First,Try to intervene as soon as possible
Why should the test intervene as soon as possible?
The simple thing is to ensure the quality of the software and reduce the cost.Testing personnel are generally involved in the demand phase,The object of the test is demand.The purpose of software testing is to ensure quality, prevent risk and reduce costs.The cost includes the repair cost of the defect,One of the characteristics of the defect is that the sooner discovered the defect, the lower the repair cost.This is why the test should be involved as soon as possible,It is to be able to find the defects of demand and design in the demand phase and reduce the cost of repair later.
Second,It's impossible to end the test
Now the scale of the software is growing, the complexity is getting higher and higher, it is completely impossible to do a complete test.In the test phase, the software tester can focus on the test and the high-intensity test based on the risk and priority, thus ensuring the quality of the software.
Third,The test shows that the software is defective
Software testing can only prove that there are defects in the software, but it does not prove that there is no defect in the software, which can only reduce the possibility of software defects.
If the company's decision-makers want to pass software testing to prove that there is no defect in the software, it is not feasible.The test personnel can only prove that there is a defect in the software, but it does not prove that there is no defect in the software, the software is perfect.
Software test personnel can find out most of the defects in the software by software testing activities to avoid the loss of the software on the line.
Fourth,Defect cluster(2/8 principles)
All things in the world are in accordance with the principle of 2,Such as the famous wealth theory:twenty percent of the world's people master the wealth of the world.
Software testing also conforms to the Net interest margin principle:
1. Function:20% of a software is the main function, it will spend 80% of software testing personnel.
2. Defect:The higher the defect found in a functional module, the higher the defect that exists, and the defect that is found is proportional to the unknown defect.
Fifth,The pesticide paradox
As long as the test personnel who have done software testing will find an interesting phenomenon:
On the day of the development of the test, the tester is a bug to pick up a bug, but with the progress of the test progress, every day found that the defects will be less and less.At the end of the day, it is impossible to find the defect.But can you say that there is no defect in this software?I believe that the test personnel do not have the confidence to ensure that their testing software does not have a bug, then why there is no defect in existence, and the test personnel is not found?
This is because the test personnel are immune to the defect, even if a bug is placed in front of the test personnel, the test personnel are not sure to find.It's like the pests are immune to pesticides, and they can't kill them.
How should that solve the problem?
There is a solution:
1. Internal test personnel cross test.
2. The test case is often updated, and the test case is modified according to the characteristics of the software.
3. Constantly changing the test method, do not use a single test method to test the software, according to the software content using different testing methods, test methods.
According to the above three methods, we find more defects, guarantee the quality of the software and reduce the risk.
Sixth,The test activity depends on the test content
In the interview process, sometimes the interviewer will meet the interviewer, "do software testing what is the most important," the test of the "demand" is the most important, for the test staff is the demand.It's business for the company.
According to the different business, the software testing is also divided into different industries, such as game industry, financial industry, electrical industry and so on.Different industries, testing activities are different, such as the choice of tools, the test process is not the same, so the software testing activities rely on the content of the test.
Seventh,No fault isn’t good is false
No fault, it is impossible for a software tester.
Assuming that a software has no bug, perfect, but does not meet the needs of the user, it can be said that the software is OK?So to judge the good and bad of a software, mainly based on the user needs, whether to achieve the desired results.