performing Test CMAKE_HAVE_LIBC_PTHREAD

-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed

-- Looking for pthread_create in pthreads

-- Looking for pthread_create in pthread

-- Looking for pthread_create in pthread - found

-- Found Threads: TRUE

-- Configuring done

-- Generating done

-- Build files have been written to: /root/gtest_tmp/1/build

Scanning dependencies of target gtest

[ 10%] Building CXX object _deps/googletest-build/googletest/CMakeFiles/gtest.dir/src/gtest-all.cc.o

[ 20%] Linking CXX static library ../../../lib/libgtest.a

[ 20%] Built target gtest

Scanning dependencies of target gtest_main

[ 30%] Building CXX object _deps/googletest-build/googletest/CMakeFiles/gtest_main.dir/src/gtest_main.cc.o

[ 40%] Linking CXX static library ../../../lib/libgtest_main.a

[ 40%] Built target gtest_main

Scanning dependencies of target hello_test

[ 50%] Building CXX object CMakeFiles/hello_test.dir/hello_test.cc.o

[ 60%] Linking CXX executable hello_test

[ 60%] Built target hello_test

Scanning dependencies of target gmock

[ 70%] Building CXX object _deps/googletest-build/googlemock/CMakeFiles/gmock.dir/src/gmock-all.cc.o

[ 80%] Linking CXX static library ../../../lib/libgmock.a

[ 80%] Built target gmock

Scanning dependencies of target gmock_main

[ 90%] Building CXX object _deps/googletest-build/googlemock/CMakeFiles/gmock_main.dir/src/gmock_main.cc.o

[100%] Linking CXX static library ../../../lib/libgmock_main.a

[100%] Built target gmock_main

Test project /root/gtest_tmp/1/build

    Start 1: HelloTest.BasicAssertions

1/1 Test #1: HelloTest.BasicAssertions ........   Passed    0.00 sec

100% tests passed, 0 tests failed out of 1

Total Test time (real) =   0.00 sec