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Testing Your Code with VS Code

The Easy Way: Test Explorer 🧪

VS Code has a built-in Test Explorer that makes running tests super easy!

How to Use It

  1. Find the Test Explorer icon in the left sidebar (it looks like a flask/beaker 🧪)

    • Or use the keyboard shortcut: Ctrl+Shift+T (Windows/Linux) or Cmd+Shift+T (Mac)

  2. See all your tests organized by set:

    📁 course
  📁 set1
    ✓ test_set1_exercise1.py
    ✓ test_set1_git_setup.py
  📁 set2
    ✓ test_set2_exercise0.py
    ✓ test_set2_exercise2.py
  ...

  3. Run tests - Click the play button (▶) next to:

    • A single test to run just that one test
    • A test file to run all tests in that file
    • A set folder to run all tests for that week
    • The top-level folder to run ALL tests

  4. See results inline:

    • ✅ Green checkmark = test passed
    • ❌ Red X = test failed
    • Click on a failed test to see why it failed

  5. Debug tests - Click the debug icon (🐛) next to any test to run it with breakpoints

Tips

  • Tests automatically refresh when you save your code
  • You can run tests while editing - no need to switch to the terminal
  • Failed tests show you exactly what went wrong
  • Green checkmarks are very satisfying! 🎉

The Command Line Way

If you prefer the terminal (or the Test Explorer isn't working):

# Run all tests for a specific set
pytest ../course/set1/

# Run a specific test file
pytest ../course/set2/test_set2_exercise0.py

# Run with more detail
pytest ../course/set1/ -v

# Stop at the first failure
pytest ../course/set1/ -x

Need Help?

  • If tests aren't showing up, try: Developer: Reload Window from the Command Palette (Ctrl+Shift+P)
  • Make sure you've opened the me folder as your workspace (not the parent folder)
  • Check that the Python extension is installed and active

Happy testing! 🚀