DAW9: Advanced TDD with Pytest

In this video, we use patch.object to test that other methods in the class are called while keeping the test scoped to a single unit - true unit tests!

We also continue to apply Test Driven Development (TDD) to create our ResourceManager class, which will serve as a great foundation for the application when it’s complete.

Timestamps

• 0:00 Lessons Learned
• 0:54 Merging PR #10 from LTstrange
• 1:44 Figuring out next steps
• 2:11 Starting get_song
• 2:21 Implementing check_types and refactor
• 3:38 Implementing get_song
• 3:52 Adding patch.object
• 4:16 WARNING! False test pass with called_with method
• 5:11 Changing the Song class
• 5:36 Getting fancy with assert_has_calls
• 6:08 Implementing get_pattern
• 6:10 TIP! Argument order for patch decorators
• 6:43 Finishing up get_song
• 7:09 Reordering methods in both files
• 8:06 Implementing get_instrument
• 8:17 Implementing get_pattern
• 8:36 Implementing get_note