VS2012:单元测试出错:Assert :: AreEqual(object,object)不起作用 [英] VS2012 : Error with unit test : Assert::AreEqual( object, object ) didn't work
问题描述
我在VS 2012上使用Visual Studio本机单元测试时遇到一个奇怪的问题。
我有一个这样的Coordinates类:
I come to you for a strange problem when I use the Visual Studio Native Unit Test on VS 2012. I've a Coordinates class like that:
#ifndef COORDINATES_HPP
#define COORDINATES_HPP
#include <iostream>
namespace Core {
class Coordinates {
public:
Coordinates();
Coordinates( int x, int y );
Coordinates( const Coordinates © );
~Coordinates();
void operator=( Coordinates coordinates );
void operator+=( Coordinates coordinates );
void operator-=( Coordinates coordinates );
Coordinates operator+( Coordinates coordinates );
Coordinates operator-( Coordinates coordinates );
bool operator==( Coordinates coordinates );
bool operator!=( Coordinates coordinates );
int getX() const { return m_x; }
int getY() const { return m_y; }
void setX( const int &val ) { m_x = val; }
void setY( const int &val ) { m_y = val; }
protected:
int m_x, m_y;
};
}
所以当我使用时出现问题:
Assert :: AreEqual (Coordinates(0,0),Coordinates(0,0));
So the problem appear when I use : Assert::AreEqual( Coordinates(0,0), Coordinates(0,0) );
发送的错误为:
错误1错误C2678:二进制'==' :没有找到采用类型为'const Core :: Coordinates'的左侧操作数的运算符(或没有可接受的转换)c:\程序文件(x86)\ Microsoft Visual Studio 11.0\vc\unittest\ \include\cppunittestassert.h 129 1 UnitTest1
The error sended is : Error 1 error C2678: binary '==' : no operator found which takes a left-hand operand of type 'const Core::Coordinates' (or there is no acceptable conversion) c:\program files (x86)\microsoft visual studio 11.0\vc\unittest\include\cppunittestassert.h 129 1 UnitTest1
您有解决的办法吗?
PS :对不起,我的英语不是我的母语。
PS: Sorry for my english, is not my native language.
推荐答案
创建分配运算符(即
The error received after creating your assignment operator, ie
错误1错误C2338:测试编写者必须为类class std :: basic_string,class std :: allocator定义ToString的特化> __cdecl Microsoft :: VisualStudio :: CppUnitTestFramework :: ToString(const class Core :: Coordinates&)。
Error 1 error C2338: Test writer must define specialization of ToString for your class class std::basic_string,class std::allocator > __cdecl Microsoft::VisualStudio::CppUnitTestFramework::ToString(const class Core::Coordinates &).
与需要为单元测试提供一种打印期望和接收的值的方法有关。通过在 Microsoft :: VisualStudio :: CppUnitTestFramework
命名空间中创建ToString函数的模板特化来实现。例如:
is related to needing to provide a way for the unit tests to print out the values it expected and received. You do this by creating a template specialization of the ToString function in the Microsoft::VisualStudio::CppUnitTestFramework
namespace. For example:
namespace Microsoft{
namespace VisualStudio {
namespace CppUnitTestFramework {
template<>
static std::wstring ToString<Coordinates>(const Coordinates & coord) {
return L"Some string representing coordinate.";
}
}
}
}
之后,应该运行单元测试。
After that, the unit tests should run.
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