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TDD and Test-First Development Principle
publish date: 2026/06/18 05:45:8.141608 UTC
Complete the key principle of TDD: "You don't start working on the next (1) until the code that you have developed passes all of its (2)."
Please drag and drop the selected option in the right place or type it instead
increment
tests
sprint
reviews
Correct Answer
(1) increment
(2) tests
Explanation
The core rule of TDD is: you don't start working on the next increment until the code you have developed passes all of its tests. This ensures that the codebase is always in a working state and prevents defects from accumulating across increments.
Reference
Software Engineering, Ian Sommerville, 10th edition