public function testAddMessage() { $builder = new FieldsBuilder('fields'); $builder->addMessage('Warning', 'This is my message'); $expectedConfig = ['fields' => [['key' => 'field_fields_warning_message', 'name' => 'warning_message', 'label' => 'Warning', 'message' => 'This is my message']]]; $this->assertArraySubset($expectedConfig, $builder->build()); }