Catch简介

1. Catch 是一个c++ 单元测试框架
2. Catch是一个单头文件的测试框架，使用简单，几乎不需要配置或安装其它依赖

Get Started

下载Catch头文件

• github.com/catchorg/Catch2 下载catch2.hpp文件
• 将catch2.hpp文件放入到本地项目

创建测试项目，目录结构如下

.
├── build
├── CMakeLists.txt
├── main.cpp
└── tests
    ├── catch.hpp
    └── test.cpp

写测试demo

打开test.cpp

#define CATCH_CONFIG_MAIN  // This tells Catch to provide a main() - only do this in one cpp file
#include "catch.hpp"

unsigned int Factorial( unsigned int number ) {
    return number <= 1 ? number : Factorial(number-1)*number;
}

TEST_CASE( "Factorials are computed", "[factorial]" ) {
    REQUIRE( Factorial(1) == 1 );
    REQUIRE( Factorial(2) == 2 );
    REQUIRE( Factorial(3) == 6 );
    REQUIRE( Factorial(10) == 3628800 );
}

编译

1.修改CMakeLists.txt：

cmake_minimum_required(VERSION 3.14)
project(catchDemo)

set(CMAKE_CXX_STANDARD 14)

add_executable(catchDemo tests/test.cpp)

2.编译

cd build
cmake ../  
make

3.获得可执行文件

image.png

运行可执行文件

• ./catchDemo

• 得到运行结果：

  
  image.png

参考文档：

• https://github.com/catchorg/Catch2
• https://medium.com/dsckiit/a-guide-to-using-catch2-for-unit-testing-in-c-f0f5450d05fb