def METHOD_NAME(self):
    sg = self._sequence_generator()
    update_value = next(sg)
    self.sheet.update_acell("A1", update_value)
    cell = self.sheet.acell("A1")
    same_cell = self.sheet.cell(1, 1)
    self.assertEqual(cell, same_cell)
    self.sheet.update_acell("A2", update_value)
    another_cell = self.sheet.acell("A2")
    self.assertNotEqual(cell, another_cell)
    self.sheet.update_acell("B1", update_value)
    another_cell = self.sheet.acell("B1")
    self.assertNotEqual(cell, another_cell)