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Last active July 28, 2020 23:51
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edge-testing.md

say we claim support for >=1, <3

  • 1.0 is the first supported version.
    • if this isn't tested, features from later versions may be depended on that break compatibility with this version.
  • 1.x adds to it.
    • test the latest version available to detect new features that collide (e.g. variables named async are fine in python 3.6 but async becomes a keyword in python 3.7).
      • only the latest version needs to be tested because features cannot be removed without a major version bump.
    • if something breaks, either
      • a new feature collided with existing code
      • upstream did not follow semver and broke compatibility
      • existing code uses upstream code that is not part of the public API
  • 2.0 can break compatibility, so treat it like 1.0.
  • 2.x should be tested for the same reason as 1.x.

Overall, we test 4 versions (~=1.0.0, ~=1.0, ~=2.0.0, and ~=2.0) no matter how many 1.x or 2.x releases there are.

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