UI automated interview questions

1、 Automated processes

Before writing test cases , The team will discuss the project system , Make an assessment , Whether it can be automated , Those that can be automated , Usually smoke test cases are converted into automated scripts .

The test framework used is python Of selenium+unittest modular , For any function , We will build a test project first , Use testcase To store test cases , Use report To store test reports , At the same time, some common data and modules are placed in public in , Open a browser , Connect to database, etc , After debugging the script locally , We can use jenkins To periodically upload to git The script in the .

2、 Common element positioning methods are ？

ID、Name、class Name、link Text、tag Name、partial Link text、xpath、css selector

3、 Reasons for inaccurate element positioning ？

Page element not loaded ;

Element attribute values are dynamic ;

Element attribute values are not unique ;

Involves another （iframe) frame , Need to switch

Need elements on another page , Need to switch windows .

3、 How to locate element attribute values is dynamic ？

We can choose the unique of this element , It is not a dynamic attribute value to locate , Or use xpath、css To perform hierarchy + Attribute

4、 How to check the execution results of automated scripts ？

Use assertEqual() perhaps assertIn(） To add assertions

5、 How to determine whether it is a script problem or a version problem ？

. Indicates that the use case passes ;

E Indicates a script error ;

F Indicates that the assertion failed ;

6、 How to improve selenium Execution speed of ;

Increase network speed

To use less sleep wait for , Use both explicit and implicit waiting ;

7、 Use that method to determine whether the element is displayed ？

is_displayed() Show

8、css and xpath The difference between ？

The grammar is different ;

css Relatively fast ;

9、 The reason why the automation script failed ？

1、 The test environment is unstable ;

2、 The developer modifies the code without notifying the tester ;

3、 Development introduces new problems ;