White-box testing techniques in Software Engineering - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is white-box testing?

White-box testing is a software testing method where the tester has full knowledge of the internal structure, design, and implementation of the software being tested.

intermediate

Name a common white-box testing technique that checks every possible path through the code.

Path testing is a white-box technique that aims to execute all possible paths in the program to find errors in the logic or flow.

beginner

What does statement coverage measure in white-box testing?

Statement coverage measures the percentage of executable statements in the code that have been executed by the test cases.

intermediate

Explain branch coverage in white-box testing.

Branch coverage ensures that each possible branch (true/false) from every decision point in the code is executed at least once during testing.

beginner

Why is white-box testing important in software development?

White-box testing helps find hidden errors, improves code quality, verifies internal operations, and ensures that all parts of the code work as expected.

Which of the following is a white-box testing technique?

A Statement coverage

B Usability testing

C Black-box testing

D Beta testing

Statement coverage is a white-box testing technique that measures how many statements are executed.

What does branch coverage test in white-box testing?

A Each decision point's true and false outcomes

B All possible paths through the code

C User interface elements

D Performance under load

Branch coverage ensures that both true and false branches of each decision are tested.

Which is NOT a goal of white-box testing?

A Check internal code logic

B Test software without knowing code

C Find hidden errors

D Improve code quality

Testing without knowing the code is black-box testing, not white-box testing.

Path testing aims to:

A Test only the user interface

B Test software performance

C Check database connections

D Execute all possible paths in the code

Path testing tries to cover every possible route through the program's code.

Which coverage type measures the percentage of executed statements?

A Branch coverage

B Path coverage

C Statement coverage

D Function coverage

Statement coverage measures how many statements have been run during testing.

Describe the main white-box testing techniques and what each aims to achieve.

Think about how testers check code lines, decisions, and paths.

Explain why white-box testing is important and how it differs from black-box testing.

Consider what testers know about the software in each method.