/** * @covers ::addCleanValueKey */ public function testAddCleanValueKey() { $form_state = new FormState(); $form_state->setValue('value_to_clean', 'rainbow_sprinkles'); $form_state->addCleanValueKey('value_to_clean'); $this->assertSame($form_state->getCleanValueKeys(), ['form_id', 'form_token', 'form_build_id', 'op', 'value_to_clean']); return $form_state; }