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 <boost/test/included/unit_test.hpp>
std::pair<uint32_t, uint32_t> 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<int,int>' (or there is no acceptable conversion)
std::make_pair(0,0) returns a value with the type std::pair<int,int> whereas v() returns a variable of the type std::pair<uint32_t,uint32_t>. These are different types and there is no equality operator to compare them.