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Programming / Learning path

Programming with tests

Start with a reference sample, write assertions and investigate a failure.

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  1. Step 1

    Inspect source-backed snippets

    Read concrete checks and implementation limitations.

    Open resource →
  2. Step 2

    Run your own assertions

    Modify safe JavaScript examples in the browser.

    Open resource →
  3. Step 3

    Review coding challenges

    Practice reasoning about failure paths.

    Open resource →

Progress is manually marked and stored only in this browser. Linked challenge quizzes keep their own separate progress.