JUnit was written on a plane
Did you know JUnit was written on a transatlantic flight?
· Kent Beck · Martin Fowler · 21-sec read
In 1997 Kent Beck and Erich Gamma flew from Zurich to the OOPSLA conference in Atlanta and spent the flight pair-programming the first version of JUnit, test-first. Martin Fowler heard about it, demanded a copy and became one of the first alpha users. JUnit also gave developers the red/green bar, and ports followed for nearly every language.
Why it matters
Small, simple tools spread ideas: JUnit carried test-driven development into the mainstream.
Sources
High confidenceChecked October 20, 2026.
- Xunit (Martin Fowler's bliki) martinfowler.com
- Erich Gamma: A pattern of success (ZDNET) zdnet.com