Software testing weekly (No. 81): what can resist negativity is not positivity, but concentration; What can resist anxiety is not comfort, but concrete.

It's today 2022 year 07 month 22 Japan , Welcome to 81 period ！ Here's a record of what we've seen in the past week Software testing and peripherals Industry trends , Released on Friday .

This issue focuses on ： from 0 To 1 Conduct software testing ; How does Zhongtong test IM Of ？ How to test your test ？Vitest: front end TDD A great weapon of ;Scrum What are the limitations of the framework ？ Count thousands of lines of code Bug Is the rate meaningful ？ What exactly is engineer culture ？ How do we record pictures ？ How can a master find his flywheel ？

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Happy reading !

software test

1. from 0 To 1 Conduct software testing

Wu rang （ Sound network developer ）

This paper systematically introduces the development and practical experience of software testing .

Original address ： from 0 To 1 Conduct software testing

2. How does Zhongtong test IM Of ？

long-horned grasshopper （ Zhongtong in science and technology ）

Instant messaging （Instant Message, abbreviation IM） Is a terminal service , Allow two or more people to use the network to transmit text messages instantly 、 picture 、 voice 、 Videos and files .

IM The focus of the test is to carry out specific test activities around the message , This article also aims to Share Zhongtong self research IM In the system “ news ” Practical experience of testing .

Open source address ： zhongtong IM Test practice

3. How to test your test ？

Uncle Ding （ Agile testing transformation ）

This article is translated by the author from facebook About flaky test（ Vulnerability testing ） Quantitative measurement and application of ,Flaky test, Some people translate it into unreliable tests , Sometimes it is described by , Sometimes it doesn't pass , There is no definite failure recurrence probability .

Although we use automated regression testing to detect product quality , But until now , We can't yet Automatically detect whether the test itself is deteriorating . Automatic testing is a special kind of software , With the development of the code base , It may become unreliable . Unreliable tests （ Also known as fragile testing ,flaky test） Will produce false or uncertain signals , Thus undermining the trust of engineers , Affect the effectiveness of the whole regression test process .

Original address ： Talk about how to test your test （ Translated from Meta）

4. Vitest: front end TDD A great weapon of

alexzhang1030

TDD yes Test-driven development （Test-Driven Development） Short for , Is a core practice and technology in agile development , It's also a design methodology .TDD The principle is before the development of functional code , Write unit test case code first , The test code determines what product code needs to be written .

Vite yes Vue Written by you Yuxi based on ESM A front-end packaging tool for modern browsers .

and Vitest The positioning of , It is Vite The preferred testing framework for the project , And because Vitest Excellent enough , The author believes that even if your project adopts jest As a test framework , Or not to Vite As a project driver , You can still use or switch Vitest As a test framework .

Original address ： Vitest: front end TDD A great weapon of - Nuggets

Quality effectiveness

1. Scrum What are the limitations of the framework ？

Mark Levison（Lance Zhang Equal translation ）

The author is often asked in seminars ：“Scrum Where does it not apply ？” The short answer is , In many cases Scrum The framework is not suitable .

however , In order to answer this question more comprehensively and effectively , First , We need to know Scrum Why and when are they effective and what are the key conditions for success . then , We can show Scrum Some examples that do not apply .

Original address ： Scrum What are the limitations of the framework ？

2. Count thousands of lines of code Bug Is the rate meaningful ？

kingname（ Unheard of Code）

The author concludes that ： Statistics Bug Rate makes sense . But statistics thousand lines of code Bug Rate is meaningless .

Why do you say that ？

Original address ： Count thousands of lines of code Bug rate , Does it make sense ？

🦧 Technical co frequency

1. What exactly is engineer culture ？

Tencent Technology

Professor of engineering at Princeton University David Billington Said ：“ Science is about discovering things that already exist , And engineering is to make things that never existed in the past ”.

To be an excellent engineer , A thorough understanding of engineer culture is a major prerequisite . More and more enterprises are emphasizing engineer culture .

And after all What is engineer culture ？ Implement it in the way of work , How to embody the engineer culture ？

Original address ： What exactly is engineer culture ？

2. How do we record pictures ？

Sun Chenran （Tecvan）

We need to deal with various image formats everyday , So that some knowledge has almost become common sense , For example, we should all know PNG Transparency can be supported ,JPG It can be compressed to a lower quality , and GIF Then the dynamic diagram can be displayed …… however ,

You know that How different image formats are produced 、 And evolved so far ？

Original address ： How do we record pictures ？

Continued growth

1. How can a master find his flywheel ？

Note man

Flywheel effect , Is to enhance the loop .

What is the enhanced loop ？

Because of the enhancement of fruit , Fruit in turn enhances cause , Forming loop , Cycle by cycle enhancement , Namely “ Enhanced loop ”.

The more successful a person is , There will be more high-quality resources to cooperate with him ; Cooperate with more high-quality resources , The more successful he is . Between success and quality resources , reciprocal causation , Stimulate each other , Cycle zoom .

A university , The better the graduates are , The more excellent students apply for the exam ; More excellent students apply for the exam , The better the graduates are . Between excellent freshmen and excellent graduates , reciprocal causation , Stimulate each other , Cycle zoom .

Original address ： master , Are good at finding their own flywheel

2. 100 Business thinking, understand Zhang Ruimin

Tian Shanshan （ Lishi Business Review ）

Entrepreneurs who have excellent performance in business practice and management thought , Zhang Ruimin is a leader .

This article combs his 100 Article business thinking , The following is a summary ：

1. Emperor Taizong once asked his ministers , Which is difficult to start a business or to keep it ？ The answer in his mind is , It's hard to start a business , It's harder to stay in business . Haier's corporate culture answers this question , There will never be a correct answer if we separate entrepreneurship from business keeping , The only way out is , Only Entrepreneurship , No business .
2. Effective prevention is necessary , Turn exception management into routine management .

1. OEC Mode management ：“OEC” Refer to Overall（ comprehensive ）;Everyone、Everything、Everyday （ Everyone 、 Everything 、 Every day ）;Control and Clear（ Control and cleaning ） Three character prefix , It means to control and clean up everything everyone does every day in an all-round way , Also known as “ The end of the day , Clear day, high day ” Management Law .
2. Defective products are waste .
3. All units “ Fight the enemy separately ”, But don't “ act of one 's own free will ”.
4. In the final analysis, the management system is the manager . As long as it's people , All hope to be respected by others , All hope that their values will be recognized . in other words , You connect the value of employees with the value they create for users , As long as he creates value for users , You affirm his value . That's the core .
5. Change more ideas and less people , Not-for-thought to substitutions .
6. Culture is the soul of an enterprise . As long as the thought and understanding are consistent , Unified , Everything is easy .
7. What we develop is the market , Not the product . There is no weak market , Only weak products .
8. Change your mind , As ideas change, the world becomes wider .
9. Behind every kind of management is culture and thinking .

Original address ： this 100 Article business thinking , Help us understand Zhang Ruimin

Embrace open source

1. DiceBear： Generate simple and cute user avatars

DiceBear, An open source avatar Generation Library , By a given unique identifier , Help developers and designers quickly , Generate a simple and cute user Avatar . It also provides API, For developers to access and call .

Open source address ： GitHub - dicebear/dicebear: DiceBear is an avatar library for designers and developers.

2. DevToys： A set of practical transformation tool suite to improve the efficiency of developers

Open source address ： macOS：GitHub - ObuchiYuki/DevToysMac: DevToys For mac Windows：GitHub - veler/DevToys: A Swiss Army knife for developers.

speech

1、 Even the most intelligent people , Don't hang out with fools for a long time , Otherwise, there will be another fool . | Wooden heart 《 Where to go 》 2、 The funeral of Trump's first wife Ivana 20 It's on the upper east side of New York St. Vincent Ferrer The church held , Ivanka said when mourning his mother ：“ Growing up , My mother didn't tell me that a woman can do anything she wants , She showed me this with her actions . She once said , There is nothing she can't do in high heels .”

3、 How to maintain emotional stability ？

picture

1、HTML vs CSS vs JavaScript

2、 I think so vs I said

If it helps you , Remember Leaving a message. 、 give the thumbs-up 、 Pay more attention to Oh ！

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