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fee386826147fb27d0bf17442319421ecd86375f
leaf/test/optional_test.cpp
Emil Dotchevski fee3868261 documentation, cosmetic changes
2019-01-13 09:13:54 -08:00

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// Copyright (c) 2018 Emil Dotchevski
// Copyright (c) 2018 Second Spectrum, Inc.
// 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 <boost/leaf/detail/optional.hpp>
#include "boost/core/lightweight_test.hpp"
namespace leaf = boost::leaf;
int object_count=0;
int value_count=0;
class my_info
{
my_info & operator=( my_info const & ) = delete;
public:
int value;
explicit my_info( int value ):
value(value)
{
BOOST_TEST(++object_count>0);
BOOST_TEST(++value_count>0);
}
my_info( my_info const & x ):
value(x.value)
{
BOOST_TEST(++object_count>0);
BOOST_TEST(++value_count>0);
}
my_info( my_info && x ):
value(x.value)
{
x.value=-1;
BOOST_TEST(++object_count>0);
}
~my_info()
{
BOOST_TEST(--object_count>=0);
if( value!=-1 )
BOOST_TEST(--value_count>=0);
}
};
class throws_on_copy
{
throws_on_copy & operator=( throws_on_copy const & )=delete;
public:
int value;
throws_on_copy()
{
BOOST_TEST(++object_count>0);
}
throws_on_copy( throws_on_copy const & )
{
throw std::exception();
}
throws_on_copy( throws_on_copy && )
{
BOOST_TEST(++object_count>0);
}
~throws_on_copy()
{
BOOST_TEST(--object_count>=0);
}
};
void run_tests()
{
using leaf::leaf_detail::optional;
{
optional<my_info> x;
BOOST_TEST(!x.has_value());
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
my_info a(42);
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
optional<my_info> x(a);
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
throws_on_copy a;
BOOST_TEST(object_count==1);
try
{
optional<throws_on_copy> x(a);
BOOST_TEST(false);
}
catch( std::exception & )
{
}
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
my_info a(42);
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
optional<my_info> x(std::move(a));
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
optional<my_info> y(x);
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
BOOST_TEST(y.has_value());
BOOST_TEST(y.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
optional<my_info> y(std::move(x));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(!x.has_value());
BOOST_TEST(y.has_value());
BOOST_TEST(y.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
optional<my_info> y;
BOOST_TEST(&(y=x)==&y);
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
BOOST_TEST(y.has_value());
BOOST_TEST(y.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
optional<my_info> y(my_info(43));
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(&(y=x)==&y);
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
BOOST_TEST(y.has_value());
BOOST_TEST(y.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<throws_on_copy> x((throws_on_copy()));
BOOST_TEST(object_count==1);
BOOST_TEST(x.has_value());
optional<throws_on_copy> y;
try
{
(void) (y=x);
}
catch( std::exception & )
{
}
BOOST_TEST(object_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(!y.has_value());
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
optional<my_info> y;
BOOST_TEST(&(y=std::move(x))==&y);
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(!x.has_value());
BOOST_TEST(y.has_value());
BOOST_TEST(y.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
optional<my_info> y(my_info(43));
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(&(y=std::move(x))==&y);
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(!x.has_value());
BOOST_TEST(y.has_value());
BOOST_TEST(y.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x;
my_info a(42);
x.put(a);
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(43));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
my_info a(42);
x.put(a);
BOOST_TEST(object_count==2);
BOOST_TEST(value_count==2);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x;
x.put(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(43));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
x.put(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
BOOST_TEST(x.value().value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
my_info a = std::move(x).value();
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(!x.has_value());
BOOST_TEST(a.value==42);
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
{
optional<my_info> x(my_info(42));
BOOST_TEST(object_count==1);
BOOST_TEST(value_count==1);
BOOST_TEST(x.has_value());
x.reset();
BOOST_TEST(!x.has_value());
}
BOOST_TEST(!object_count);
BOOST_TEST(!value_count);
}
int main()
{
run_tests();
return boost::report_errors();
}
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