COR[R]ECT: [R]eference

Learn about the importance of using references in writing unit tests.

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When testing a method, consider:

  • What does it reference outside of its scope?
  • What external dependencies does it have?
  • Does it depend on the object being in a certain state?
  • Are there any other conditions that must exist?

A web app that displays a customer’s account history might require the customer to be logged on. The pop() method for a stack requires a non-empty stack. Shifting a car’s transmission from Drive to Park requires that its first stop.

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