public function testExchangeArraySetsPropertiesToNullIfKeysAreNotPresent() { $form = new Form(); $form->exchangeArray(array('name' => 'some name', 'id' => 123)); $form->exchangeArray(array()); $this->assertNull($form->name, '"name" should have defaulted to null'); $this->assertNull($form->id, '"id" should have defaulted to null'); }