CPPTest实战演示（CppTest libssh）

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1 概述

CppTest是一个可移植、功能强大但简单的单元测试框架，用于处理C++中的自动化测试。重点在于可用性和可扩展性。支持多种输出格式，并且可以轻松添加新的输出格式。

CppTest下载地址Sourceforge
Github地址

下面编写实际测试用例，来熟练CppTest库使用。

2 实例

2.1 接口

该接口是对libssh库C++封装，管理shh连接会话，定义如下：

namespace ssh
{
class Session
{
public:Session();~Session();void set_host(const char* host);void set_port(int port);void set_port(const char* port);void set_user(const char* user);bool connect(int timeout = 10);void disconnect();bool verify();AuthMethod auth_method(const char *username);bool login(const char* password);bool login(const char* user, const char* password);bool login_by_interactive(const char* user, const char* password);bool login_by_prikey(const char* user, const char* privkeyfile);bool login_by_pubkey(const char* user, const char* pubkeyfile);const char* error();
};
}

2.2 测试用例

2.2.1 用例定义

class SeesionSuite : public Test::Suite
{ssh::Session sessioin_;std::string privkeyfile_ = "d:/id_rsa";int timeout = 5;
public:SeesionSuite(){TEST_ADD(SeesionSuite::connect_without_host);TEST_ADD(SeesionSuite::connect_error_host);TEST_ADD(SeesionSuite::connect_not_unconnected);TEST_ADD(SeesionSuite::connect_invalid_host);TEST_ADD(SeesionSuite::connect_without_port);TEST_ADD(SeesionSuite::connect_error_port);TEST_ADD(SeesionSuite::connect_correct_port);TEST_ADD(SeesionSuite::disconnect);TEST_ADD(SeesionSuite::login);}
private:void connect_without_host();void connect_error_host();void connect_not_unconnected();void connect_invalid_host();void connect_without_port();void connect_error_port();void connect_correct_port();void disconnect();void login();void error();
};

2.2.1 用例实现

#include "SessionTest.h"
#include <iostream>void SeesionSuite::connect_without_host()
{TEST_ASSERT_EQUALS_MSG(false, sessioin_.connect(timeout), "not set host, cannot connected")error();
}void SeesionSuite::connect_error_host()
{sessioin_.set_host("127.0.0.1");TEST_ASSERT_EQUALS_MSG(false, sessioin_.connect(timeout), "error host, cannot connected")error();
}void SeesionSuite::connect_not_unconnected()
{sessioin_.set_host("20.20.20.109");TEST_ASSERT_EQUALS_MSG(false, sessioin_.connect(timeout), "not unconnected, cannot connected")error();
}void SeesionSuite::connect_invalid_host()
{sessioin_.set_host("x.y.z.d");sessioin_.disconnect();TEST_ASSERT_EQUALS_MSG(false, sessioin_.connect(timeout), "error host, cannot connected")error();
}void SeesionSuite::connect_without_port()
{sessioin_.set_host("20.20.20.109");sessioin_.disconnect();TEST_ASSERT_EQUALS_MSG(true, sessioin_.connect(timeout), sessioin_.error())
}void SeesionSuite::connect_error_port()
{sessioin_.set_port(23);sessioin_.disconnect();TEST_ASSERT_EQUALS_MSG(false, sessioin_.connect(timeout), sessioin_.error())std::cerr << sessioin_.error() << ":23" << std::endl;
}void SeesionSuite::connect_correct_port()
{sessioin_.set_port(22);sessioin_.disconnect();TEST_ASSERT_EQUALS_MSG(true, sessioin_.connect(timeout), sessioin_.error())
}void SeesionSuite::disconnect()
{sessioin_.disconnect();
}void SeesionSuite::login()
{sessioin_.set_host("20.20.20.109");sessioin_.set_port(22);TEST_ASSERT_EQUALS_MSG(true, sessioin_.connect(timeout), sessioin_.error())TEST_ASSERT_EQUALS_MSG(true, sessioin_.verify(), "verify is failed")ssh::AuthMethod method = sessioin_.auth_method("james");TEST_ASSERT_EQUALS_MSG(false, ssh::isUnknowOfAuthMethod(method), "Unknow auth method!")if(ssh::isPubKeyOfAuthMethod(method) && !privkeyfile_.empty())TEST_ASSERT_EQUALS_MSG(true, sessioin_.login_by_prikey("james", privkeyfile_.c_str()), "Pubkey's login is failed!")else if(ssh::isPasswordOfAuthMethod(method))TEST_ASSERT_EQUALS_MSG(true, sessioin_.login("james", "james010"), "Password's login is failed!")else if(ssh::isInteractiveOfAuthMethod(method))TEST_ASSERT_EQUALS_MSG(true, sessioin_.login_by_interactive("james", "james010"), "Interactive's login is failed!")
}void SeesionSuite::error()
{std::cerr << sessioin_.error() << std::endl;
}

说明：

TEST_ASSERT_EQUALS_MSG(expected, got, msg)是CppTest库定义的宏，如果预期值expected与实际值got不同则报错，错误信息为msg

3 运行用例

3.1 主函数

int main(int argc, char *argv[])
{Test::Suite mainSuite;Test::TextOutput output(Test::TextOutput::Verbose);mainSuite.add(std::unique_ptr<Test::Suite>(new SeesionSuite));mainSuite.run(output, true);return 0;
}

3.1 运行结果

Hostname required
Timeout connecting to 127.0.0.1
ssh_socket_connect called on socket not unconnected
Failed to resolve hostname x.y.z.d ()
Timeout connecting to 20.20.20.109:23SeesionSuite: 9/9, 100% correct in 10.094000 seconds
Total: 9 tests, 100% correct in 10.094000 seconds