keymap_test.py 文件源码

def test_evaluated_key_does_not_replace_original_key(self):
        # Create a list of widgets that translate 'j' to 'down' in their
        # keypress() methods.
        lst_contents = [self.mk_widget(urwid.Text, str(i), context='item')
                        for i in range(1, 10)]
        self.keymap.bind('j', context='item', action=Key('down'))

        # Create ListBox with separate key context.  If the ListBox gets to
        # handle 'j', it just checks a mark we can look for.
        lst_widget = self.mk_widget(urwid.ListBox, urwid.SimpleFocusListWalker(lst_contents), context='list')
        lst_got_j = FakeAction()
        self.keymap.bind('j', context='list', action=lst_got_j)

        # Make sure everything works regularly
        size = (3, 3)
        self.assert_lines(lst_widget, size, exp_lines=('1  ', '2  ', '3  '), exp_focus_pos=0)
        lst_widget.keypress(size, 'down')
        self.assert_lines(lst_widget, size, exp_lines=('1  ', '2  ', '3  '), exp_focus_pos=1)

        # Do the actual test: Pressing 'j' should pass 'j' to the focused item,
        # which evaluates it to 'down'.  But the list widget must get 'j'.
        lst_widget.keypress(size, 'j')
        self.assert_lines(lst_widget, size, exp_lines=('1  ', '2  ', '3  '), exp_focus_pos=1)
        self.assertEqual(lst_got_j.callnum, 1)