mirror of
https://github.com/catchorg/Catch2.git
synced 2024-11-07 06:39:55 +01:00
Add stringification support to std::exception and deriving classes
This support is based on overriden `std::exception::what` method, so if an exception does not do so meaningfully, the message is still pointless. This is only used as a fallback, both `StringMaker` specialization and `operator<<` overload have priority..
This commit is contained in:
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@ -62,7 +62,9 @@ namespace Catch {
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std::string convertUnknownEnumToString( E e );
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std::string convertUnknownEnumToString( E e );
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template<typename T>
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template<typename T>
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typename std::enable_if<!std::is_enum<T>::value, std::string>::type convertUnstreamable( T const& value ) {
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typename std::enable_if<
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!std::is_enum<T>::value && !std::is_base_of<std::exception, T>::value,
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std::string>::type convertUnstreamable( T const& value ) {
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#if !defined(CATCH_CONFIG_FALLBACK_STRINGIFIER)
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#if !defined(CATCH_CONFIG_FALLBACK_STRINGIFIER)
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(void)value;
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(void)value;
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return Detail::unprintableString;
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return Detail::unprintableString;
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@ -71,11 +73,20 @@ namespace Catch {
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#endif
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#endif
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}
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}
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template<typename T>
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template<typename T>
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typename std::enable_if<std::is_enum<T>::value, std::string>::type convertUnstreamable( T const& value ) {
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typename std::enable_if<
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return convertUnknownEnumToString( value );
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!std::is_enum<T>::value && std::is_base_of<std::exception, T>::value,
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std::string>::type convertUnstreamable(T const& ex) {
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return ex.what();
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}
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}
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template<typename T>
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typename std::enable_if<
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std::is_enum<T>::value
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, std::string>::type convertUnstreamable( T const& value ) {
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return convertUnknownEnumToString( value );
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}
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#if defined(_MANAGED)
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#if defined(_MANAGED)
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//! Convert a CLR string to a utf8 std::string
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//! Convert a CLR string to a utf8 std::string
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template<typename T>
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template<typename T>
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@ -211,14 +211,21 @@ Matchers.tests.cpp:<line number>: passed: testStringForMatching(), Equals("this
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Matchers.tests.cpp:<line number>: passed: testStringForMatching(), Equals("this string contains 'ABC' as a substring", Catch::CaseSensitive::No) for: "this string contains 'abc' as a substring" equals: "this string contains 'abc' as a substring" (case insensitive)
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Matchers.tests.cpp:<line number>: passed: testStringForMatching(), Equals("this string contains 'ABC' as a substring", Catch::CaseSensitive::No) for: "this string contains 'abc' as a substring" equals: "this string contains 'abc' as a substring" (case insensitive)
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Matchers.tests.cpp:<line number>: failed: testStringForMatching(), Equals("this string contains 'ABC' as a substring") for: "this string contains 'abc' as a substring" equals: "this string contains 'ABC' as a substring"
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Matchers.tests.cpp:<line number>: failed: testStringForMatching(), Equals("this string contains 'ABC' as a substring") for: "this string contains 'abc' as a substring" equals: "this string contains 'ABC' as a substring"
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Matchers.tests.cpp:<line number>: failed: testStringForMatching(), Equals("something else", Catch::CaseSensitive::No) for: "this string contains 'abc' as a substring" equals: "something else" (case insensitive)
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Matchers.tests.cpp:<line number>: failed: testStringForMatching(), Equals("something else", Catch::CaseSensitive::No) for: "this string contains 'abc' as a substring" equals: "something else" (case insensitive)
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ToStringGeneral.tests.cpp:<line number>: passed: ::Catch::Detail::stringify(WhatException{}) == "This exception has overriden what() method" for: "This exception has overriden what() method"
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==
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"This exception has overriden what() method"
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ToStringGeneral.tests.cpp:<line number>: passed: ::Catch::Detail::stringify(OperatorException{}) == "OperatorException" for: "OperatorException" == "OperatorException"
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ToStringGeneral.tests.cpp:<line number>: passed: ::Catch::Detail::stringify(StringMakerException{}) == "StringMakerException" for: "StringMakerException"
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==
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"StringMakerException"
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Matchers.tests.cpp:<line number>: failed: expected exception, got none; expression was: doesNotThrow(), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: expected exception, got none; expression was: doesNotThrow(), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: expected exception, got none; expression was: doesNotThrow(), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: expected exception, got none; expression was: doesNotThrow(), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: unexpected exception with message: 'Unknown exception'; expression was: throwsAsInt(1), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: unexpected exception with message: 'Unknown exception'; expression was: throwsAsInt(1), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: unexpected exception with message: 'Unknown exception'; expression was: throwsAsInt(1), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: unexpected exception with message: 'Unknown exception'; expression was: throwsAsInt(1), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: throws(3), SpecialException, ExceptionMatcher{1} for: {?} special exception has value of 1
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Matchers.tests.cpp:<line number>: failed: throws(3), SpecialException, ExceptionMatcher{1} for: std::exception special exception has value of 1
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Matchers.tests.cpp:<line number>: failed: throws(4), SpecialException, ExceptionMatcher{1} for: {?} special exception has value of 1
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Matchers.tests.cpp:<line number>: failed: throws(4), SpecialException, ExceptionMatcher{1} for: std::exception special exception has value of 1
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Matchers.tests.cpp:<line number>: passed: throws(1), SpecialException, ExceptionMatcher{1} for: {?} special exception has value of 1
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Matchers.tests.cpp:<line number>: passed: throws(1), SpecialException, ExceptionMatcher{1} for: std::exception special exception has value of 1
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Matchers.tests.cpp:<line number>: passed: throws(2), SpecialException, ExceptionMatcher{2} for: {?} special exception has value of 2
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Matchers.tests.cpp:<line number>: passed: throws(2), SpecialException, ExceptionMatcher{2} for: std::exception special exception has value of 2
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Exception.tests.cpp:<line number>: passed: thisThrows(), "expected exception" for: "expected exception" equals: "expected exception"
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Exception.tests.cpp:<line number>: passed: thisThrows(), "expected exception" for: "expected exception" equals: "expected exception"
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Exception.tests.cpp:<line number>: passed: thisThrows(), Equals( "expecteD Exception", Catch::CaseSensitive::No ) for: "expected exception" equals: "expected exception" (case insensitive)
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Exception.tests.cpp:<line number>: passed: thisThrows(), Equals( "expecteD Exception", Catch::CaseSensitive::No ) for: "expected exception" equals: "expected exception" (case insensitive)
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Exception.tests.cpp:<line number>: passed: thisThrows(), StartsWith( "expected" ) for: "expected exception" starts with: "expected"
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Exception.tests.cpp:<line number>: passed: thisThrows(), StartsWith( "expected" ) for: "expected exception" starts with: "expected"
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@ -335,12 +335,12 @@ Matchers.tests.cpp:<line number>
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Matchers.tests.cpp:<line number>: FAILED:
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Matchers.tests.cpp:<line number>: FAILED:
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CHECK_THROWS_MATCHES( throws(3), SpecialException, ExceptionMatcher{1} )
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CHECK_THROWS_MATCHES( throws(3), SpecialException, ExceptionMatcher{1} )
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with expansion:
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with expansion:
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{?} special exception has value of 1
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std::exception special exception has value of 1
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Matchers.tests.cpp:<line number>: FAILED:
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Matchers.tests.cpp:<line number>: FAILED:
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REQUIRE_THROWS_MATCHES( throws(4), SpecialException, ExceptionMatcher{1} )
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REQUIRE_THROWS_MATCHES( throws(4), SpecialException, ExceptionMatcher{1} )
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with expansion:
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with expansion:
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{?} special exception has value of 1
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std::exception special exception has value of 1
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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Expected exceptions that don't throw or unexpected exceptions fail the test
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Expected exceptions that don't throw or unexpected exceptions fail the test
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@ -1084,6 +1084,6 @@ due to unexpected exception with message:
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Why would you throw a std::string?
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Why would you throw a std::string?
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===============================================================================
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===============================================================================
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test cases: 206 | 153 passed | 49 failed | 4 failed as expected
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test cases: 207 | 154 passed | 49 failed | 4 failed as expected
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assertions: 1061 | 933 passed | 107 failed | 21 failed as expected
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assertions: 1064 | 936 passed | 107 failed | 21 failed as expected
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@ -1680,6 +1680,34 @@ with expansion:
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"this string contains 'abc' as a substring" equals: "something else" (case
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"this string contains 'abc' as a substring" equals: "something else" (case
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insensitive)
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insensitive)
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-------------------------------------------------------------------------------
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Exception as a value (e.g. in REQUIRE_THROWS_MATCHES) can be stringified
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-------------------------------------------------------------------------------
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ToStringGeneral.tests.cpp:<line number>
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...............................................................................
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ToStringGeneral.tests.cpp:<line number>:
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PASSED:
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REQUIRE( ::Catch::Detail::stringify(WhatException{}) == "This exception has overriden what() method" )
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with expansion:
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"This exception has overriden what() method"
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==
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"This exception has overriden what() method"
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ToStringGeneral.tests.cpp:<line number>:
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PASSED:
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REQUIRE( ::Catch::Detail::stringify(OperatorException{}) == "OperatorException" )
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with expansion:
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"OperatorException" == "OperatorException"
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ToStringGeneral.tests.cpp:<line number>:
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PASSED:
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REQUIRE( ::Catch::Detail::stringify(StringMakerException{}) == "StringMakerException" )
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with expansion:
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"StringMakerException"
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==
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"StringMakerException"
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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Exception matchers that fail
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Exception matchers that fail
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No exception
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No exception
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@ -1722,12 +1750,12 @@ Matchers.tests.cpp:<line number>
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Matchers.tests.cpp:<line number>: FAILED:
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Matchers.tests.cpp:<line number>: FAILED:
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CHECK_THROWS_MATCHES( throws(3), SpecialException, ExceptionMatcher{1} )
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CHECK_THROWS_MATCHES( throws(3), SpecialException, ExceptionMatcher{1} )
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with expansion:
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with expansion:
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{?} special exception has value of 1
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std::exception special exception has value of 1
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Matchers.tests.cpp:<line number>: FAILED:
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Matchers.tests.cpp:<line number>: FAILED:
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REQUIRE_THROWS_MATCHES( throws(4), SpecialException, ExceptionMatcher{1} )
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REQUIRE_THROWS_MATCHES( throws(4), SpecialException, ExceptionMatcher{1} )
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with expansion:
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with expansion:
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{?} special exception has value of 1
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std::exception special exception has value of 1
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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Exception matchers that succeed
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Exception matchers that succeed
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@ -1739,13 +1767,13 @@ Matchers.tests.cpp:<line number>:
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PASSED:
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PASSED:
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CHECK_THROWS_MATCHES( throws(1), SpecialException, ExceptionMatcher{1} )
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CHECK_THROWS_MATCHES( throws(1), SpecialException, ExceptionMatcher{1} )
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with expansion:
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with expansion:
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{?} special exception has value of 1
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std::exception special exception has value of 1
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Matchers.tests.cpp:<line number>:
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Matchers.tests.cpp:<line number>:
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PASSED:
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PASSED:
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REQUIRE_THROWS_MATCHES( throws(2), SpecialException, ExceptionMatcher{2} )
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REQUIRE_THROWS_MATCHES( throws(2), SpecialException, ExceptionMatcher{2} )
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with expansion:
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with expansion:
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{?} special exception has value of 2
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std::exception special exception has value of 2
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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Exception messages can be tested for
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Exception messages can be tested for
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PASSED:
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PASSED:
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===============================================================================
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===============================================================================
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test cases: 206 | 140 passed | 62 failed | 4 failed as expected
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test cases: 207 | 141 passed | 62 failed | 4 failed as expected
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assertions: 1075 | 933 passed | 121 failed | 21 failed as expected
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assertions: 1078 | 936 passed | 121 failed | 21 failed as expected
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@ -1,7 +1,7 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<?xml version="1.0" encoding="UTF-8"?>
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<testsuitesloose text artifact
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<testsuitesloose text artifact
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>
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>
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<testsuite name="<exe-name>" errors="17" failures="105" tests="1076" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
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<testsuite name="<exe-name>" errors="17" failures="105" tests="1079" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
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<testcase classname="<exe-name>.global" name="# A test name that starts with a #" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="# A test name that starts with a #" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#1005: Comparing pointer to int and long (NULL can be either on various systems)" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#1005: Comparing pointer to int and long (NULL can be either on various systems)" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#1027" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#1027" time="{duration}"/>
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@ -218,6 +218,7 @@ Matchers.tests.cpp:<line number>
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Matchers.tests.cpp:<line number>
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Matchers.tests.cpp:<line number>
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</failure>
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</failure>
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</testcase>
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</testcase>
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<testcase classname="<exe-name>.global" name="Exception as a value (e.g. in REQUIRE_THROWS_MATCHES) can be stringified" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="Exception matchers that fail/No exception" time="{duration}">
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<testcase classname="<exe-name>.global" name="Exception matchers that fail/No exception" time="{duration}">
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<failure message="doesNotThrow(), SpecialException, ExceptionMatcher{1}" type="CHECK_THROWS_MATCHES">
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<failure message="doesNotThrow(), SpecialException, ExceptionMatcher{1}" type="CHECK_THROWS_MATCHES">
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Matchers.tests.cpp:<line number>
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Matchers.tests.cpp:<line number>
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@ -237,10 +238,10 @@ Matchers.tests.cpp:<line number>
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</error>
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</error>
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</testcase>
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</testcase>
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<testcase classname="<exe-name>.global" name="Exception matchers that fail/Contents are wrong" time="{duration}">
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<testcase classname="<exe-name>.global" name="Exception matchers that fail/Contents are wrong" time="{duration}">
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<failure message="{?} special exception has value of 1" type="CHECK_THROWS_MATCHES">
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<failure message="std::exception special exception has value of 1" type="CHECK_THROWS_MATCHES">
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Matchers.tests.cpp:<line number>
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Matchers.tests.cpp:<line number>
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</failure>
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</failure>
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<failure message="{?} special exception has value of 1" type="REQUIRE_THROWS_MATCHES">
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<failure message="std::exception special exception has value of 1" type="REQUIRE_THROWS_MATCHES">
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Matchers.tests.cpp:<line number>
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Matchers.tests.cpp:<line number>
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</failure>
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</failure>
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</testcase>
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</testcase>
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</Expression>
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</Expression>
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<OverallResult success="false"/>
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<OverallResult success="false"/>
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</TestCase>
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</TestCase>
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<TestCase name="Exception as a value (e.g. in REQUIRE_THROWS_MATCHES) can be stringified" tags="[exception][toString]" filename="projects/<exe-name>/UsageTests/ToStringGeneral.tests.cpp" >
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<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/ToStringGeneral.tests.cpp" >
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<Original>
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::Catch::Detail::stringify(WhatException{}) == "This exception has overriden what() method"
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</Original>
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<Expanded>
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"This exception has overriden what() method"
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==
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"This exception has overriden what() method"
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</Expanded>
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</Expression>
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<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/ToStringGeneral.tests.cpp" >
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<Original>
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::Catch::Detail::stringify(OperatorException{}) == "OperatorException"
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</Original>
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<Expanded>
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"OperatorException" == "OperatorException"
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</Expanded>
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</Expression>
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<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/ToStringGeneral.tests.cpp" >
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<Original>
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::Catch::Detail::stringify(StringMakerException{}) == "StringMakerException"
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</Original>
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<Expanded>
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"StringMakerException"
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==
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"StringMakerException"
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</Expanded>
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</Expression>
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<OverallResult success="true"/>
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</TestCase>
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<TestCase name="Exception matchers that fail" tags="[!throws][.][.failing][exceptions][matchers]" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<TestCase name="Exception matchers that fail" tags="[!throws][.][.failing][exceptions][matchers]" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Section name="No exception" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Section name="No exception" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Expression success="false" type="CHECK_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Expression success="false" type="CHECK_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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@ -1952,7 +1983,7 @@
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throws(3), SpecialException, ExceptionMatcher{1}
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throws(3), SpecialException, ExceptionMatcher{1}
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</Original>
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</Original>
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<Expanded>
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<Expanded>
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{?} special exception has value of 1
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std::exception special exception has value of 1
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</Expanded>
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</Expanded>
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</Expression>
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</Expression>
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<Expression success="false" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Expression success="false" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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@ -1960,7 +1991,7 @@
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throws(4), SpecialException, ExceptionMatcher{1}
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throws(4), SpecialException, ExceptionMatcher{1}
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</Original>
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</Original>
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<Expanded>
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<Expanded>
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{?} special exception has value of 1
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std::exception special exception has value of 1
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</Expanded>
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</Expanded>
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</Expression>
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</Expression>
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<OverallResults successes="0" failures="2" expectedFailures="0"/>
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<OverallResults successes="0" failures="2" expectedFailures="0"/>
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@ -1973,7 +2004,7 @@
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throws(1), SpecialException, ExceptionMatcher{1}
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throws(1), SpecialException, ExceptionMatcher{1}
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</Original>
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</Original>
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<Expanded>
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<Expanded>
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{?} special exception has value of 1
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std::exception special exception has value of 1
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</Expanded>
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</Expanded>
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</Expression>
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</Expression>
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<Expression success="true" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Expression success="true" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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@ -1981,7 +2012,7 @@
|
|||||||
throws(2), SpecialException, ExceptionMatcher{2}
|
throws(2), SpecialException, ExceptionMatcher{2}
|
||||||
</Original>
|
</Original>
|
||||||
<Expanded>
|
<Expanded>
|
||||||
{?} special exception has value of 2
|
std::exception special exception has value of 2
|
||||||
</Expanded>
|
</Expanded>
|
||||||
</Expression>
|
</Expression>
|
||||||
<OverallResult success="true"/>
|
<OverallResult success="true"/>
|
||||||
@ -9892,7 +9923,7 @@ loose text artifact
|
|||||||
</Section>
|
</Section>
|
||||||
<OverallResult success="true"/>
|
<OverallResult success="true"/>
|
||||||
</TestCase>
|
</TestCase>
|
||||||
<OverallResults successes="933" failures="122" expectedFailures="21"/>
|
<OverallResults successes="936" failures="122" expectedFailures="21"/>
|
||||||
</Group>
|
</Group>
|
||||||
<OverallResults successes="933" failures="121" expectedFailures="21"/>
|
<OverallResults successes="936" failures="121" expectedFailures="21"/>
|
||||||
</Catch>
|
</Catch>
|
||||||
|
@ -115,3 +115,46 @@ TEST_CASE("Static arrays are convertible to string", "[toString]") {
|
|||||||
REQUIRE(Catch::Detail::stringify(arr) == R"({ { "1:1", "1:2", "1:3" }, { "2:1", "2:2" } })");
|
REQUIRE(Catch::Detail::stringify(arr) == R"({ { "1:1", "1:2", "1:3" }, { "2:1", "2:2" } })");
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
struct WhatException : std::exception {
|
||||||
|
char const* what() const noexcept override {
|
||||||
|
return "This exception has overriden what() method";
|
||||||
|
}
|
||||||
|
~WhatException() override;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct OperatorException : std::exception {
|
||||||
|
~OperatorException() override;
|
||||||
|
};
|
||||||
|
|
||||||
|
std::ostream& operator<<(std::ostream& out, OperatorException const&) {
|
||||||
|
out << "OperatorException";
|
||||||
|
return out;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct StringMakerException : std::exception {
|
||||||
|
~StringMakerException() override;
|
||||||
|
};
|
||||||
|
|
||||||
|
namespace Catch {
|
||||||
|
template <>
|
||||||
|
struct StringMaker<StringMakerException> {
|
||||||
|
static std::string convert(StringMakerException const&) {
|
||||||
|
return "StringMakerException";
|
||||||
|
}
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
// Avoid -Wweak-tables
|
||||||
|
WhatException::~WhatException() = default;
|
||||||
|
OperatorException::~OperatorException() = default;
|
||||||
|
StringMakerException::~StringMakerException() = default;
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
TEST_CASE("Exception as a value (e.g. in REQUIRE_THROWS_MATCHES) can be stringified", "[toString][exception]") {
|
||||||
|
REQUIRE(::Catch::Detail::stringify(WhatException{}) == "This exception has overriden what() method");
|
||||||
|
REQUIRE(::Catch::Detail::stringify(OperatorException{}) == "OperatorException");
|
||||||
|
REQUIRE(::Catch::Detail::stringify(StringMakerException{}) == "StringMakerException");
|
||||||
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user