catch2/projects/SelfTest/ToStringPair.cpp
2014-09-01 18:09:37 +01:00

52 lines
1.7 KiB
C++

#include "catch.hpp"
// === Pair ===
namespace Catch {
// Note: If we put this in the right place in catch_tostring, then
// we can make it an overload of Catch::toString
template<typename T1, typename T2>
struct StringMaker<std::pair<T1,T2> > {
static std::string convert( const std::pair<T1,T2>& pair ) {
std::ostringstream oss;
oss << "{ "
<< toString( pair.first )
<< ", "
<< toString( pair.second )
<< " }";
return oss.str();
}
};
}
TEST_CASE( "std::pair<int,std::string> -> toString", "[toString][pair]" )
{
std::pair<int,std::string> value( 34, "xyzzy" );
REQUIRE( Catch::toString( value ) == "{ 34, \"xyzzy\" }" );
}
TEST_CASE( "std::pair<int,const std::string> -> toString", "[toString][pair]" )
{
std::pair<int,const std::string> value( 34, "xyzzy" );
REQUIRE( Catch::toString(value) == "{ 34, \"xyzzy\" }" );
}
TEST_CASE( "std::vector<std::pair<std::string,int> > -> toString", "[toString][pair]" )
{
std::vector<std::pair<std::string,int> > pr;
pr.push_back( std::make_pair("green", 55 ) );
REQUIRE( Catch::toString( pr ) == "{ { \"green\", 55 } }" );
}
// This is pretty contrived - I figure if this works, anything will...
TEST_CASE( "pair<pair<int,const char *,pair<std::string,int> > -> toString", "[toString][pair]" )
{
typedef std::pair<int,const char *> left_t;
typedef std::pair<std::string,int> right_t;
left_t left( 42, "Arthur" );
right_t right( "Ford", 24 );
std::pair<left_t,right_t> pair( left, right );
REQUIRE( Catch::toString( pair ) == "{ { 42, \"Arthur\" }, { \"Ford\", 24 } }" );
}