What does a software testing engineer do?

Software Testing Engineer refers to understanding the functional requirements of the product and testing them, checking whether the software has defects (Bugs), and testing whether the software has stability (Robustness), security, ease of operation, etc. Performance, dedicated staff who write corresponding test specifications and test cases.

Software testing engineers play the role of "quality management", discovering software problems in a timely manner and urging corrections in a timely manner to ensure the normal operation of the product. Simply put, they are the quality inspectors and guarantors in the software development process, responsible for checking software quality.

The specific work of a software testing engineer is:

1. Use various testing techniques and methods to test and discover software defects in the software. Testing technology is mainly divided into two categories: black box testing and white box testing. Among them, black box testing techniques mainly include equivalence class division method, boundary value method, cause and effect diagram method, state diagram method, test outline method and various typical software fault models, etc.; white box testing main techniques include statement coverage and branch coverage. , decision coverage, basic path coverage, etc.;

2. Testing work needs to run through the entire software development life cycle. Complete software testing includes unit testing, integration testing, validation testing and system testing. Unit testing work is mainly completed during the coding phase, and is completed jointly by developers and software testing engineers. The main basis is detailed testing. The main task of integration testing is to test whether the interfaces between software modules are implemented correctly, based on the software architecture design. Confirmation testing and system testing are to verify the consistency of the software's functions and requirements after the software development is completed, and to verify whether the system functions of the software under corresponding hardware conditions meet user needs. The main basis is user needs.

3. Testers compile the discovered defects into a formal defect report and submit it to developers for confirmation and repair of defects. The most important requirement for writing a defect report is to ensure that the defect can be reproduced. Testers are required to have good writing skills and language organization skills.

4. Testers need to analyze software quality. After the test is completed, testers need to analyze the software quality based on the test results, including defect rate, defect distribution, defect repair trends, etc. Specific measures of various quality characteristics of software are given, including functionality, reliability, ease of use, security, time and resource characteristics, etc. Finally, a conclusion is given as to whether the software can be released or submitted for use by users.

5. During the testing process, in order to better organize and implement the testing work, the testing leader needs to formulate a testing plan, including testing resources, testing progress, testing strategies, testing methods, testing tools, testing risks, etc. .

6. In order to conduct testing better and more effectively and ensure the quality of testing work, testers need to first design test cases and form a test case report before performing testing work. Designing test cases is the core work to ensure test quality, and many testing techniques can be used to guide the design of test cases. In order to improve the efficiency of test case design, BTEST training courses have specially opened a course on efficient test case design to teach various design use case technologies and methods.

7. In order to improve work efficiency or improve testing level, testing work needs to introduce automated testing tools. Testers need to learn to use automated testing tools, write test scripts, conduct performance testing, etc.

8. During the testing work, the person in charge of testing also needs to continuously improve the testing process according to the actual situation, improve the testing level, and build the testing team.

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