Want to change jobs? Do you know the seven skills you need to master in the interview software test

Catalog

One 、 Test case writing

Two 、 Common ways to write test cases ：

3、 ... and 、http Protocol principle

1、http Protocol principle

2、TCP and UDP difference

3、get and post difference

Four 、 Understand business capabilities

5、 ... and 、 Use of test tools

Performance testing tools ：jmeter

6、 ... and 、 Automated testing of code writing capabilities

Interface automation writing

7、 ... and 、Linux

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One 、 Test case writing

1、 The most important document in testing , He It's the core of the testing work , Is a set of input and output standards when testing , It's a specific comparison of software requirements . Write test cases , It's the basic skill of the tester , There are not many people who can really write well .

What the test case contains ：

Use case number , Use case name , Test background , precondition , priority , Test data , testing procedure , Expected results , The actual result , remarks .

2、 When the test partner gets the first requirement document , Analyze , Extract test points , Write test cases , And then it's called development , Use case review by product and related personnel .

Two 、 Common ways to write test cases ：

• Division of equivalence class

• Boundary value analysis

• Wrong inference

• Flow chart method, etc

3、 Learn to question needs , Don't write test cases exactly according to requirements , want Understand requirements from the perspective of users , See functions and experiences beyond the needs .

                      

3、 ... and 、http Protocol principle

1、http Protocol principle

HTTP Agreement is Hyper Text Transfer Protocol（ Hypertext transfer protocol ） Abbreviation , yes From the World Wide Web （WWW:World Wide Web ） The server transmits hypertext to the local browser .

2、TCP and UDP difference

TCP and UDP yes OSI Protocol in transport layer in model .TCP Provide reliable communication transmission , and UDP It is often used for the communication transmission of broadcasting and detail control to the application .

3、get and post difference

• Get：  it For obtaining information , It's just getting 、 Query data , That is, it doesn't modify the data on the server , At this point , It is Data security , And I'll talk about it later Post It can modify the data , So that's one of the differences .

• Post：  It is You can send a modification request to the server , To modify the server's , For example , We need to post back on the forum 、 Comment on the blog , That's what we need Post 了 , Of course, it can only get data .

Four 、 Understand business capabilities

First of all, make sure you understand the business , Only know the business , Only in this way can the function test be done well , And there will be some improvement .

• When to access Automation ？

  When your system stabilizes .

• When to intervene in interface testing ？

  When the interface is developed .

• When to intervene in performance testing ？

  When there's a promotion , Or rush shopping, etc .

                         

5、 ... and 、 Use of test tools

• Interface testing tool ：

  Postman Use Postman Conduct interface test , Input url Address , Request method , Click send to check whether the interface is correct .

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  Performance testing tools ：jmeter

• Use jmeter Test the performance of the system , Pressure test the system 、 The load test 、 Stability test, etc
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6、 ... and 、 Automated testing of code writing capabilities

• ui Automated writing

  web automation ： Generally used python+selenium Yes web Website ui Automated scripting

  app automation ： Generally used python+appuim On the mobile terminal ui Automated scripting

Generally, it doesn't meet the demand bug stay debug in , The error of the program itself is error in .

7、 ... and 、Linux

1、Linux It's the basic skill of the tester , You don't need to master something that's too difficult or unusual Linux command , You can check the log normally , The positioning problem is OK .

2、 Junior testers often encounter , Find out bug, Situations that developers do not recognize or are unwilling to solve , How can testers get rid of this problem ？ According to the findings bug The level of logging , To check the log , Location problem , First of all, let's talk about the log level . The higher the log level , The less information you output .

• Interface automation writing

  Generally used python+requests For interface automation testing

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• Skillfully use SQL

• frequently-used sql sentence , Such as adding, deleting, modifying and checking .

• Understand database transactions , Write stored procedures , Familiar with common system functions .

• Understand and be able to backup the database , transfer , Restore , Mirror image, etc .

• Yes sql Statement to tune , And monitor the statements that can be run to see the performance .

• Understand the clustering of databases .

• info： Code info Information , barring sql Sentences and so on debug Information ;

• warning ： Code warning message ;

• error :  The program itself reports an error message ;

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