Method test_init

Lib/idlelib/idle_test/test_squeezer.py:321–347

Test the simplest creation of an ExpandingButton.

(self, MockHovertip)

    @patch('idlelib.squeezer.Hovertip', autospec=Hovertip)
    def test_init(self, MockHovertip):
        """Test the simplest creation of an ExpandingButton."""
        squeezer = self.make_mock_squeezer()
        text_widget = squeezer.editwin.text

        expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
        self.assertEqual(expandingbutton.s, 'TEXT')

        # Check that the underlying tkinter.Button is properly configured.
        self.assertEqual(expandingbutton.master, text_widget)
        self.assertTrue('50 lines' in expandingbutton.cget('text'))

        # Check that the text widget still contains no text.
        self.assertEqual(text_widget.get('1.0', 'end'), '\n')

        # Check that the mouse events are bound.
        self.assertIn('<Double-Button-1>', expandingbutton.bind())
        right_button_code = '<Button-%s>' % ('2' if macosx.isAquaTk() else '3')
        self.assertIn(right_button_code, expandingbutton.bind())

        # Check that ToolTip was called once, with appropriate values.
        self.assertEqual(MockHovertip.call_count, 1)
        MockHovertip.assert_called_with(expandingbutton, ANY, hover_delay=ANY)

        # Check that 'right-click' appears in the tooltip text.
        tooltip_text = MockHovertip.call_args[0][1]
        self.assertIn('right-click', tooltip_text.lower())

    def test_expand(self):
        """Test the expand event."""