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What is a Test?

A Test, "Unit Test," or TestMethod is the basic element of the entire FlexUnit framework. Simply put, it is a method meant to verify the expected behavior of a very narrow use case of a class, a global method, or any bit of isolatable code, providing a simple pass/fail result. In its most basic form, it is made up of two parts:

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• Global variables that will be used in most or all tests (ex: components you're testing against)
• Additional FlexUnit 4.x functionality that applies across multiple tests (Note: These include advanced features beyond the purview of this section), like:
  :-Before/After
  :-BeforeClass/AfterClass
  :-Rules
• Specifying a custom runner to use for the tests

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