First, the theoretical study
1, learning lessons Mu Chapter 3
Unit testing is a software testing method, the test source code elements each of a plurality of units or modules set by this test method, the test program to use the program, to ensure their availability. With increasing degree of development of software, the cost of the original bug fixes will be higher. Unit testing on the early development of the software, can effectively reduce the cost of software development, and to reduce the number of bug in the software used in the process. The whole testing process is done through test cases, expected results, the value of the prefix and suffix value
TESTING method is generally divided into unit testing and white box method. Wherein the black box testing called functional test, in the case without considering the internal logic structure and internal properties of procedures, functions, input and output values is checked by the program meets expectations. Structure, also known as white box test and in the case of using the logical structure allows the internal program and related information, designed to test the value of the logical path of all programs tested. In contrast, the white-box testing can greatly increase code coverage, can improve the code quality in software design at the beginning.
2, the third chapter of "building law" study
Pair programming is a method of agile software development, two programmers work together on a computer. Usually by one person write the code, another person responsible for the review. And the roles between the two programmers are interchangeable. Pair programming process is a process of mutual supervision, after forcing the programmer must be frequent communication, can effectively upgrade their technological capabilities. In this specification and code into the code review plays an important role, which involves all aspects of program design, the relationship between the modules, design patterns. Lecture talked about the good programmers tend to think for several days as a variable name, which is a very interesting and illustrative examples have.
3, test-driven development
Test-driven development TDD-Test Driven Development is an Agile development model in practice, in short, namely: TDD refers first to write test code before writing the true function implementation code, and then implement the code based on the reconstruction needs. The basic test-driven development process is as follows:
Second, hands-on learning
1, the game of life was part of unit testing game_map
Referring to blog https://blog.csdn.net/mssora/article/details/53380276 , Mu lesson game_map of the unit test code, unit test code has been uploaded code repository https://github.com/NemoNemo03/N -Stock / Tree / Master / LIFE_GAME , tested a total of nine content, feedback were successful, as follows:
Code and test coverage analysis code, wherein the code game_map coverage was 85%, as follows:
2, improvements to the word search program
The contents of the learning unit testing, black box testing performed (white box codes is complex, not completed), simply enter some words were tested and found to meet the requirements of output, but the longer the test time, the main because the sentence structure is not clear, the code is too complicated, then re-written the code using the for loop, naming the new code, the structure is relatively clear, there was a marked improvement in speed. Specific code as follows:
1 import re 2 import profile 3 4 with open('document.txt', 'r') as f: 5 string = f.read() 6 str_list = string.lower() 7 words = str_list.split('.') 8 words_count = len(words) 9 10 11 with open('quety.txt', 'r') as f: 12 string = f.read() 13 str_query = string.lower() 14 word_query = re.split('[^a-zA-Z]+', str_query) 15 16 17 18 def words_xoy(words): 19 word_all_list = [] 20 for x in range(len(words)): 21 word_list = re.split('[^a-zA-Z]+', words[x]) 22 if '' in word_list: 23 word_list.remove('') 24 word_all_list.append(word_list) 25 return word_all_list 26 #print(words_xoy(words)) 27 28 29 def query(words,word_query): 30 word=word_query 31 for x in range(len(word)): 32 if word_query[x] in re.split('[^a-zA-Z]+', str_list): 33 word_all_list = words_xoy(words) 34 for i in range(len(word_all_list)): 35 for j in range(len(word_all_list[i])): 36 if word[x] == word_all_list[i][j]: 37 print(str(i+1)+'/'+str(j+1), end='\n') 38 else: 39 print('none',end=' ') 40 41 profile.run("query(words,word_query)")
Wherein the speed comparison of old and new code as follows:
The new code old code
Third, the learning record
| Learning phase | Learning Content | Learnings |
| 2019.3.2 14:00-17:00 | Software Engineering | Knowledge of unit testing |
| 2019.3.4 14:00-17:00 | "Building of the law" handouts | Understanding of the specific process of programming cooperation |
| 2019.3.5 14:00-17:00 | python based learning | The basic syntax of learning python |
| 2019.3.7 14:00-17:00 | python based learning | The basic syntax of learning python |
| 2019.3.8 08:00-2100
|
Online information, programming | Familiar with the process of writing a python program |
IV Summary
With in-depth study of software engineering, understand the importance of specific software development process and science of software development. Especially unit testing application, it can help programmers to detect problems in a timely manner to solve the problem, after the software development process have to learn to make good use of unit testing. Development cooperation is an effective way of software development, in the process of joint development should pay attention to the code specifications, and code review, a good working relationship can greatly enhance the quality of programming and programming efficiency. In the course of practice are not familiar with the language of python, programming efficiency is very low, hoping to improve the learning process in the future.