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Stop accepting non-const comparison operators
A) non-const comparison operators should not exist and should not be encouraged B) The logic breaks comparing function pointers certain way C) It was inconsistent anyway, as it only applied to `==` and `!=` Closes #925
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@ -76,7 +76,7 @@ namespace Catch {
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// Specialised comparison functions to handle equality comparisons between ints and pointers (NULL deduces as an int)
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template<typename LhsT, typename RhsT>
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auto compareEqual( LhsT const& lhs, RhsT&& rhs ) -> bool { return const_cast<LhsT&>( lhs ) == rhs; };
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auto compareEqual( LhsT const& lhs, RhsT&& rhs ) -> bool { return lhs == rhs; };
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template<typename T>
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auto compareEqual( T* const& lhs, int rhs ) -> bool { return lhs == reinterpret_cast<void const*>( rhs ); };
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template<typename T>
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@ -87,7 +87,7 @@ namespace Catch {
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auto compareEqual( long lhs, T* const& rhs ) -> bool { return reinterpret_cast<void const*>( lhs ) == rhs; };
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template<typename LhsT, typename RhsT>
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auto compareNotEqual( LhsT const& lhs, RhsT&& rhs ) -> bool { return const_cast<LhsT&>( lhs ) != rhs; };
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auto compareNotEqual( LhsT const& lhs, RhsT&& rhs ) -> bool { return lhs != rhs; };
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template<typename T>
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auto compareNotEqual( T* const& lhs, int rhs ) -> bool { return lhs != reinterpret_cast<void const*>( rhs ); };
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template<typename T>
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@ -150,10 +150,6 @@ namespace Catch {
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}
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struct Decomposer {
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template<typename T>
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auto operator <= ( T& lhs ) -> ExprLhs<T&> {
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return ExprLhs<T&>( lhs );
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}
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template<typename T>
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auto operator <= ( T const& lhs ) -> ExprLhs<T const&> {
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return ExprLhs<T const&>( lhs );
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@ -156,6 +156,18 @@ with expansion:
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with message:
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dummy := 0
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-------------------------------------------------------------------------------
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#925: comparing function pointer to function address failed to compile
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-------------------------------------------------------------------------------
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TrickyTests.cpp:<line number>
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...............................................................................
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TrickyTests.cpp:<line number>:
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PASSED:
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REQUIRE( utility::synchronizing_callback != test.testMethod_uponComplete_arg )
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with expansion:
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1 != 0
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-------------------------------------------------------------------------------
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#961 -- Dynamically created sections should all be reported
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Looped section 0
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@ -1215,18 +1227,6 @@ ExceptionTests.cpp:<line number>: FAILED:
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due to unexpected exception with message:
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custom std exception
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-------------------------------------------------------------------------------
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Demonstrate that a non-const == is not used
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-------------------------------------------------------------------------------
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TrickyTests.cpp:<line number>
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...............................................................................
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TrickyTests.cpp:<line number>:
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PASSED:
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REQUIRE( t == 1u )
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with expansion:
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{?} == 1
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-------------------------------------------------------------------------------
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EndsWith string matcher
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-------------------------------------------------------------------------------
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@ -156,6 +156,18 @@ with expansion:
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with message:
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dummy := 0
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-------------------------------------------------------------------------------
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#925: comparing function pointer to function address failed to compile
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-------------------------------------------------------------------------------
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TrickyTests.cpp:<line number>
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...............................................................................
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TrickyTests.cpp:<line number>:
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PASSED:
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REQUIRE( utility::synchronizing_callback != test.testMethod_uponComplete_arg )
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with expansion:
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1 != 0
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-------------------------------------------------------------------------------
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#961 -- Dynamically created sections should all be reported
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Looped section 0
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@ -237,6 +249,6 @@ ConditionTests.cpp:<line number>: FAILED:
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CHECK_FALSE( true )
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===============================================================================
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test cases: 9 | 6 passed | 1 failed | 2 failed as expected
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assertions: 26 | 19 passed | 4 failed | 3 failed as expected
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test cases: 10 | 7 passed | 1 failed | 2 failed as expected
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assertions: 27 | 20 passed | 4 failed | 3 failed as expected
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@ -27,6 +27,7 @@ MiscTests.cpp:<line number>
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</failure>
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</testcase>
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<testcase classname="<exe-name>.global" name="#872" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#925: comparing function pointer to function address failed to compile" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#961 -- Dynamically created sections should all be reported/Looped section 0" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#961 -- Dynamically created sections should all be reported/Looped section 1" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="#961 -- Dynamically created sections should all be reported/Looped section 2" time="{duration}"/>
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@ -143,7 +144,6 @@ custom std exception
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ExceptionTests.cpp:<line number>
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</error>
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</testcase>
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<testcase classname="<exe-name>.global" name="Demonstrate that a non-const == is not used" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="EndsWith string matcher" time="{duration}">
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<failure message=""this string contains 'abc' as a substring" ends with: "this"" type="CHECK_THAT">
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MatchersTests.cpp:<line number>
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@ -169,6 +169,17 @@
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</Expression>
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<OverallResult success="true"/>
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</TestCase>
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<TestCase name="#925: comparing function pointer to function address failed to compile" filename="projects/<exe-name>/TrickyTests.cpp" >
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<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/TrickyTests.cpp" >
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<Original>
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utility::synchronizing_callback != test.testMethod_uponComplete_arg
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</Original>
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<Expanded>
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1 != 0
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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="#961 -- Dynamically created sections should all be reported" tags="[.]" filename="projects/<exe-name>/MiscTests.cpp" >
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<Section name="Looped section 0" filename="projects/<exe-name>/MiscTests.cpp" >
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<OverallResults successes="1" failures="0" expectedFailures="0"/>
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@ -1336,17 +1347,6 @@
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</Exception>
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<OverallResult success="false"/>
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</TestCase>
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<TestCase name="Demonstrate that a non-const == is not used" tags="[Tricky]" filename="projects/<exe-name>/TrickyTests.cpp" >
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<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/TrickyTests.cpp" >
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<Original>
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t == 1u
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</Original>
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<Expanded>
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{?} == 1
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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="EndsWith string matcher" tags="[.][failing][matchers]" filename="projects/<exe-name>/MatchersTests.cpp" >
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<Expression success="false" type="CHECK_THAT" filename="projects/<exe-name>/MatchersTests.cpp" >
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<Original>
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@ -183,32 +183,6 @@ namespace ObjectWithConversions
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}
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}
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namespace ObjectWithNonConstEqualityOperator
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{
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struct Test
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{
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Test( unsigned int v )
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: m_value(v)
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{}
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bool operator==( const Test&rhs )
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{
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return (m_value == rhs.m_value);
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}
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bool operator==( const Test&rhs ) const
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{
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return (m_value != rhs.m_value);
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}
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unsigned int m_value;
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};
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TEST_CASE("Demonstrate that a non-const == is not used", "[Tricky]" )
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{
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Test t( 1 );
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REQUIRE( t == 1u );
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}
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}
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namespace EnumBitFieldTests
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{
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enum Bits : uint32_t {
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@ -448,3 +422,19 @@ TEST_CASE( "non-copyable objects", "[.][failing]" ) {
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std::type_info const& ti = typeid(int);
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CHECK( ti == typeid(int) );
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}
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// #925
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using signal_t = void (*) (void*);
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struct TestClass {
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signal_t testMethod_uponComplete_arg = nullptr;
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};
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namespace utility {
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inline static void synchronizing_callback( void * ) { }
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}
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TEST_CASE("#925: comparing function pointer to function address failed to compile") {
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TestClass test;
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REQUIRE(utility::synchronizing_callback != test.testMethod_uponComplete_arg);
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}
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