Shulou(Shulou.com)06/02 Report--

Today, the editor will share with you the relevant knowledge points about the advantages and disadvantages of black-box testing and white-box testing. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge. So share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.

1. Briefly describe the advantages and disadvantages of black box testing and white box testing.

The advantages of black box testing are:

(1) it is relatively simple and does not need to know the internal code and implementation of the program.

(2) it has nothing to do with the internal implementation of the software

(3) from the user's point of view, it is easy to know what functions users will use and what problems they will encounter.

(4) based on the software development documentation, you can also know which functions the software implements in the documentation.

(5) it is convenient to do software automatic testing.

The disadvantages of black box testing are:

(1) it is impossible to cover all the code, and the coverage rate is low, which can only reach 30% of the total code.

(2) the reusability of automated testing is low.

The advantages of white-box testing are:

Help software testers to increase code coverage, improve code quality, and find problems hidden in modern code.

The disadvantages of white-box testing are:

There are many different paths for the program to run, and it is impossible to test all the running paths; the test is based on code and can only test whether the developer is doing the right thing, but not knowing whether the design is correct or not, and some functional requirements may be omitted; when the system is huge, the testing overhead will be very high.

2. What are the common testing methods for black-box testing and white-box testing, for example?

The black box has equivalent class division method, boundary analysis method, causality diagram method and error guess method. The white box has logical coverage method, circular test path selection, and basic path testing.

Example: in an integrity query that enters more than one condition at a time. By using the equivalent class division method and the boundary analysis rule, we can first use the equivalent class division method to identify one or more test cases whose results are OK, then confirm multiple test cases of NG, and then use the boundary value analysis method to expand and supplement the test cases whose results are OK and NG.

3. Is it possible to design black box testing without product specifications and requirements documents?

Yes, you can replace the product specification and requirements documents through other work content, and organize the test requirements traceability table according to the customer's function points. According to the developers' Software Specification List finishing function test points, carry out the project inter-departmental discussion, mainly sort out the understanding and understanding of the function points, and the testers sort out the use case requirements and submit them to the project team or the use cases within the product project. Email the customer representative to confirm some of the controversial issues, the Demo of the project and part of the developed system, referring to the testing of cross-modules between similar products of the same industry and competitors to consult customers or stakeholders.

4. What are the coverage standards for white-box testing logic, and what is the highest coverage rate?

Statement coverage, branch coverage, conditional coverage, path coverage, branch conditional coverage, the highest coverage is path coverage.

These are all the contents of the article "what are the advantages and disadvantages of black-box testing and white-box testing in software testing". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.