Python UNIT Testing

UNIT Testing

It is the processing of testing whether a particular unit is working properly or not is called unit testing

Test Scenario vs Test Case vs Test Suite

Test Scenario consists of multiple test case for single scenario

So there will be different scenarios consists of test cases for a given application example of one scenario is testing login functionality.

Test Suite is something like grouping of test cases and executing them at a time

Implementing Python Unit testing

We will use Python in-built module unittest

We will use TestCase class to implement

We also use 3 instance methods setUp(), test(), tearDown()

Here is the simple test class

Output of above code is

Here we need to be careful that setUp and tearDown method names are fixed but we can change the test method name as we like bit it need to be prefix with "test" example test_sample(), test1().

We can include as many test methods we want into the class

Note

For every test method setUp(),tearDown() methods will be executed.

To avoid this repeated call of setUp and tearDown methods we can use setUpClass(), tearDownClass() methods, now only one time setup and teardown methods are called regardless of how many number of testcases.