给定代码框架设计单元测试用例的驱动模块或者桩模块,给出具体例子
时间: 2023-08-15 12:39:26 浏览: 96
好的,我可以给您一个例子。假设我们有以下代码框架:
```python
def calculate_price(item_price, discount_rate):
discounted_price = item_price * (1 - discount_rate)
return discounted_price
```
我们需要编写用于测试这个函数的驱动程序或桩程序。这里我们可以编写一个简单的驱动程序,如下所示:
```python
def test_calculate_price():
# Test case 1: Verify that the function returns the correct discounted price
item_price = 100
discount_rate = 0.1
expected_discounted_price = 90
actual_discounted_price = calculate_price(item_price, discount_rate)
assert actual_discounted_price == expected_discounted_price, f"Expected {expected_discounted_price}, but got {actual_discounted_price}"
# Test case 2: Verify that the function returns the original price if the discount rate is 0
item_price = 100
discount_rate = 0
expected_discounted_price = 100
actual_discounted_price = calculate_price(item_price, discount_rate)
assert actual_discounted_price == expected_discounted_price, f"Expected {expected_discounted_price}, but got {actual_discounted_price}"
```
这个驱动程序包含了两个测试用例。第一个测试用例验证函数在给定折扣率的情况下是否能够正确计算折扣后的价格。第二个测试用例验证函数在折扣率为零的情况下是否能够正确返回原始价格。
我们可以运行这个驱动程序来测试 `calculate_price()` 函数,并确保它返回预期的结果。
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