The plain-English version
Code checking behavior or properties.
Why it matters
Tests provide evidence about their coverage, not proof that every bug is absent.
Let’s make it click
A test verifies that an empty title displays an error and creates no task.
Vibe Bro’s heads-up
A passing test supports the scenario it checks; untested paths can still fail.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: Read the full explanation, examples, and pitfalls; no material factual error identified. References are supporting reading, not a sentence-by-sentence source concordance.