List of articles

Day01   Summary of software testing Basics

Day02 Summary of test case knowledge points （ On ）

Day03 Summary of test case knowledge points （ Next ）

One 、 Scene method

1. Definition

        Business process described by scenario ( Business logic ), It also includes code implementation logic , Design use cases to traverse scenarios , Verify the correctness of software system functions  

2. Using scene method

2.1: Draw a flow chart -- Product requirements document

         In most cases, the needs are drawn ; Or you need to test your own painting --wps,office-visio, On-line processon

         rectangular ： Show steps （ operation , Input , Output results ）
         The diamond ： Judge the condition -- yes , no
         arrow ： flow

        
2.2: Traverse the scene , Extract test cases

        1） Overwrite normal path -- Smoke testing
        2） Take every branch -- Find a diamond -- Paths not covered in normal scenarios , Branch
        3） The error step returns to the main process , It is suggested to take more steps

         Be careful ： The focus of scenario method is testing process , So one use case verification for each process is enough , No problem in the process test does not mean that there is no problem in the system function , You also need to test the function of single step ,--- Input item
         Only a single function point and process test , It's a full test + Equivalence class , The boundary value ----- Refine the test

Two 、 Wrong guess （ The reverse method ）

         Wrong guess ： Infer various errors that may exist in the program according to experience or intuition , So as to write a black box test method to check these wrong test cases .
         It has three elements ： Experience , knowledge , intuition --- Exploratory testing
         Consider the error scenarios that the program might trigger --- Not working properly

         Use scenarios ：( The consideration may not be complete ) Not used alone --- It can be used as a supplement to other methods

3、 ... and 、 Cause and effect diagram

         Cause and effect diagram It is more suitable for the situation with more transmission conditions , Test the permutation of all input conditions . The so-called reason is input , The result is the output .

Four 、 Decision table method

        The decision table method is combined with the cause and effect diagram method

summary

         Only the scene method is mainly used 、 Equivalence class partition method and boundary value analysis method , Others are not often used , Special conditions and scenarios are required .

         Scene method --- Business process sorting , Core business logic scenario ;
         Equivalence classes and boundary values --- Detailed analysis ;
         The error inference method is applied to the final use case under the error scenario