def test_removeRows_remove_all_rows(self):
model = ArrayModel()
model.reset(Array([5.0, 3.0, 7.0]))
self.assertTrue(model.removeRows(0, 3))
self.assertEqual(model.rowCount(), 1)
index = model.index(0, 0)
self.assertIsNone(index.data())
def test_removeRows_when_empty_array(self):
model = ArrayModel()
self.assertFalse(model.removeRows(0, 1))