public function testLockLifetimeShouldBeZeroIfItContainsAInvalidPid()
{
if ($this->helper->getPlatform() === Helper::WINDOWS) {
$this->markTestSkipped("Test relies on posix_ functions");
}
file_put_contents($this->lockFile, 'invalid-pid');
$this->assertEquals(0, $this->helper->getLockLifetime($this->lockFile));
}