Section 7: Modern Tooling, Testing & Dynamic Ruby

📄 Lecciones de la Sección

• Lección 1: 7.1 Test-Driven Confidence: Unit Testing with Minitest & RSpec

  Manual QA does not scale as applications grow in complexity. Master automated testing: write unit tests with Ruby's built-in Minitest, practice the Red-Green-Refactor development rhythm, and understand RSpec expectation syntax.

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• Lección 2: 7.2 Dependency Management: Bundler & RubyGems Architecture

  Modern web applications stand on the shoulders of the open-source ecosystem. Master RubyGems and Bundler: configure Gemfile specifications, commit reproducible Gemfile.lock snapshots, and isolate execution with bundle exec.

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• Lección 3: 7.3 Interactive Debugging: Inspecting State with binding.irb

  Stop guessing what code is doing with blind puts statements. Master interactive debugging with binding.irb: pause live thread execution, inspect local bindings, evaluate expressions, and leverage runtime introspection.

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• Lección 4: 7.4 Dynamic Ruby: Metaprogramming & Expressive DSLs

  Understand how Rails delivers its renowned developer ergonomics without magic. Master dynamic dispatch with send, runtime method generation with define_method, and the mechanics behind domain-specific languages.

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