Testing Locally:
asdf plugin-test <plugin-name> <plugin-url> [--asdf-tool-version <version>] [--asdf-plugin-gitref <git-ref>] [test-command*]
#
asdf plugin-test purty https://github.com/nsaunders/asdf-purty.git purty
Tests are automatically run in GitHub Actions on push and PR.