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This article mainly explains "what is the application of unittest in Django". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the application of unittest in Django".

About assertions

It is used to judge a definite result and a predicted result. If the result is correct, there is no return effect, if the result is wrong, an AssertionError exception is thrown, and if followed by msg, the msg content is returned.

Assert 2 = = 2assert 2 = = 1 * 2assert 2 + 0 = = 1 * wrong'''unittest-none of the above returns: assert 1 > 3, 'wrong''''Traceback (most recent call last): File "Dlaxople of 3 courses / day22/ class .py", line 259, in assert 1 > 3,' wrong'AssertionError: wrong'''unittest module attributes describe the attributes of unittest

Unittest.main (): use it to easily turn a unit test module into a test script that can be run directly. The main () method uses the TestLoader class to search for all test methods contained in the module that start with the name "test" and execute them automatically. The default order of the execution method is: load the test cases according to the order of the ASCII code, and the order of numbers and letters is: 0-9. So test case methods that start with A will be executed first and will be executed later with a.

Unittest.TestSuite (): the TestSuite () class of the unittest framework is used to create test suites.

Unittest.TextTextRunner (): the TextTextRunner () class of the unittest framework, which runs the test cases assembled by suite through the run () method under this class. The input parameter is the suite test suite.

Properties of the TestCase class

SetUp (): the method is used for initialization before the test case is executed. If you need to access the database in the test case, you can establish a database connection in setUp and initialize it. If the test case needs to log into web, you can instantiate the browser first.

TearDown (): the method is used to test the aftermath of the case execution. Such as closing the database connection. Close the browser.

Assert* (): some assertion methods that determine whether the final test case passes or not during the execution of the test case by determining whether the actual result of the test is equal to the expected result.

AssertEqual (msg=' b, [message printed when a test fails']): asserts whether an and b are equal, and the test case passes if they are equal.

AssertNotEqual (msg=' b, [message printed when a test fails']): asserts whether an and b are equal, and if not, the test case passes.

AssertTrue (x, [printed message'] when the msg=' test fails): asserts whether x is True, and if it is True, the test case passes.

AssertFalse (x, [printed message'] when the msg=' test fails): asserts whether x is False, and if it is False, the test case passes.

AssertIs (msg=' b, [message printed when a test fails']): asserts whether an is b, and the test case passes.

AssertNotIs (msg=' b, [message printed when a test fails']): asserts whether an is b, and if not, the test case passes.

AssertIsNone (x, [printed message'] when the msg=' test fails): asserts whether x is None, and if it is None, the test case passes.

AssertIsNotNone (x, [printed message'] when the msg=' test fails): asserts whether x is None, and if it is not None, the test case passes.

AssertIn (msg=' b, [message printed when a test fails']): asserts whether an is in b, and in b the test case passes.

AssertNotIn (msg=' b, [message printed when a test fails']): asserts whether an is in b, and if not, the test case passes.

AssertIsInstance (msg=' b, [message printed when a test fails']): asserts that an is an instance of b and that the test case passes.

AssertNotIsInstance (msg=' b, [message printed when a test fails']): asserts that an is an instance of b, and if not, the test case passes.

Properties of TextTextRunner

Run (): is the test case that runs the test suite. The input parameter is the suite test suite.

The unittest.TextTestRunner (verbosity=2) .run (suite) unittest framework uses the

Method 1: unittest.main () to start the unit test module

# coding=utf-8import unittest# method 1: unittest.main () to start the unit test module class MyTestCase (unittest.TestCase): def setUp (self): print ('test environment') def test (self): print ('test case') self.assertEquals (4, 2 * 2) self.assertEqual (1, 3 'something was wrong') def tearDown (self): print (' Environmental destruction') if _ _ name__ ='_ _ main__': unittest.main ()

Method 2: add it to the testsuite collection, and then load all the tested objects

# coding=utf-8

Import unittest

Class TestCase (unittest.TestCase): def test1 (self): print ('one') def test2 (self): print (' two') class TestCase1 (unittest.TestCase): def test1 (self): print ('three') def test2 (self): print (' four') if _ name__ = ='_ main__': un1 = unittest.TestLoader (). LoadTestsFromTestCase (TestCase) un2 = unittest.TestLoader () .loadTestsFromTestCase (TestCase1) suite = unittest.TestSuite ([un1) Un2]) unittest.TextTestRunner (verbosity=2) .run (suite) Thank you for your reading The above is the content of "what is the unittest application in Django". After the study of this article, I believe you have a deeper understanding of what the unittest application in Django is, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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