Introductory Tutorial on Unit Testing Python Functions with Pytest, Visual Studio Code, Command-line

0:00 The BIG IDEA of automated testing: write code to test other code 4:50 Example of setting up a skeleton function for test-driven development 6:36 Developing expected use cases and edge cases 7:38 Setting up a pytest Test Module with a Python file ending in a _test.py suffix 9:56 Setting up test functions in pytest with functions whose names begin with test_ 10:30 Using the assert keyword to confirm some boolean truth or fail a test otherwise 12:04 Running pytest from the Command-Line Interface as a Python3 module 13:47 Reading the output of a failed test in pytest's command-line output 17:23 Correctly implementing the total function to pass tests 19:25 Adding an additional test to verify an additional use case of total function 20:45 Using VSCode's Python extension to run tests directly in VSCode's interface 22:43 How-to fix the "Test discovery error, please check the configuration settings" error in VSCode's Pytest runner 26:30 How to follow Test-driven Development best practices when writing pytest function tests 28:57 Tutorial of test-driven development for a single function in pytest: a join function 34:10 Establishing a skeleton function for join function test-driven case study 35:33 Adding test cases for some use cases and edge cases of join 41:02 Correctly implementing the join function 47:58 Testing is no substitute for critical thinking! How to write tests with good code coverage. To install pytest with Python3, substitute PYTHON with your : PYTHON -m pip install pytest