This PR provides a script that uses environment variables to determine
which registries to test. This script is being used to run automated
registry tests in CI for AWS, Azure, GCP, Artifactory, GitLab,
Cloudsmith, and Gemfury.
You must configure the following required env vars for each registry:
```
UV_TEST_<registry_name>_URL URL for the registry
UV_TEST_<registry_name>_TOKEN authentication token
UV_TEST_<registry_name>_PKG private package to install
```
The username defaults to "\_\_token\_\_" but can be optionally set with:
```
UV_TEST_<registry_name>_USERNAME
```
For each configured registry, the test will attempt to install the
specified package. Some registries can fall back to PyPI internally, so
it's important to choose a package that only exists in the registry you
are testing.
Currently, a successful test means that it finds the line “ +
<package_name>” in the output. This is because in its current form we
don’t know ahead of time what package it is and hence what the exact
expected output would be. The advantage if that anyone can run this
locally, though they would have to have access to the registries they
want to test.
You can also use the `--use-op` command line argument to derive these
test env vars from a 1Password vault (default is "RegistryTests" but can
be configured with `--op-vault`). It will look at all items in the vault
with names following the pattern `UV_TEST_<registry_name>` and will
derive the env vars as follows:
```
`UV_TEST_<registry_name>_USERNAME` from the `username` field
`UV_TEST_<registry_name>_TOKEN` from the `password` field
`UV_TEST_<registry_name>_URL` from a field with the label `url`
`UV_TEST_<registry_name>_PKG` from a field with the label `pkg`
```
