public function test_can_add_existing_group_to_menu_wont_duplicate() { $this->mockContainerMake('test'); $this->menu->group('test'); $this->menu->group('test'); $this->menu->group('test'); $this->assertInstanceOf('Illuminate\\Support\\Collection', $this->menu->getGroups()); $this->assertCount(1, $this->menu->getGroups()); }