'Drag vertical "1.1.2" from subsection "1.1" into collapsed subsection "1.2" which already
have its own verticals.'

def test_drop_unit_in_collapsed_subsection(self):

    course_outline_page = self.course_outline_page.visit()
    course_outline_page.q(css='.outline-item.outline-subsection.is-collapsed    .ui-toggle-expansion').first.click()
    expected_ordering = [{'1': ['1.1', '1.2']}, {'1.1': ['1.1.1']}, {'1.2': ['1.1.2', '1.2.1', '1.2.2']}]
    self.drag_and_verify(self.seq_1_vert_2_handle, self.chap_1_seq_2_handle, expected_ordering, course_outline_page)
