unordered/test/helpers/count.hpp
2017-12-03 14:24:47 +00:00

90 lines
2.1 KiB
C++

// Copyright 2008-2009 Daniel James.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or move at http://www.boost.org/LICENSE_1_0.txt)
#if !defined(BOOST_UNORDERED_TEST_HELPERS_COUNT_HEAD)
#define BOOST_UNORDERED_TEST_HELPERS_COUNT_HEAD
#include <boost/core/lightweight_test.hpp>
namespace test {
struct object_count
{
int instances;
int constructions;
object_count() : instances(0), constructions(0) {}
void reset() { *this = object_count(); }
void construct()
{
++instances;
++constructions;
}
void destruct()
{
if (instances == 0) {
BOOST_ERROR("Unbalanced constructions.");
} else {
--instances;
}
}
bool operator==(object_count const& x) const
{
return instances == x.instances && constructions == x.constructions;
}
bool operator!=(object_count const& x) const { return !(*this == x); }
friend std::ostream& operator<<(std::ostream& out, object_count const& c)
{
out << "[instances: " << c.instances
<< ", constructions: " << c.constructions << "]";
return out;
}
};
// This won't be a problem as I'm only using a single compile unit
// in each test (this is actually require by the minimal test
// framework).
//
// boostinspect:nounnamed
namespace {
object_count global_object_count;
}
struct counted_object
{
counted_object() { global_object_count.construct(); }
counted_object(counted_object const&) { global_object_count.construct(); }
~counted_object() { global_object_count.destruct(); }
};
struct check_instances
{
int instances_;
int constructions_;
check_instances()
: instances_(global_object_count.instances),
constructions_(global_object_count.constructions)
{
}
~check_instances()
{
BOOST_TEST(global_object_count.instances == instances_);
}
int instances() const { return global_object_count.instances - instances_; }
int constructions() const
{
return global_object_count.constructions - constructions_;
}
};
}
#endif