else esp 執行 bre pri [] 運行 返回 代碼

2018年8月9日發布，後續補上註釋等文字說明 ———————————— 首先需要測試代碼 name_function.py是一個簡單的函數，獲取前後兩個名字，然後組合起來

def get_formatted_name(first,last,middle=‘‘):
    if middle:
        full_name = first + ‘ ‘ + middle + ‘ ‘ + last
    else:
        full_name = first + ‘ ‘ + last
    return full_name.title()

names.py讓用戶輸入名字，並輸出

from
 
 name_function import get_formatted_name
 
print("enter")
 
while True:
    firstname = input("enter first: ")
    if firstname == ‘q‘:
        print("exit")
        break
 
    lastname = input("enter second: ")
    if lastname == ‘q‘:
        print("exit")
        break
 
    fullname = get_formatted_name(firstname,lastname)
    
 
print(‘full name: ‘,fullname)

運行結果

1 enter
2 enter first: zhang
3 enter second: san
4 full name:  Zhang San
5 enter first: q
6 exit

如果想要在name_function.py函數的first和last添加一個中間名，為了驗證之前的函數是否能夠正常工作，可以在每次修改後都去驗證get_formatted_name(first,last)進行測試，未免太麻煩了。 Python提供了這樣一種自動測試函數輸出的方法，unittest。

import unittest
 
from name_function import get_formatted_name
 
class NameTestCase(unittest.TestCase):
    def test_first_last_name(self):
        formatted_name = get_formatted_name(‘janis‘,‘joplin‘)
        self.assertEqual(formatted_name,‘Janis Joplin‘)
 
    def test_first_last_middle_name(self):
        formatted_name = get_formatted_name(‘wolfgang‘,‘mozart‘,‘amadeus‘)
        self.assertEqual(formatted_name,‘Wolfgang Amadeus Mozart‘)
 
unittest.main()

以上代碼，導入模塊以及要被測試的函數， 通過調用函數，斷言與返回的formatted_name判斷結果，最後unittest.main()執行以上結果。 運行結果

..
----------------------------------------------------------------------
Ran 2 tests in 0.000s
 
OK

再寫一段代碼 survey.py

class AnoymousSurvey():
    def __init__(self,question):
        self.question = question
        self.responses = []
 
    def show_question(self):
        print(self.question)
 
    def store_response(self,new_response):
        self.responses.append(new_response)
 
    def show_results(self):
        print("Survey results: ")
        for response in self.responses:
            print("- ",response)

language_servey.py

from survey import AnoymousSurvey
 
question = "what language you first learn"
my_survey = AnoymousSurvey(question)
 
my_survey.show_question()
print("enter q to quit")
 
while True:
    response = input("language: ")
    if response == ‘q‘:
        break
    my_survey.store_response(response)
 
print("--")
print("thank your input")
 
my_survey.show_results()

通過用戶輸入信息，然後存入列表，接著打印出來 接著使用unittest，test_survey.py

from survey import AnoymousSurvey
import unittest
 
 
class TestAnonymousSurvey(unittest.TestCase):
    def test_store_single_response(self):
        question = "what language you first learn1"
        my_survey = AnoymousSurvey(question)
        my_survey.show_question()
        my_survey.store_response(‘English‘)
        self.assertIn(‘English‘,my_survey.responses)
 
    def test_store_three_response(self):
        question = "what language you first learn2"
        my_survey = AnoymousSurvey(question)
        my_survey.show_question()
        responses = [‘English‘,‘Spanish‘,‘Chinese‘]
        for response in responses:
            my_survey.store_response(response)
            self.assertIn(response,my_survey.responses)
 
if __name__ == ‘__main__‘:
    unittest.main()

或者使用setUp方法

import unittest
from survey import AnoymousSurvey
 
class TestAnonymousSurvey(unittest.TestCase):
    def SetUp(self):
        question = "what language you first learn"
        self.my_survey = AnoymousSurvey(question)
        self.responses = [‘English‘,‘Spanish‘,‘Chinese‘]
 
    def test_store_single_response(self):
        self.my_survey.store_response(self.responses[0])
        self.assertIn(self.responses[0],self.my_survey.responses)
 
    def test_store_three_response(self):
        for response in self.responses:
            self.my_survey.store_response(response)
        for response in self.responses:
            self.assertIn(response,self.my_survey.response)
 
if __name__ == ‘__main__‘:
    unittest.main()

Python單元測試unittest