Design test cases to verify a computer program : Testing Classes

The video tutorial covers testing a printer class in Python. It begins with setting up a test case and writing the first test to check the printer's capacity and speed. The instructor explains the importance of using a float for pages per second and discusses different ways to validate test results. The video then delves into the setup method, emphasizing the need for a new printer object for each test to avoid state issues. It concludes with a discussion on setup class and teardown methods, advising against sharing objects across tests to maintain test integrity.

What is the primary purpose of writing a test for the printer class?

• To check if the printer can print in color

• To ensure the printer can print more pages than its capacity

• To test the printer's ability to connect to Wi-Fi

• To verify the printer's functionality within its specified capacity

Why is it recommended to use a setup method in testing?

• To allow tests to run in parallel

• To reduce code duplication and ensure each test has a fresh printer object

• To make the tests more complex

• To increase the speed of the tests

What is the difference between setup and setup class methods?

• There is no difference; they are interchangeable

• Setup class runs once for all tests, while setup runs before each test

• Setup runs once for all tests, while setup class runs before each test

• Both run before each test but setup class is faster

Why should you avoid sharing a printer object across tests?

• It can lead to tests passing unexpectedly

• It can cause tests to fail due to shared state changes

• It makes the tests run slower

• It is not supported in Python

What is the purpose of teardown methods in testing?

• To set up the test environment

• To clean up after each test

• To increase test coverage

• To run tests in a specific order