catch_assertionhandler.h

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/*
 *  Created by Phil on 8/8/2017.
 *  Copyright 2017 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_ASSERTIONHANDLER_H_INCLUDED
#define TWOBLUECUBES_CATCH_ASSERTIONHANDLER_H_INCLUDED
 
#include "catch_assertioninfo.h"
#include "catch_decomposer.h"
#include "catch_interfaces_capture.h"
 
namespace Catch {
 
    struct TestFailureException{};
    struct AssertionResultData;
    struct IResultCapture;
    class RunContext;
 
    class LazyExpression {
        friend class AssertionHandler;
        friend struct AssertionStats;
        friend class RunContext;
 
        ITransientExpression const* m_transientExpression = nullptr;
        bool m_isNegated;
    public:
        LazyExpression( bool isNegated );
        LazyExpression( LazyExpression const& other );
        LazyExpression& operator = ( LazyExpression const& ) = delete;
 
        explicit operator bool() const;
 
        friend auto operator << ( std::ostream& os, LazyExpression const& lazyExpr ) -> std::ostream&;
    };
 
    struct AssertionReaction {
        bool shouldDebugBreak = false;
        bool shouldThrow = false;
    };
 
    class AssertionHandler {
        AssertionInfo m_assertionInfo;
        AssertionReaction m_reaction;
        bool m_completed = false;
        IResultCapture& m_resultCapture;
 
    public:
        AssertionHandler
            (   StringRef const& macroName,
                SourceLineInfo const& lineInfo,
                StringRef capturedExpression,
                ResultDisposition::Flags resultDisposition );
        ~AssertionHandler() {
            if ( !m_completed ) {
                m_resultCapture.handleIncomplete( m_assertionInfo );
            }
        }
 
 
        template<typename T>
        void handleExpr( ExprLhs<T> const& expr ) {
            handleExpr( expr.makeUnaryExpr() );
        }
        void handleExpr( ITransientExpression const& expr );
 
        void handleMessage(ResultWas::OfType resultType, StringRef const& message);
 
        void handleExceptionThrownAsExpected();
        void handleUnexpectedExceptionNotThrown();
        void handleExceptionNotThrownAsExpected();
        void handleThrowingCallSkipped();
        void handleUnexpectedInflightException();
 
        void complete();
        void setCompleted();
 
        // query
        auto allowThrows() const -> bool;
    };
 
    void handleExceptionMatchExpr( AssertionHandler& handler, std::string const& str, StringRef const& matcherString );
 
} // namespace Catch
 
#endif // TWOBLUECUBES_CATCH_ASSERTIONHANDLER_H_INCLUDED