Unit Test Methods

You’ll learn about the unit test methods available in Python in this lesson.

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Introduction to unit test methods

The following are some of the methods available in unittest, most of which are self-explanatory.

  • assertEqual(a, b)

  • assertNotEqual(a, b)

  • assertAlmostEqual(a, b) for floating point numbers

  • assertAlmostEqual(a, b, places)

  • assertTrue(x)

  • assertFalse(x)

  • assertIs(a, b) tests for identity

  • assertIsNot(a, b)

  • assertIsNone(x)

  • assertIsNotNone(x)

  • assertIn(a, b)

  • assertNotIn(a, b)

  • assertIsInstance(a, b)

  • assertNotInstance(a, b)

  • assertRaises(exception, function, arguments)

All calls to these methods must be prefixed with self..

Each of these methods has an optional final parameter, which may be any expression. The final parameter is used as a message in the AssertionError to provide any necessary additional information.

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