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/* Copyright © 2006-2007 Roger Leigh <rleigh@codelibre.net>
*
* schroot is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* schroot is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*
*********************************************************************/
#include <sbuild/sbuild-lock.h>
#include <iostream>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <cppunit/extensions/HelperMacros.h>
#include <config.h>
using namespace CppUnit;
class test_file_lock : public TestFixture
{
CPPUNIT_TEST_SUITE(test_file_lock);
CPPUNIT_TEST(test_none_none_lock);
CPPUNIT_TEST(test_none_shr_lock);
CPPUNIT_TEST(test_none_excl_lock);
CPPUNIT_TEST(test_shr_none_lock);
CPPUNIT_TEST(test_shr_shr_lock);
CPPUNIT_TEST_EXCEPTION(test_shr_excl_lock, sbuild::lock::error);
CPPUNIT_TEST(test_excl_none_lock);
CPPUNIT_TEST_EXCEPTION(test_excl_shr_lock, sbuild::lock::error);
CPPUNIT_TEST_EXCEPTION(test_excl_excl_lock, sbuild::lock::error);
CPPUNIT_TEST_SUITE_END();
protected:
int fd;
sbuild::file_lock *lck;
public:
test_file_lock():
TestFixture(),
fd(-1),
lck(0)
{
// Remove test file if it exists.
unlink(TESTDATADIR "/filelock.ex1");
}
virtual ~test_file_lock()
{}
void setUp()
{
this->fd = open(TESTDATADIR "/filelock.ex1", O_RDWR|O_EXCL|O_CREAT, 0600);
CPPUNIT_ASSERT(this->fd >= 0);
ssize_t wsize = write(this->fd,
"This file exists in order to test "
"sbuild::file_lock locking.\n", 61);
CPPUNIT_ASSERT(wsize == 61);
this->lck = new sbuild::file_lock(this->fd);
CPPUNIT_ASSERT(lck != 0);
}
void tearDown()
{
CPPUNIT_ASSERT(lck != 0);
this->lck->unset_lock();
delete this->lck;
CPPUNIT_ASSERT(close(this->fd) == 0);
CPPUNIT_ASSERT(unlink(TESTDATADIR "/filelock.ex1") == 0);
}
void test(sbuild::lock::type initial,
sbuild::lock::type establish)
{
this->lck->unset_lock();
int pid = fork();
CPPUNIT_ASSERT(pid >= 0);
if (pid == 0)
{
try
{
this->lck->set_lock(initial, 1);
// Note: can cause unexpected success if < 4. Set to 8 to
// allow for slow or heavily-loaded machines.
sleep(4);
this->lck->unset_lock();
}
catch (std::exception const& e)
{
try
{
this->lck->unset_lock();
}
catch (std::exception const& ignore)
{
}
std::cerr << "Child fail: " << e.what() << std::endl;
_exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
}
else
{
try
{
sleep(2);
this->lck->set_lock(establish, 1);
int status;
CPPUNIT_ASSERT(waitpid(pid, &status, 0) >= 0);
CPPUNIT_ASSERT(WIFEXITED(status) && WEXITSTATUS(status) == 0);
}
catch (std::exception const& e)
{
int status;
waitpid(pid, &status, 0);
throw;
}
}
}
void test_none_none_lock()
{
test(sbuild::lock::LOCK_NONE, sbuild::lock::LOCK_NONE);
}
void test_none_shr_lock()
{
test(sbuild::lock::LOCK_NONE, sbuild::lock::LOCK_SHARED);
}
void test_none_excl_lock()
{
test(sbuild::lock::LOCK_NONE, sbuild::lock::LOCK_EXCLUSIVE);
}
void test_shr_none_lock()
{
test(sbuild::lock::LOCK_SHARED, sbuild::lock::LOCK_NONE);
}
void test_shr_shr_lock()
{
test(sbuild::lock::LOCK_SHARED, sbuild::lock::LOCK_SHARED);
}
void test_shr_excl_lock()
{
test(sbuild::lock::LOCK_SHARED, sbuild::lock::LOCK_EXCLUSIVE);
}
void test_excl_none_lock()
{
test(sbuild::lock::LOCK_EXCLUSIVE, sbuild::lock::LOCK_NONE);
}
void test_excl_shr_lock()
{
test(sbuild::lock::LOCK_EXCLUSIVE, sbuild::lock::LOCK_SHARED);
}
void test_excl_excl_lock()
{
test(sbuild::lock::LOCK_EXCLUSIVE, sbuild::lock::LOCK_EXCLUSIVE);
}
};
CPPUNIT_TEST_SUITE_REGISTRATION(test_file_lock);
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