The final block shows a simple way to run the tests.

They are covered in more detail in the section Organizing test code. To define instructions that will be executed before and after each test method. The setUp() and tearDown() methods allow you These methods are used instead of theĪssert statement so the test runner can accumulate all test results To verify a condition or assertRaises() to verify that a The crux of each test is a call to assertEqual() to check for anĮxpected result assertTrue() or assertFalse() This naming convention informs the test runner about which methods Individual tests are defined with methods whose names start with the letters main ()Ī testcase is created by subclassing unittest.TestCase. split ( 2 ) if _name_ = '_main_' : unittest. split (), ) # check that s.split fails when the separator is not a string with self. isupper ()) def test_split ( self ): s = 'hello world' self. upper (), 'FOO' ) def test_isupper ( self ): self. TestCase ): def test_upper ( self ): self. Import unittest class TestStringMethods ( unittest. Here is a short script to test three string methods: This section demonstrates that a small subset of the tools The unittest module provides a rich set of tools for constructing and Recommended that tests be driven by a continuous integration system such as This is intended largely for ease of useįor those new to unit testing. The script Tools/unittestgui/unittestgui.py in the Python source distribution isĪ GUI tool for test discovery and execution. Testing in Python Mailing ListĪ special-interest-group for discussion of testing, and testing tools, The Python Testing Tools TaxonomyĪn extensive list of Python testing tools including functional testingįrameworks and mock object libraries. Third-party unittest framework with a lighter-weight syntax for writing Kent Beck’s original paper on testing frameworks using the pattern shared The runner may use a graphical interface,Ī textual interface, or return a special value to indicate the results ofĪnother test-support module with a very different flavor. test runnerĪ test runner is a component which orchestrates the execution of testsĪnd provides the outcome to the user. Used to aggregate tests that should be executed together. test suiteĪ test suite is a collection of test cases, test suites, or both. TestCase, which may be used to create new test cases. This may involve, for example,Ĭreating temporary or proxy databases, directories, or starting a serverĪ test case is the individual unit of testing. Tests, and any associated cleanup actions. To achieve this, unittest supports some important concepts in anĪ test fixture represents the preparation needed to perform one or more It supports test automation, sharing of setup and shutdown codeįor tests, aggregation of tests into collections, and independence of the The unittest unit testing framework was originally inspired by JUnitĪnd has a similar flavor as major unit testing frameworks in other (If you are already familiar with the basic concepts of testing, you might want

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