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turtle/src/tests/turtle_test/function_test.cpp
mat007 fb4df4527b Refactoring 
git-svn-id: https://svn.code.sf.net/p/turtle/code/trunk@131 860be788-9bd5-4423-9f1e-828f051e677b
2010-03-01 23:06:08 +00:00

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//
// Copyright Mathieu Champlon 2008
//
// 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)
//
#include "mock_error.hpp"
#define BOOST_AUTO_TEST_MAIN
#include <boost/test/auto_unit_test.hpp>
#define BOOST_LIB_NAME boost_unit_test_framework
#include <boost/config/auto_link.hpp>
#define MOCK_ERROR_POLICY mock_error
#include <turtle/mock.hpp>
#define CHECK_ERROR( expr, error ) \
BOOST_CHECK( verify() ); \
expr; \
BOOST_CHECK_EQUAL( 1, error##_count ); \
reset();
namespace
{
struct error_fixture
{
error_fixture()
{
reset();
}
~error_fixture()
{
BOOST_CHECK( verify() );
}
void reset()
{
missing_action_count = 0;
no_match_count = 0;
sequence_failed_count = 0;
verification_failed_count = 0;
untriggered_expectation_count = 0;
}
bool verify() const
{
return missing_action_count == 0 &&
no_match_count == 0 &&
sequence_failed_count == 0 &&
verification_failed_count == 0 &&
untriggered_expectation_count == 0;
}
};
}
// functor
BOOST_FIXTURE_TEST_CASE( an_expectation_can_be_passed_as_functor, error_fixture )
{
mock::function< void() > e;
boost::function< void() > f = e;
}
BOOST_FIXTURE_TEST_CASE( an_expectation_can_be_passed_as_functor_using_boost_bind_and_boost_ref, error_fixture )
{
mock::function< void() > e;
boost::function< void() > f = boost::bind( boost::ref( e ) );
}
// invocations
BOOST_FIXTURE_TEST_CASE( triggering_an_empty_expectation_calls_no_match_error, error_fixture )
{
{
mock::function< void() > e;
CHECK_ERROR( e(), no_match );
}
{
mock::function< int( int, const std::string& ) > e;
CHECK_ERROR( e( 1, "s" ), no_match );
}
}
BOOST_FIXTURE_TEST_CASE( triggering_a_never_expectation_calls_no_match_error, error_fixture )
{
{
mock::function< void() > e;
e.expect().never();
CHECK_ERROR( e(), no_match );
}
{
mock::function< int( int, const std::string& ) > e;
e.expect().never();
CHECK_ERROR( e( 1, "s" ), no_match );
}
}
BOOST_FIXTURE_TEST_CASE( triggering_an_unlimited_expectation_is_valid, error_fixture )
{
{
mock::function< void() > e;
e.expect();
e();
e();
}
{
mock::function< void( int, const std::string& ) > e;
e.expect();
e( 1, "s" );
e( 1, "s" );
}
}
BOOST_FIXTURE_TEST_CASE( triggering_a_once_expectation_calls_no_match_error_after_one_call, error_fixture )
{
{
mock::function< void() > e;
e.expect().once();
e();
CHECK_ERROR( e(), no_match );
}
{
mock::function< void( int, const std::string& ) > e;
e.expect().once();
e( 1, "s" );
CHECK_ERROR( e( 1, "s" ), no_match );
}
}
BOOST_FIXTURE_TEST_CASE( literal_zero_can_be_used_in_expectation_operator_call_as_pointers, error_fixture )
{
mock::function< void( int* ) > e;
e.expect().once();
e( 0 );
}
// verify
BOOST_FIXTURE_TEST_CASE( verifying_an_empty_expectation_succeeds, error_fixture )
{
{
mock::function< void() > e;
BOOST_CHECK( e.verify() );
}
{
mock::function< int( int, const std::string& ) > e;
BOOST_CHECK( e.verify() );
}
}
BOOST_FIXTURE_TEST_CASE( verifying_an_unlimited_expectation_succeeds, error_fixture )
{
{
mock::function< void() > e;
e.expect();
BOOST_CHECK( e.verify() );
}
{
mock::function< int( int, const std::string& ) > e;
e.expect();
BOOST_CHECK( e.verify() );
}
}
BOOST_FIXTURE_TEST_CASE( verifying_a_once_expectation_after_one_call_succeeds, error_fixture )
{
{
mock::function< void() > e;
e.expect().once();
e();
BOOST_CHECK( e.verify() );
}
{
mock::function< void( int, const std::string& ) > e;
e.expect().once();
e( 1, "s" );
BOOST_CHECK( e.verify() );
}
}
BOOST_FIXTURE_TEST_CASE( verifying_a_once_expectation_before_the_call_fails, error_fixture )
{
{
mock::function< void() > e;
e.expect().once();
CHECK_ERROR( BOOST_CHECK( ! e.verify() ), verification_failed );
}
{
mock::function< int( int, const std::string& ) > e;
e.expect().once();
CHECK_ERROR( BOOST_CHECK( ! e.verify() ), verification_failed );
}
}
// reset
BOOST_FIXTURE_TEST_CASE( triggering_a_reset_expectation_calls_no_match_error, error_fixture )
{
{
mock::function< void() > e;
e.expect();
e.reset();
CHECK_ERROR( e(), no_match );
}
{
mock::function< int( int, const std::string& ) > e;
e.expect();
e.reset();
CHECK_ERROR( e( 1, "s" ), no_match );
}
}
BOOST_FIXTURE_TEST_CASE( verifying_a_reset_expectation_succeeds, error_fixture )
{
{
mock::function< void() > e;
e.expect();
e.reset();
BOOST_CHECK( e.verify() );
}
{
mock::function< int( int, const std::string& ) > e;
e.expect();
e.reset();
BOOST_CHECK( e.verify() );
}
}
// constraints
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_with_wrong_parameter_value_in_equal_constraint_calls_no_match_error, error_fixture )
{
{
mock::function< void( int ) > e;
e.expect().with( 42 );
CHECK_ERROR( e( 43 ), no_match );
}
{
mock::function< int( int, const std::string& ) > e;
e.expect().with( 42, "expected" );
CHECK_ERROR( e( 42, "actual" ), no_match );
}
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_with_wrong_parameter_value_in_equal_or_less_constraint_calls_no_match_error, error_fixture )
{
mock::function< void( int ) > e;
e.expect().with( mock::equal( 42 ) || mock::less( 42 ) );
e( 41 );
e( 42 );
CHECK_ERROR( e( 43 ), no_match );
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_with_wrong_parameter_value_in_equal_and_not_less_constraint_calls_no_match_error, error_fixture )
{
mock::function< void( int ) > e;
e.expect().with( mock::equal( 42 ) && ! mock::less( 41 ) );
e( 42 );
CHECK_ERROR( e( 43 ), no_match );
}
namespace
{
class my_interface : boost::noncopyable
{
public:
virtual ~my_interface() {}
private:
virtual void my_method() = 0;
};
class my_implementation : public my_interface
{
virtual void my_method() {}
};
}
BOOST_FIXTURE_TEST_CASE( passing_call_values_by_reference_is_transparent, error_fixture )
{
{
mock::function< void( my_interface& ) > e;
my_implementation imp;
e.expect().with( mock::same( imp ) );
e( imp );
}
{
mock::function< void( const my_interface& ) > e;
my_implementation imp;
e.expect().with( mock::same( imp ) );
e( imp );
}
}
namespace
{
bool custom_constraint( int )
{
return false;
}
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_with_failing_custom_constraint_calls_no_match_error, error_fixture )
{
{
mock::function< void( int ) > e;
e.expect().with( &custom_constraint );
CHECK_ERROR( e( 42 ), no_match );
}
{
mock::function< int( int, const std::string& ) > e;
e.expect().with( &custom_constraint, "actual" );
CHECK_ERROR( e( 42, "actual" ), no_match );
}
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_with_wrong_parameter_value_in_custom_constraint_calls_no_match_error, error_fixture )
{
mock::function< void( int ) > e;
e.expect().with( mock::constraint( &custom_constraint, "custom constraint" ) );
CHECK_ERROR( e( 42 ), no_match );
}
/*
BOOST_FIXTURE_TEST_CASE( literal_zero_can_be_used_in_place_of_null_pointers_in_constraints, error_fixture )
{
mock::function< void( int* ) > e;
e.expect().with( 0 );
e.reset();
}
*/
// result handling
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_with_no_return_set_calls_missing_action, error_fixture )
{
{
mock::function< int() > e;
e.expect();
CHECK_ERROR( e(), missing_action );
}
{
mock::function< int&() > e;
e.expect();
CHECK_ERROR( e(), missing_action );
}
{
mock::function< const std::string&() > e;
e.expect();
CHECK_ERROR( e(), missing_action );
}
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_returns_the_set_value, error_fixture )
{
{
mock::function< int() > e;
e.expect().returns( 42 );
BOOST_CHECK_EQUAL( 42, e() );
}
{
mock::function< int() > e;
const int i = 42;
e.expect().returns( i );
BOOST_CHECK_EQUAL( i, e() );
}
{
mock::function< int() > e;
int i = 42;
e.expect().returns( boost::ref( i ) );
i = 43;
BOOST_CHECK_EQUAL( 43, e() );
}
{
mock::function< int&() > e;
e.expect().returns( 42 );
BOOST_CHECK_EQUAL( 42, e() );
}
{
mock::function< int&() > e;
const int result = 42;
e.expect().returns( result );
BOOST_CHECK_EQUAL( result, e() );
}
{
mock::function< int&() > e;
int i = 42;
e.expect().returns( i );
i = 43;
BOOST_CHECK_EQUAL( 42, e() );
}
{
mock::function< int&() > e;
int i = 42;
e.expect().returns( boost::ref( i ) );
i = 43;
BOOST_CHECK_EQUAL( 43, e() );
BOOST_CHECK_EQUAL( 12, e() = 12 );
BOOST_CHECK_EQUAL( 12, i );
}
{
mock::function< std::string() > e;
e.expect().returns( "result" );
BOOST_CHECK_EQUAL( "result", e() );
}
{
mock::function< const std::string&() > e;
e.expect().returns( "result" );
BOOST_CHECK_EQUAL( "result", e() );
}
{
mock::function< int*() > e;
e.expect().returns( 0 );
BOOST_CHECK( ! e() );
}
{
mock::function< int() > e;
e.expect().returns( 0 );
BOOST_CHECK_EQUAL( 0, e() );
}
{
mock::function< int&() > e;
e.expect().returns( 0 );
BOOST_CHECK_EQUAL( 0, e() );
}
}
namespace
{
struct A {};
struct B : A {};
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_returns_the_set_auto_ptr_value, error_fixture )
{
{
mock::function< std::auto_ptr< int >() > e;
std::auto_ptr< int > ptr( new int( 3 ) );
e.expect().returns( boost::ref( ptr ) );
BOOST_CHECK_EQUAL( 3, *ptr );
BOOST_CHECK_EQUAL( 3, *e() );
BOOST_CHECK( ! ptr.get() );
BOOST_CHECK( ! e().get() );
}
{
mock::function< std::auto_ptr< int >() > e;
std::auto_ptr< int > ptr( new int( 3 ) );
e.expect().returns( ptr );
BOOST_CHECK( ! ptr.get() );
BOOST_CHECK_EQUAL( 3, *e() );
BOOST_CHECK( ! e().get() );
}
{
mock::function< std::auto_ptr< int >() > e;
e.expect().returns( new int( 3 ) );
BOOST_CHECK_EQUAL( 3, *e() );
BOOST_CHECK( ! e().get() );
}
{
mock::function< std::auto_ptr< int >() > e;
e.expect().returns( std::auto_ptr< int >( new int( 3 ) ) );
BOOST_CHECK_EQUAL( 3, *e() );
BOOST_CHECK( ! e().get() );
}
{
mock::function< std::auto_ptr< A >() > e;
e.expect().returns( new B );
BOOST_CHECK_NO_THROW( e() );
}
{
mock::function< std::auto_ptr< A >() > e;
e.expect().returns( std::auto_ptr< A >( new B ) );
BOOST_CHECK_NO_THROW( e() );
}
{
mock::function< std::auto_ptr< A >() > e;
e.expect().returns( std::auto_ptr< B >( new B ) );
BOOST_CHECK_NO_THROW( e() );
}
}
namespace
{
int custom_result()
{
return 42;
}
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_calls_the_custom_functor, error_fixture )
{
mock::function< int() > e;
e.expect().calls( &custom_result );
BOOST_CHECK_EQUAL( 42, e() );
}
namespace
{
int custom_result_with_parameter( int i )
{
return i;
}
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_calls_the_custom_functor_with_parameters, error_fixture )
{
mock::function< int( int ) > e;
e.expect().calls( &custom_result_with_parameter );
BOOST_CHECK_EQUAL( 42, e( 42 ) );
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_calls_the_custom_functor_without_parameters_thanks_to_boost_bind, error_fixture )
{
mock::function< int( int ) > e;
e.expect().calls( boost::bind( &custom_result ) );
BOOST_CHECK_EQUAL( 42, e( 17 ) );
}
BOOST_FIXTURE_TEST_CASE( triggering_an_expectation_throws_the_set_exception, error_fixture )
{
mock::function< void() > e;
e.expect().throws( std::runtime_error( "some exception" ) );
try
{
e();
}
catch( std::runtime_error& e )
{
BOOST_CHECK_EQUAL( "some exception", e.what() );
return;
}
BOOST_FAIL( "should have thrown" );
}
// multiple matchers
BOOST_FIXTURE_TEST_CASE( expecting_twice_a_single_expectation_makes_it_callable_twice, error_fixture )
{
{
mock::function< void() > e;
e.expect().once();
e.expect().once();
e();
e();
CHECK_ERROR( e(), no_match );
}
{
mock::function< void( const std::string& ) > e;
e.expect().once().with( "first" );
e.expect().once().with( "second" );
e( "first" );
e( "second" );
CHECK_ERROR( e( "third"), no_match );
}
}
BOOST_FIXTURE_TEST_CASE( best_matcher_is_selected_first, error_fixture )
{
{
mock::function< void( int ) > e;
e.expect().once().with( 1 );
e.expect().once().with( 2 );
e( 2 );
e( 1 );
CHECK_ERROR( e( 3 ), no_match );
}
{
mock::function< void( const std::string& ) > e;
e.expect().once().with( "first" );
e.expect().once().with( "second" );
e( "second" );
e( "first" );
CHECK_ERROR( e( "third"), no_match );
}
}
// error report
namespace
{
template< typename T >
std::string to_string( const T& t )
{
std::stringstream s;
s << t;
return s.str();
}
}
BOOST_FIXTURE_TEST_CASE( expectation_can_be_serialized_to_be_human_readable, error_fixture )
{
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().once().with( 1 );
e.expect().once().with( 2 );
BOOST_CHECK_NO_THROW( e( 2 ) );
const std::string expected = "my function\n"
". once().with( 1 )\n"
"v once().with( 2 )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().never().with( 1 );
const std::string expected = "my function\n"
"v never().with( 1 )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
{
mock::function< void( const std::string& ) > e;
e.expect().never().with( mock::less( "first" ) );
e.expect().exactly( 2 ).with( "second" );
BOOST_CHECK_NO_THROW( e( "second" ) );
{
const std::string expected = "?\n"
"v never().with( less( \"first\" ) )\n"
". exactly( 1/2 ).with( \"second\" )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
}
BOOST_CHECK_NO_THROW( e( "second" ) );
{
const std::string expected = "?\n"
"v never().with( less( \"first\" ) )\n"
"v exactly( 2/2 ).with( \"second\" )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
}
e.reset();
}
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().once();
const std::string expected = "my function\n"
". once().with( any )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().once().with( mock::any );
const std::string expected = "my function\n"
". once().with( any )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().once();
const std::string expected = "my function\n"
". once().with( any )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().once().with( &custom_constraint );
const std::string expected = "my function\n"
". once().with( ? )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().once().with( mock::constraint( &custom_constraint, "custom constraint" ) );
const std::string expected = "my function\n"
". once().with( custom constraint )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
{
mock::function< void( int ) > e;
e.tag( "my function" );
e.expect().once().with( mock::constraint( &custom_constraint, true ) );
const std::string expected = "my function\n"
". once().with( true )";
BOOST_CHECK_EQUAL( expected, to_string( e ) );
e.reset();
}
}
BOOST_FIXTURE_TEST_CASE( expectation_with_remaining_untriggered_matches_upon_destruction_calls_untriggered_expectation, error_fixture )
{
std::auto_ptr< mock::function< void() > > e( new mock::function< void() > );
e->expect().once();
CHECK_ERROR( e.reset(), untriggered_expectation );
}
BOOST_FIXTURE_TEST_CASE( verifying_expectation_with_remaining_matches_disables_the_automatic_verification_upon_destruction, error_fixture )
{
mock::function< void() > e;
e.expect().once();
CHECK_ERROR( e.verify(), verification_failed );
}
BOOST_FIXTURE_TEST_CASE( triggering_no_match_call_disables_the_automatic_verification_upon_destruction, error_fixture )
{
mock::function< void() > e;
CHECK_ERROR( e(), no_match );
}
BOOST_FIXTURE_TEST_CASE( adding_a_matcher_reactivates_the_verification_upon_destruction, error_fixture )
{
std::auto_ptr< mock::function< void() > > e( new mock::function< void() > );
CHECK_ERROR( (*e)(), no_match );
e->expect().once();
CHECK_ERROR( e.reset(), untriggered_expectation );
}
BOOST_FIXTURE_TEST_CASE( throwing_an_exception_disables_the_automatic_verification_upon_destruction, error_fixture )
{
try
{
mock::function< void() > e;
e.expect().once();
throw std::exception();
}
catch( std::exception& )
{}
}
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