Merge branch 'PureAbstract-tuple_to_string' into develop

include/internal/catch_tostring.h

@@ -21,12 +21,46 @@
 #include "catch_objc_arc.hpp"
 #endif
 
+#ifdef CATCH_CPP11_OR_GREATER
+#include <tuple>
+#include <type_traits>
+#endif
+
 namespace Catch {
 
 // Why we're here.
 template<typename T>
 std::string toString( T const& value );
 
+// Built in overloads
+
+std::string toString( std::string const& value );
+std::string toString( std::wstring const& value );
+std::string toString( const char* const value );
+std::string toString( char* const value );
+std::string toString( const wchar_t* const value );
+std::string toString( wchar_t* const value );
+std::string toString( int value );
+std::string toString( unsigned long value );
+std::string toString( unsigned int value );
+std::string toString( const double value );
+std::string toString( const float value );
+std::string toString( bool value );
+std::string toString( char value );
+std::string toString( signed char value );
+std::string toString( unsigned char value );
+
+#ifdef CATCH_CONFIG_CPP11_NULLPTR
+std::string toString( std::nullptr_t );
+#endif
+
+#ifdef __OBJC__
+    std::string toString( NSString const * const& nsstring );
+    std::string toString( NSString * CATCH_ARC_STRONG const& nsstring );
+    std::string toString( NSObject* const& nsObject );
+#endif
+
+  
 namespace Detail {
 
     extern std::string unprintableString;
@@ -166,6 +200,50 @@ std::string toString( std::vector<T,Allocator> const& v ) {
     return Detail::rangeToString( v.begin(), v.end() );
 }
 
+
+#ifdef CATCH_CPP11_OR_GREATER
+  /*
+    toString for tuples
+  */
+namespace TupleDetail {
+  template<
+      typename Tuple,
+      std::size_t N = 0,
+      bool = (N < std::tuple_size<Tuple>::value)
+      >
+  struct ElementPrinter {
+      static void print( const Tuple& tuple, std::ostream& os )
+      {
+          os << ( N ? ", " : " " )
+             << Catch::toString(std::get<N>(tuple));
+          ElementPrinter<Tuple,N+1>::print(tuple,os);
+      }
+  };
+
+  template<
+      typename Tuple,
+      std::size_t N
+      >
+  struct ElementPrinter<Tuple,N,false> {
+      static void print( const Tuple&, std::ostream& ) {}
+  };
+
+}
+
+template<typename ...Types>
+struct StringMaker<std::tuple<Types...>> {
+
+    static std::string convert( const std::tuple<Types...>& tuple )
+    {
+        std::ostringstream os;
+        os << '{';
+        TupleDetail::ElementPrinter<std::tuple<Types...>>::print( tuple, os );
+        os << " }";
+        return os.str();
+    }
+};
+#endif
+
 namespace Detail {
     template<typename T>
     std::string makeString( T const& value ) {
@@ -185,33 +263,6 @@ std::string toString( T const& value ) {
     return StringMaker<T>::convert( value );
 }
 
-// Built in overloads
-
-std::string toString( std::string const& value );
-std::string toString( std::wstring const& value );
-std::string toString( const char* const value );
-std::string toString( char* const value );
-std::string toString( const wchar_t* const value );
-std::string toString( wchar_t* const value );
-std::string toString( int value );
-std::string toString( unsigned long value );
-std::string toString( unsigned int value );
-std::string toString( const double value );
-std::string toString( const float value );
-std::string toString( bool value );
-std::string toString( char value );
-std::string toString( signed char value );
-std::string toString( unsigned char value );
-
-#ifdef CATCH_CONFIG_CPP11_NULLPTR
-std::string toString( std::nullptr_t );
-#endif
-
-#ifdef __OBJC__
-    std::string toString( NSString const * const& nsstring );
-    std::string toString( NSString * CATCH_ARC_STRONG const& nsstring );
-    std::string toString( NSObject* const& nsObject );
-#endif
 
     namespace Detail {
     template<typename InputIterator>

projects/CMake/CMakeLists.txt

@@ -6,6 +6,11 @@ project(Catch)
 get_filename_component(CATCH_DIR "${CMAKE_CURRENT_SOURCE_DIR}" PATH)
 get_filename_component(CATCH_DIR "${CATCH_DIR}" PATH)
 set(SELF_TEST_DIR ${CATCH_DIR}/projects/SelfTest)
+if(USE_CPP11)
+  ## We can't turn this on by default, since it breaks on travis
+  message(STATUS "Enabling C++11")
+  set(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
+endif()
 
 # define the sources of the self test
 set(SOURCES
@@ -25,6 +30,7 @@ set(SOURCES
     ${SELF_TEST_DIR}/ToStringPair.cpp
     ${SELF_TEST_DIR}/ToStringVector.cpp
     ${SELF_TEST_DIR}/ToStringWhich.cpp
+    ${SELF_TEST_DIR}/ToStringTuple.cpp
 )
 
 # configure the executable

projects/SelfTest/ToStringTuple.cpp

@@ -0,0 +1,48 @@
+#include "catch.hpp"
+
+#ifdef CATCH_CPP11_OR_GREATER
+
+TEST_CASE( "tuple<>", "[toString][tuple]" )
+{
+    typedef std::tuple<> type;
+    CHECK( "{ }" == Catch::toString(type{}) );
+    type value {};
+    CHECK( "{ }" == Catch::toString(value) );
+}
+
+TEST_CASE( "tuple<int>", "[toString][tuple]" )
+{
+    typedef std::tuple<int> type;
+    CHECK( "{ 0 }" == Catch::toString(type{0}) );
+}
+
+
+TEST_CASE( "tuple<float,int>", "[toString][tuple]" )
+{
+    typedef std::tuple<float,int> type;
+    CHECK( "1.2f" == Catch::toString(float(1.2)) );
+    CHECK( "{ 1.2f, 0 }" == Catch::toString(type{1.2,0}) );
+}
+
+TEST_CASE( "tuple<string,string>", "[toString][tuple]" )
+{
+    typedef std::tuple<std::string,std::string> type;
+    CHECK( "{ \"hello\", \"world\" }" == Catch::toString(type{"hello","world"}) );
+}
+
+TEST_CASE( "tuple<tuple<int>,tuple<>,float>", "[toString][tuple]" )
+{
+    typedef std::tuple<std::tuple<int>,std::tuple<>,float> type;
+    type value { std::tuple<int>{42}, {}, 1.2f };
+    CHECK( "{ { 42 }, { }, 1.2f }" == Catch::toString(value) );
+}
+
+TEST_CASE( "tuple<nullptr,int,const char *>", "[toString][tuple]" )
+{
+    typedef std::tuple<std::nullptr_t,int,const char *> type;
+    type value { nullptr, 42, "Catch me" };
+    CHECK( "{ nullptr, 42, \"Catch me\" }" == Catch::toString(value) );
+}
+
+#endif /* #ifdef CATCH_CPP11_OR_GREATER */
+