code: def test_correct_key():
      pytest.xfail(
          "test_widget_send_event is not triggering key_press_event"
      )
  
      from gi.repository import Gdk, Gtk  # type: ignore
  
      fig = plt.figure()
      buf = []
  
      def send(event):
          for key, mod in [
              (Gdk.KEY_a, Gdk.ModifierType.SHIFT_MASK),
              (Gdk.KEY_a, 0),
              (Gdk.KEY_a, Gdk.ModifierType.CONTROL_MASK),
              (Gdk.KEY_agrave, 0),
              (Gdk.KEY_Control_L, Gdk.ModifierType.MOD1_MASK),
              (Gdk.KEY_Alt_L, Gdk.ModifierType.CONTROL_MASK),
              (
                  Gdk.KEY_agrave,
                  Gdk.ModifierType.CONTROL_MASK
                  | Gdk.ModifierType.MOD1_MASK
                  | Gdk.ModifierType.MOD4_MASK,
              ),
              (0xFD16, 0),  # KEY_3270_Play.
              (Gdk.KEY_BackSpace, 0),
              (Gdk.KEY_BackSpace, Gdk.ModifierType.CONTROL_MASK),
          ]:
              # This is not actually really the right API: it depends on the
              # actual keymap (e.g. on Azerty, shift+agrave -> 0).
              Gtk.test_widget_send_key(fig.canvas, key, mod)
  
      def receive(event):
          buf.append(event.key)
          if buf == [
              "A",
              "a",
              "ctrl+a",
              "\N{LATIN SMALL LETTER A WITH GRAVE}",
              "alt+control",
              "ctrl+alt",
              "ctrl+alt+super+\N{LATIN SMALL LETTER A WITH GRAVE}",
              # (No entry for KEY_3270_Play.)
              "backspace",
              "ctrl+backspace",
          ]:
              plt.close(fig)
  
      fig.canvas.mpl_connect("draw_event", send)
      fig.canvas.mpl_connect("key_press_event", receive)
      plt.show()
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_correct_key() without return types