test262/guides/Getting-Started.md

Getting Started With Test262

Rough outline...

• Why do we test?
• What do we test?
  • Similar to https://github.com/tc39/test262/blob/main/CONTRIBUTING.md#acceptable-tests and https://github.com/tc39/test262/blob/main/CONTRIBUTING.md#unacceptable-tests
• Anatomy of a test
  • frontmatter
    • esid
    • description
    • don't mention any other frontmatter
  • test code
    • assert api
• Let's write a test, end to end.
  • Pre-work
    • Find something that needs to be tested
    • Read spec
    • Create test plan
      • This can be a super minimal version of the usual test plans, but will help to show how we work
        • Write a checklist (we'll give a 2-3 point example to work from)
          • Examples:
            • https://github.com/tc39/test262/issues/2511
            • https://github.com/tc39/test262/issues/1237
      • Does it need a new feature tag?
    • Share test plan
  • Writing our first test
    • Git stuff
      • Pull test272 repo
      • Create a branch
      • What else?
    • Create a new file
      • Where? Why?
      • What do I name it? Why?
    • Copyright
      • Link to https://github.com/tc39/test262/blob/main/CONTRIBUTING.md#copyright
      • Give example
    • Frontmatter
      • What goes here? Why?
        • Link to https://github.com/tc39/test262/blob/main/CONTRIBUTING.md#copyright
        • Always required
          • esid
            • Show examples
          • description
            • Show examples
        • Always required for async tests
          • flags: [async]
            • Link to examples
        • Always required for module tests
          • flags: [module]
            • Link to examples
        • Always required for stage 3 features
          • features: [...]
            • Link to examples
        • Always required if tests need additional test helper functionality
          • includes: [...]
            • Link to examples
        • Always required for syntax tests that are intentionally expected to fail (More on this in a follow up guide)
          • negative
            • Give examples
        • Helpful to have
          • info
            • Give examples
            • Link to examples
    • Body
      • Show examples "good", "better", "best"
• Run our test
  • Links to Running-Tests.md
  • Shows minimal run example, ie. "If we've already read Running-Tests.md and set up a test running environment, go ahead and execute this command..."
• What else could be tested?
• Commit code
• Push branch
• Open PR
• Ask for review
  • Who?
    • We need a list of people that will likely respond