我正在使用100天的代码。其中一个项目是对所选项目实施pytest。我选择了以前的项目,该项目采用了定义的汽车制造商和型号字典,并将输出返回给各种问题。我已经为其中两个功能编写了单元测试,但它们均失败了。
从控制台为功能get_all_jeeps()
运行代码将返回:
大切诺基,切诺基,特雷霍克,Trackhawk
如果我使用以下代码运行pytest:
def test_get_all_jeeps():
expected = 'Grand Cherokee, Cherokee, Trailhawk, Trackhawk'
actual = get_all_jeeps()
assert type(actual) == str
assert actual == expected
它失败,因为pytests输出看起来像正在排序。为什么要这么做?
E AssertionError: assert 'Cherokee, Gr...wk, Trailhawk' == 'Grand Cherokee...wk, Trackhawk'
E - Cherokee, Grand Cherokee, Trackhawk, Trailhawk
E + Grand Cherokee, Cherokee, Trailhawk, Trackhawk
另一个测试与从控制台运行时给出的输出不同。来自控制台的功能get_first_model_each_manufacturer()
的输出为:
['Falcon','Commodore','Maxima','Civic','Grand Cherokee']
除了无法通过pytest:
def test_get_first_model_each_manufacturer():
expected = ['Falcon', 'Commodore', 'Maxima', 'Civic', 'Grand Cherokee']
actual = get_first_model_each_manufacturer()
assert type(actual) == list
> assert actual == expected
E AssertionError: assert ['Fairlane', ...', 'Cherokee'] == ['Falcon', 'Co...and Cherokee']
E on index 0 diff: 'Fairlane' != 'Falcon'
E Use -v to get the full diff
“ Fairlane”物品如何到达那里? pytest有何不同之处?
在此处https://github.com/cadamei/100daysofcode/tree/master/days/10-12-pytest
回购所有函数都使用此字典作为数据:
cars = {
'Ford': ['Falcon', 'Focus', 'Festiva', 'Fairlane'],
'Holden': ['Commodore', 'Captiva', 'Barina', 'Trailblazer'],
'Nissan': ['Maxima', 'Pulsar', '350Z', 'Navara'],
'Honda': ['Civic', 'Accord', 'Odyssey', 'Jazz'],
'Jeep': ['Grand Cherokee', 'Cherokee', 'Trailhawk', 'Trackhawk']
答案 0 :(得分:0)
您的cars.py脚本正在修改列表,因为它在导入时正在运行print(sort_car_models())
,请删除这些行或将其放入if __name__ == '__main__':
要了解更多信息,请查看What does if __name__ == "__main__": do?