def test_sub2(self):
print("测试浮点数sub")
s2 = Count(4589.87, 3978.78)
res2 = s2.sub()
print("实际计算结果：", res2)
if abs(res2 - 611.09) < 0.01:
res2 = 611.09
self.assertEqual(res2, 611.09)
def test_sub1(self):
print("测试整数sub")
s1 = Count(100, 20)
res1 = s1.sub()
print("实际计算结果：", res1)
self.assertEqual(res1, 80)
