new_contents: import pytest
  import dbus
  
  COMPONENT_IFACE = 'org.a11y.atspi.Component'
  
  COORD_TYPE_WINDOW = 1
  LAYER_WIDGET = 3
  
  def test_contains(registry_root, session_manager):
      assert registry_root.Contains(0, 0, COORD_TYPE_WINDOW, dbus_interface=COMPONENT_IFACE) == False
  
  def test_get_accessible_at_point(registry_root, session_manager):
      (name, path) = registry_root.GetAccessibleAtPoint(0, 0, COORD_TYPE_WINDOW, dbus_interface=COMPONENT_IFACE)
      assert path == '/org/a11y/atspi/null'
  
  def test_get_extents(registry_root, session_manager):
      assert registry_root.GetExtents(COORD_TYPE_WINDOW, dbus_interface=COMPONENT_IFACE) == (0, 0, 1024, 768)
  
  def test_get_position(registry_root, session_manager):
      assert registry_root.GetPosition(COORD_TYPE_WINDOW, dbus_interface=COMPONENT_IFACE) == (0, 0)
  
  def test_get_size(registry_root, session_manager):
      assert registry_root.GetSize(dbus_interface=COMPONENT_IFACE) == (1024, 768)
  
  def test_get_layer(registry_root, session_manager):
      assert registry_root.GetLayer(dbus_interface=COMPONENT_IFACE) == LAYER_WIDGET
  
  def test_get_mdi_z_order(registry_root, session_manager):
      assert registry_root.GetMDIZOrder(dbus_interface=COMPONENT_IFACE) == 0
  
  def test_grab_focus(registry_root, session_manager):
      assert registry_root.GrabFocus(dbus_interface=COMPONENT_IFACE) == False
  
  def test_get_alpha(registry_root, session_manager):
      assert registry_root.GetAlpha(dbus_interface=COMPONENT_IFACE) == 1.0
  
subject: Add tests for the registry's root object's Component interface