Computer Science / Unit 2 CS 0049 short lesson, about 20 seconds
Testing and Debugging
Captions available
The idea
Testing uncovers errors in an algorithm's instructions; debugging identifies where each error lives and fixes it — two named steps, in that order.
In practice
A checkout flow fails on one coupon; the test caught it, the debugging session removes it.
Where people slip
Untested instructions are unverified claims.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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