State transition testing in Testing Fundamentals - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is state transition testing?

State transition testing is a technique where tests are designed to check how a system moves from one state to another based on events or inputs.

beginner

Why is state transition testing useful?

It helps find errors in how a system changes states, especially when the system behavior depends on previous actions or conditions.

intermediate

Name the main parts of a state transition diagram.

States (conditions of the system), transitions (moves between states), events (triggers causing transitions), and actions (outputs or changes caused by transitions).

intermediate

How do you create test cases from a state transition diagram?

Identify all states and transitions, then design tests that cover each transition and possible sequences of transitions.

beginner

Give a real-life example of state transition testing.

Testing a traffic light system: states are red, green, yellow; events are timer changes; tests check if the light changes correctly from red to green, green to yellow, and so on.

What triggers a state change in state transition testing?

A An event or input

B A random guess

C A system crash

D User interface color

State changes happen because of events or inputs that cause the system to move from one state to another.

Which of these is NOT part of a state transition diagram?

A States

B Database tables

C Events

D Transitions

Database tables are not part of a state transition diagram; it focuses on states, transitions, and events.

State transition testing is especially useful for testing systems that:

A Depend on previous states

B Are static and never change

C Only perform calculations

D Have many user interfaces

It is useful when system behavior depends on previous states or actions.

In state transition testing, a 'transition' is:

A A user input form

B A system error

C A move from one state to another

D A test report

A transition is the move from one state to another triggered by an event.

Which test case would be part of state transition testing for a login system?

A Testing database backup

B Checking page layout

C Measuring response time

D Entering a wrong password and checking error message

Entering a wrong password causes a state change (from logged out to error state), which is tested in state transition testing.

Explain what state transition testing is and why it is important.

Think about systems that behave differently based on previous actions.

Describe how you would design test cases using a state transition diagram.

Imagine drawing a map of system states and planning tests to cover all paths.