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Source Map Tests

This repository holds testing discussions and tests for the the Source Map debugging format. Specifically, we're looking to encourage discussion around:

  • Manual and automated testing strategies for Source Maps
  • Gathering a list of Soure Map generators and consumers
  • General discussion around deviations between source maps

Open discussion happens in the GitHub issues.

Source Map spec:

Test cases

This repo also contains cross-implementation test cases that can be run in test suites for source map implementations, including browser devtool and library test suites.

Running the tests

Tools

Source map validator:

  • The tests are included in the validator test suite here. You can run them with npm test.

Browsers

The tests for Firefox are in the Mozilla source-map library:

  • The upstream repo has a test file for running the spec tests from this repo. They can be run with npm test.

How to run in WebKit:

  • Check out WebKit
  • cd to the checked out WebKit directory.
  • Run git am <this-repo>/webkit/0001-Add-harness-for-source-maps-spec-tests.patch
  • Run Tools/Scripts/build-webkit (depending on the platform you may need to pass --gtk or other flags)
  • Run Tools/Scripts/run-webkit-tests LayoutTests/inspector/model/source-map-spec.html (again, you may need --gtk on Linux)

How to run in Chrome Devtools:

  1. Setup:
    • Install depot_tools following this depot_tools guide
    • Check out Chrome Devtools:
    • Run gclient config https://chromium.googlesource.com/devtools/devtools-frontend --unmanaged
    • Run cd devtools-frontend
    • Run gclient sync
    • Run gn gen out/Default
  2. Build:
    • Run autoninja -C out/Default
  3. Test:
    • Run npm run auto-unittest
  4. Apply patches from this repo:
    • Run git apply <path to .patch file> in devtools-frontend repo

More information about running Chrome Devtools without building Chromium can be found here

Node.js

Follow the running Node.js tests guide to build Node.js and run tests locally. Read more about running the source map tests at here.