Re: [Boost-users] [test] how to test std::pair with BOOST_TEST

On 5/29/2016 8:10 AM, Tan, Tom (Shanghai) wrote:

The following snippet does not compile with VS2015 and boost 1.61. What should the correct way to do it? Thanks.

// compile with cl.exe /EHSc

#define BOOST_TEST_MODULE pair

#include

std::pair v()

{

return std::make_pair(0, 0);

}

BOOST_AUTO_TEST_CASE(range)

{

BOOST_TEST(std::make_pair(0, 0) == v());

}

Here’s the error message:

C:\3rd\boost_1_61_0\boost/test/tools/assertion.hpp(163): error C2678: binary '==': no operator found which takes a left-hand operand of type 'std::pair' (or there is no acceptable conversion)

std::make_pair(0,0) returns a value with the type std::pair whereas v() returns a variable of the type std::pair. These are different types and there is no equality operator to compare them.