What is software testing and the purpose of software testing?

Software testing refers to the process of operating a program under specified conditions to find program errors, measure software quality, and evaluate whether it can meet the design requirements. Its main purposes are as follows:

1. Discover the difference between the tested object and the user's needs, that is, defects.

2. Find and solve defects through testing activities, and increase people's confidence in software quality.

3. Understand the quality of the tested object through testing activities, and provide data basis for decision-making.

4. Accumulate experience through testing activities to prevent defects and reduce the risk of product failure.

Extended information:

Principles of software testing:

1. Testing should be carried out as early as possible, and it is best to intervene at the demand stage, because the most serious mistake is that the system cannot meet the needs of users.

2. Programmers should avoid checking their own programs, and the third party should be responsible for software testing.

3. Legal and illegal inputs and various boundary conditions should be taken into account when designing test cases, and extreme and unexpected states should be created under special circumstances, such as abnormal network interruption and power failure.

4. We should pay full attention to the clustering phenomenon in the test.

5. There is a confirmation process for the wrong result. Generally, errors tested by A must be confirmed by B. Serious mistakes can be discussed and analyzed at a review meeting, and the test results should be strictly confirmed, whether the problem really exists and the severity.

6. Make a strict test plan. Be sure to make a test plan and be instructive. The test schedule should be as loose as possible, and you don't want to complete a high-level test in a very short time.

7. properly save the test plan, test cases, error statistics and final analysis report to facilitate maintenance.

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