What is the key behavior of a spy?
Practice this question from Quiz: JUnit and Mockito, with options and an explanation.
Question
What is the key behavior of a spy?
Option A — Correct answer
It wraps a real object and unstubbed methods call real behavior
Spies are partial test doubles around real instances.
Option B
It cannot call real methods
Option C
It creates SQL indexes
Option D
It only works on interfaces