Method test_jumptoline

Lib/idlelib/idle_test/test_codecontext.py:302–341

(self)

        eq(cc.context.get('1.0', 'end-1c'), '    def __init__(self, a, b):')

    def test_jumptoline(self):
        eq = self.assertEqual
        cc = self.cc
        jump = cc.jumptoline

        if not cc.context:
            cc.toggle_code_context_event()

        # Empty context.
        cc.text.yview('2.0')
        cc.update_code_context()
        eq(cc.topvisible, 2)
        cc.context.mark_set('insert', '1.5')
        jump()
        eq(cc.topvisible, 1)

        # 4 lines of context showing.
        cc.text.yview('12.0')
        cc.update_code_context()
        eq(cc.topvisible, 12)
        cc.context.mark_set('insert', '3.0')
        jump()
        eq(cc.topvisible, 8)

        # More context lines than limit.
        cc.context_depth = 2
        cc.text.yview('12.0')
        cc.update_code_context()
        eq(cc.topvisible, 12)
        cc.context.mark_set('insert', '1.0')
        jump()
        eq(cc.topvisible, 8)

        # Context selection stops jump.
        cc.text.yview('5.0')
        cc.update_code_context()
        cc.context.tag_add('sel', '1.0', '2.0')
        cc.context.mark_set('insert', '1.0')
        jump()  # Without selection, to line 2.
        eq(cc.topvisible, 5)

    @mock.patch.object(codecontext.CodeContext, 'update_code_context')
    def test_timer_event(self, mock_update):