text: """Test Metaclass Property Page."""
  
  import pytest
  from gi.repository import Gtk
  
  from gaphor import UML
  from gaphor.diagram.tests.fixtures import find
  from gaphor.UML.profiles.metaclasspropertypage import MetaclassPropertyPage
  
  
  @pytest.fixture
  def class_(element_factory):
      class_ = element_factory.create(UML.Class)
      class_.name = "Class"
      yield class_
      del class_
  
  
  def test_name_input_field_for_normal_class(class_):
      """Test Metaclass Property Page not create for normal Class."""
  
      editor = MetaclassPropertyPage(class_)
      page = editor.construct()
  
      assert not page
  
  
  def test_name_selection_for_metaclass(element_factory, class_):
      """Test the creation of Metaclass Property Page."""
  
      stereotype = element_factory.create(UML.Stereotype)
      stereotype.name = "NewStereotype"
      UML.model.create_extension(class_, stereotype)
  
      editor = MetaclassPropertyPage(class_)
      page = editor.construct()
  
      assert page
  
      combo = find(page, "metaclass-combo")
  
      assert type(combo) is Gtk.ComboBoxText
      assert combo.get_child().get_text() == "Class"
  
      class_.name = "Blah"
  
      assert combo.get_child().get_text() == "Blah"
  