Black box test - decision table method of test cases

One 、 Application scenarios

In some data processing problems , When there are too many combinations of logical condition values , The decision table is a good choice ！

Two 、 Decision table method definition

The decision table usually consists of four parts , as follows :
They mean ：

Condition stake : List all the conditions of the problem

Condition item : List the values of conditional piles in the left column （ True or false ）

Action post : List problems and specify possible actions to be taken

Action items : List the actions to be taken under the corresponding condition item combination .

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3、 ... and 、 step

1. List all conditions and actions
   （ How to determine the number of rules ？ Join a n Conditions , Each condition has two values （0,1）, There are 2^{n Rules in}

2. Generate decision table

3. Simplify the decision table （ Merge similar rules , Same action ）

4. Get the test case

Four 、 actual combat — case analysis

If required “ For power greater than 50 A horsepower machine or （ The maintenance record is incomplete and has been operated 10 Machines more than 10 years old ）, Priority should be given to maintenance ”, Please give the decision table .

1. List all conditions and actions

This can be done on the draft （ Omission ）

2. Generate decision table
   
3. Simplify the decision table （ Merge similar rules , Same action ）
   

Be careful ：“——” Can be really It can also be for false .
4. Get the test case

The main points of the decision table method are basically here , ha-ha , It is mainly practical understanding .

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