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https://github.com/catchorg/Catch2.git
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1ca8f43b01
Also adds `Predicate` helper function to create `PredicateMatcher`.
Because of limitations in type inference it needs to be explicitly
typed, like so
`Predicate<std::string>([](std::string const& str) { ... })`.
It also takes an optional second argument for description of the
predicate.
It is possible to infer the argument with sufficient TMP, see
https://stackoverflow.com/questions/43560492/how-to-extract-lambdas-return-type-and-variadic-parameters-pack-back-from-gener/43561563#43561563
but I don't think that the magic is worth introducing ATM.
Closes #1236
87 lines
3.6 KiB
C++
87 lines
3.6 KiB
C++
/*
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* Created by Phil on 9/8/2017
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* Copyright 2017 Two Blue Cubes Ltd. All rights reserved.
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef TWOBLUECUBES_CATCH_CAPTURE_MATCHERS_HPP_INCLUDED
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#define TWOBLUECUBES_CATCH_CAPTURE_MATCHERS_HPP_INCLUDED
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#include "catch_capture.hpp"
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#include "catch_matchers.h"
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#include "catch_matchers_floating.h"
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#include "catch_matchers_generic.hpp"
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#include "catch_matchers_string.h"
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#include "catch_matchers_vector.h"
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namespace Catch {
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template<typename ArgT, typename MatcherT>
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class MatchExpr : public ITransientExpression {
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ArgT const& m_arg;
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MatcherT m_matcher;
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StringRef m_matcherString;
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public:
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MatchExpr( ArgT const& arg, MatcherT const& matcher, StringRef matcherString )
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: ITransientExpression{ true, matcher.match( arg ) },
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m_arg( arg ),
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m_matcher( matcher ),
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m_matcherString( matcherString )
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{}
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void streamReconstructedExpression( std::ostream &os ) const override {
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auto matcherAsString = m_matcher.toString();
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os << Catch::Detail::stringify( m_arg ) << ' ';
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if( matcherAsString == Detail::unprintableString )
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os << m_matcherString;
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else
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os << matcherAsString;
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}
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};
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using StringMatcher = Matchers::Impl::MatcherBase<std::string>;
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void handleExceptionMatchExpr( AssertionHandler& handler, StringMatcher const& matcher, StringRef matcherString );
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template<typename ArgT, typename MatcherT>
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auto makeMatchExpr( ArgT const& arg, MatcherT const& matcher, StringRef matcherString ) -> MatchExpr<ArgT, MatcherT> {
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return MatchExpr<ArgT, MatcherT>( arg, matcher, matcherString );
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}
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} // namespace Catch
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///////////////////////////////////////////////////////////////////////////////
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#define INTERNAL_CHECK_THAT( macroName, matcher, resultDisposition, arg ) \
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do { \
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Catch::AssertionHandler catchAssertionHandler( macroName, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(arg) ", " CATCH_INTERNAL_STRINGIFY(matcher), resultDisposition ); \
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INTERNAL_CATCH_TRY { \
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catchAssertionHandler.handleExpr( Catch::makeMatchExpr( arg, matcher, #matcher ) ); \
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} INTERNAL_CATCH_CATCH( catchAssertionHandler ) \
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INTERNAL_CATCH_REACT( catchAssertionHandler ) \
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} while( false )
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///////////////////////////////////////////////////////////////////////////////
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#define INTERNAL_CATCH_THROWS_MATCHES( macroName, exceptionType, resultDisposition, matcher, ... ) \
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do { \
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Catch::AssertionHandler catchAssertionHandler( macroName, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(__VA_ARGS__) ", " CATCH_INTERNAL_STRINGIFY(exceptionType) ", " CATCH_INTERNAL_STRINGIFY(matcher), resultDisposition ); \
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if( catchAssertionHandler.allowThrows() ) \
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try { \
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static_cast<void>(__VA_ARGS__ ); \
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catchAssertionHandler.handleUnexpectedExceptionNotThrown(); \
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} \
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catch( exceptionType const& ex ) { \
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catchAssertionHandler.handleExpr( Catch::makeMatchExpr( ex, matcher, #matcher ) ); \
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} \
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catch( ... ) { \
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catchAssertionHandler.handleUnexpectedInflightException(); \
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} \
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else \
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catchAssertionHandler.handleThrowingCallSkipped(); \
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INTERNAL_CATCH_REACT( catchAssertionHandler ) \
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} while( false )
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#endif // TWOBLUECUBES_CATCH_CAPTURE_MATCHERS_HPP_INCLUDED
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