UnitTest Framework - API Python

                                         

test fixture

A test fixture represents the preparation needed to perform one or more tests, and any associate cleanup actions. This may involve, for example, creating temporary or proxy databases, directories, or starting a server process.

test case

A test case is the smallest unit of testing. It checks for a specific response to a particular set of inputs. unittest provides a base class, TestCase, which may be used to create new test cases.

test suite

A test suite is a collection of test cases, test suites, or both. It is used to aggregate tests that should be executed together.

test runner

A test runner is a component which orchestrates the execution of tests and provides the outcome to the user. The runner may use a graphical interface, a textual interface, or return a special value to indicate the results of executing the tests.

import unittest

class CodeVlidation(unittest.TestCase):

    def setUp(self):
        print("Setup the environment")
    def tearDown(self):
        print("cleaning the environment")

    def testcase1(self):
        print("running the test case1")
        self.assertEqual(2,2)
    def testcase2(self):
        print("running the test case2")
        self.assertEqual(2,3)

if __name__ == '__main__':
    unittest.main()

Setup the environment running the test case1 cleaning the environment .Setup the environment running the test case2 cleaning the environment F ====================================================================== FAIL: testcase2 (__main__.CodeVlidation) ---------------------------------------------------------------------- Traceback (most recent call last):   File "UnitTest.py", line 15, in testcase2     self.assertEqual(2,3) AssertionError: 2 != 3 ---------------------------------------------------------------------- Ran 2 tests in 0.003s FAILED (failures=1) (Python3.8) D:\import\UnitTestPython>

TestSuite Class

Test suites are implemented by the TestSuite class. This class allows individual tests and test suites to be aggregated; when the suite is executed, all tests added directly to the suite and in “child” test suites are run.

import unittest class CodeVlidation(unittest.TestCase):     @classmethod     def setUpClass(cls):         print('Executed Before the all the method executed in class')     @classmethod     def tearDownClass(cls):         print('xecuted after the all the method executed in class')     def setUp(self):         print("Setup the environment")     def tearDown(self):         print("cleaning the environment")     def testcase1(self):         print("running the test case1")         self.assertEqual(2,2)     def testcase2(self):         print("running the test case2")         self.assertEqual(2,3) def suite():     suite = unittest.TestSuite()         ##   suite.addTest (CodeVlidation("testcase1"))         ##   suite.addTest (CodeVlidation("testcase2"))     suite.addTest(unittest.makeSuite(CodeVlidation))     return suite if __name__ == '__main__':     runner = unittest.TextTestRunner()     test_suite = suite()     runner.run (test_suite)

Output D:\import\UnitTestPython>python UnitTest.py Executed Before the all the method executed in class Setup the environment running the test case1 cleaning the environment .Setup the environment running the test case2 cleaning the environment Fxecuted after the all the method executed in class ====================================================================== FAIL: testcase2 (__main__.CodeVlidation) ---------------------------------------------------------------------- Traceback (most recent call last):   File "UnitTest.py", line 24, in testcase2     self.assertEqual(2,3) AssertionError: 2 != 3 ---------------------------------------------------------------------- Ran 2 tests in 0.037s FAILED (failures=1) D:\import\UnitTestPython>

TestLoader Class

               

import unittest class CodeVlidation(unittest.TestCase):     @classmethod     def setUpClass(cls):         print('Executed Before the all the method executed in class')     @classmethod     def tearDownClass(cls):         print('xecuted after the all the method executed in class')     def setUp(self):         print("Setup the environment")     def tearDown(self):         print("cleaning the environment")     def testcase1(self):         print("running the test case1")         self.assertEqual(2, 2)     def testcase2(self):         print("running the test case2")         self.assertEqual(2, 3) # def suite(): #     suite = unittest.TestSuite() #         ##   suite.addTest (CodeVlidation("testcase1")) #         ##   suite.addTest (CodeVlidation("testcase2")) #     suite.addTest(unittest.makeSuite(CodeVlidation)) #     return suite # # if __name__ == '__main__': #     runner = unittest.TextTestRunner() #     test_suite = suite() #     runner.run (test_suite) if __name__ == '__main__':     testList = [CodeVlidation]     testLoad = unittest.TestLoader()     TestList = []     for testCase in testList:         testSuite = testLoad.loadTestsFromTestCase(testCase)         TestList.append(testSuite)     newSuite = unittest.TestSuite(TestList)     runner = unittest.TextTestRunner()     runner.run(newSuite)

D:\import\UnitTestPython>python UnitTest12345.py Executed Before the all the method executed in class Setup the environment running the test case1 cleaning the environment .Setup the environment running the test case2 cleaning the environment Fxecuted after the all the method executed in class ====================================================================== FAIL: testcase2 (__main__.CodeVlidation) ---------------------------------------------------------------------- Traceback (most recent call last):   File "UnitTest12345.py", line 24, in testcase2     self.assertEqual(2, 3) AssertionError: 2 != 3 ---------------------------------------------------------------------- Ran 2 tests in 0.064s FAILED (failures=1) D:\import\UnitTestPython>