State transition testing-software_testing
- 2. Introduction: State Transition testing, a black box testing technique, in which outputs are triggered by changes to the input conditions or changes to 'state' of the system. In other words, tests are designed to execute valid and invalid state transitions. A dynamic testing technique, which is used when the system is defined in terms of a finite number of states and the transitions between the states are governed by the rules of the system. This technique is used when features of a system are represented as states which transform to another state. The transformations are determined by the rules of the software.
- 4. Deals With: Sequence of Events Handling of Events depending on Events and Conditions that occurred in the past
- 8. Example: You visit an ATM and withdraw $1000. You get your cash. Now you run out of balance and make exactly the same request of withdrawing $1000. This time ATM refuses to give you the money because of insufficient balance.
- 9. So here the transition, which caused the change in state is the earlier withdrawal:
- 10. Steps: Identify the initial states and their final state based on the lines/arrows that are coming out of the initial state For each initial state, find out the input condition and the output result Mark each set as a separate test case.
- 11. State Transition Testing Example in Software testing: In the practical scenario, testers are normally given the state transition diagrams and we are required to interpret it. These diagrams are either given by the Business Analysts or a stakeholder and we use these diagrams to determine our test cases. For An Example Click here.
- 12. Conclusion: State Transition testing is a unique test approach for testing complex applications, which would increase test execution productivity without compromising on test coverage.