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diff --git a/unittest/Catch/include/internal/catch_result_builder.hpp b/unittest/Catch/include/internal/catch_result_builder.hpp
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+++ b/unittest/Catch/include/internal/catch_result_builder.hpp
@@ -0,0 +1,161 @@
+/*
+ *  Created by Phil on 28/5/2014.
+ *  Copyright 2014 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)
+ */
+#ifndef TWOBLUECUBES_CATCH_RESULT_BUILDER_HPP_INCLUDED
+#define TWOBLUECUBES_CATCH_RESULT_BUILDER_HPP_INCLUDED
+
+#include "catch_result_builder.h"
+#include "catch_context.h"
+#include "catch_interfaces_config.h"
+#include "catch_interfaces_runner.h"
+#include "catch_interfaces_capture.h"
+#include "catch_interfaces_registry_hub.h"
+#include "catch_wildcard_pattern.hpp"
+
+namespace Catch {
+
+    std::string capturedExpressionWithSecondArgument( std::string const& capturedExpression, std::string const& secondArg ) {
+        return secondArg.empty() || secondArg == "\"\""
+            ? capturedExpression
+            : capturedExpression + ", " + secondArg;
+    }
+    ResultBuilder::ResultBuilder(   char const* macroName,
+                                    SourceLineInfo const& lineInfo,
+                                    char const* capturedExpression,
+                                    ResultDisposition::Flags resultDisposition,
+                                    char const* secondArg )
+    :   m_assertionInfo( macroName, lineInfo, capturedExpressionWithSecondArgument( capturedExpression, secondArg ), resultDisposition ),
+        m_shouldDebugBreak( false ),
+        m_shouldThrow( false )
+    {}
+
+    ResultBuilder& ResultBuilder::setResultType( ResultWas::OfType result ) {
+        m_data.resultType = result;
+        return *this;
+    }
+    ResultBuilder& ResultBuilder::setResultType( bool result ) {
+        m_data.resultType = result ? ResultWas::Ok : ResultWas::ExpressionFailed;
+        return *this;
+    }
+    ResultBuilder& ResultBuilder::setLhs( std::string const& lhs ) {
+        m_exprComponents.lhs = lhs;
+        return *this;
+    }
+    ResultBuilder& ResultBuilder::setRhs( std::string const& rhs ) {
+        m_exprComponents.rhs = rhs;
+        return *this;
+    }
+    ResultBuilder& ResultBuilder::setOp( std::string const& op ) {
+        m_exprComponents.op = op;
+        return *this;
+    }
+
+    void ResultBuilder::endExpression() {
+        m_exprComponents.testFalse = isFalseTest( m_assertionInfo.resultDisposition );
+        captureExpression();
+    }
+
+    void ResultBuilder::useActiveException( ResultDisposition::Flags resultDisposition ) {
+        m_assertionInfo.resultDisposition = resultDisposition;
+        m_stream.oss << Catch::translateActiveException();
+        captureResult( ResultWas::ThrewException );
+    }
+
+    void ResultBuilder::captureResult( ResultWas::OfType resultType ) {
+        setResultType( resultType );
+        captureExpression();
+    }
+    void ResultBuilder::captureExpectedException( std::string const& expectedMessage ) {
+        if( expectedMessage.empty() )
+            captureExpectedException( Matchers::Impl::Generic::AllOf<std::string>() );
+        else
+            captureExpectedException( Matchers::Equals( expectedMessage ) );
+    }
+
+    void ResultBuilder::captureExpectedException( Matchers::Impl::Matcher<std::string> const& matcher ) {
+
+        assert( m_exprComponents.testFalse == false );
+        AssertionResultData data = m_data;
+        data.resultType = ResultWas::Ok;
+        data.reconstructedExpression = m_assertionInfo.capturedExpression;
+
+        std::string actualMessage = Catch::translateActiveException();
+        if( !matcher.match( actualMessage ) ) {
+            data.resultType = ResultWas::ExpressionFailed;
+            data.reconstructedExpression = actualMessage;
+        }
+        AssertionResult result( m_assertionInfo, data );
+        handleResult( result );
+    }
+
+    void ResultBuilder::captureExpression() {
+        AssertionResult result = build();
+        handleResult( result );
+    }
+    void ResultBuilder::handleResult( AssertionResult const& result )
+    {
+        getResultCapture().assertionEnded( result );
+
+        if( !result.isOk() ) {
+            if( getCurrentContext().getConfig()->shouldDebugBreak() )
+                m_shouldDebugBreak = true;
+            if( getCurrentContext().getRunner()->aborting() || (m_assertionInfo.resultDisposition & ResultDisposition::Normal) )
+                m_shouldThrow = true;
+        }
+    }
+    void ResultBuilder::react() {
+        if( m_shouldThrow )
+            throw Catch::TestFailureException();
+    }
+
+    bool ResultBuilder::shouldDebugBreak() const { return m_shouldDebugBreak; }
+    bool ResultBuilder::allowThrows() const { return getCurrentContext().getConfig()->allowThrows(); }
+
+    AssertionResult ResultBuilder::build() const
+    {
+        assert( m_data.resultType != ResultWas::Unknown );
+
+        AssertionResultData data = m_data;
+
+        // Flip bool results if testFalse is set
+        if( m_exprComponents.testFalse ) {
+            if( data.resultType == ResultWas::Ok )
+                data.resultType = ResultWas::ExpressionFailed;
+            else if( data.resultType == ResultWas::ExpressionFailed )
+                data.resultType = ResultWas::Ok;
+        }
+
+        data.message = m_stream.oss.str();
+        data.reconstructedExpression = reconstructExpression();
+        if( m_exprComponents.testFalse ) {
+            if( m_exprComponents.op == "" )
+                data.reconstructedExpression = "!" + data.reconstructedExpression;
+            else
+                data.reconstructedExpression = "!(" + data.reconstructedExpression + ")";
+        }
+        return AssertionResult( m_assertionInfo, data );
+    }
+    std::string ResultBuilder::reconstructExpression() const {
+        if( m_exprComponents.op == "" )
+            return m_exprComponents.lhs.empty() ? m_assertionInfo.capturedExpression : m_exprComponents.op + m_exprComponents.lhs;
+        else if( m_exprComponents.op == "matches" )
+            return m_exprComponents.lhs + " " + m_exprComponents.rhs;
+        else if( m_exprComponents.op != "!" ) {
+            if( m_exprComponents.lhs.size() + m_exprComponents.rhs.size() < 40 &&
+                m_exprComponents.lhs.find("\n") == std::string::npos &&
+                m_exprComponents.rhs.find("\n") == std::string::npos )
+                return m_exprComponents.lhs + " " + m_exprComponents.op + " " + m_exprComponents.rhs;
+            else
+                return m_exprComponents.lhs + "\n" + m_exprComponents.op + "\n" + m_exprComponents.rhs;
+        }
+        else
+            return "{can't expand - use " + m_assertionInfo.macroName + "_FALSE( " + m_assertionInfo.capturedExpression.substr(1) + " ) instead of " + m_assertionInfo.macroName + "( " + m_assertionInfo.capturedExpression + " ) for better diagnostics}";
+    }
+
+} // end namespace Catch
+
+#endif // TWOBLUECUBES_CATCH_RESULT_BUILDER_HPP_INCLUDED