@covers Symfony\Component\DependencyInjection\ParameterBag\ParameterBag::clear
public function testClear() {
$bag = new ParameterBag($parameters = array(
'foo' => 'foo',
'bar' => 'bar',
));
$bag
->clear();
$this
->assertEquals(array(), $bag
->all(), '->clear() removes all parameters');
}