Started adding tests for Approx

include/internal/catch_approx.hpp

@@ -47,6 +47,17 @@ namespace Catch
                 return fabs( lhs - rhs.m_d ) < rhs.m_epsilon * (rhs.m_scale + (std::max)( fabs(lhs), fabs(rhs.m_d) ) );
             }
             
+            ///////////////////////////////////////////////////////////////////////////
+            template<typename T>
+            friend bool operator == 
+            (
+                const Approx& lhs,
+                const T& rhs
+            )
+            {
+                return operator==( rhs, lhs );
+            }
+            
             ///////////////////////////////////////////////////////////////////////////
             template<typename T>
             friend bool operator != 
@@ -58,7 +69,18 @@ namespace Catch
                 return !operator==( lhs, rhs );
             }
 
-
+            ///////////////////////////////////////////////////////////////////////////
+            template<typename T>
+            friend bool operator != 
+            (
+                const Approx& lhs,
+                const T& rhs
+            )
+            {
+                return !operator==( rhs, lhs );
+            }
+            
+            
             ///////////////////////////////////////////////////////////////////////////
             Approx& epsilon
             (

projects/SelfTest/ApproxTests.cpp

@@ -0,0 +1,31 @@
+/*
+ *  ApproxTests.cpp
+ *  Catch - Test
+ *
+ *  Created by Phil on 28/04/2011.
+ *  Copyright 2011 Two Blue Cubes Ltd. All rights reserved.
+ *
+ *  Distributed under the Boost Software License, Version 1.0. (See accompanying
+ *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+#include "catch.hpp"
+
+///////////////////////////////////////////////////////////////////////////////
+TEST_CASE
+(
+    "./succeeding/Approx/simple", 
+    "Some simple comparisons between doubles"
+ )
+{
+    double d = 1.23;
+    
+    REQUIRE( d == Approx( 1.23 ) );
+    REQUIRE( d != Approx( 1.22 ) );
+    REQUIRE( d != Approx( 1.24 ) );
+
+    REQUIRE( Approx( d ) == 1.23 );
+    REQUIRE( Approx( d ) != 1.22 );
+    REQUIRE( Approx( d ) != 1.24 );
+}