Adds more tests to cover single character types, relations, and conditions. There are 2 that currently aren't covered as I can't find any reference to the errors currently.
[ ] I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
[x] The correct base branch is being used, if not main
[ ] I have added tests to validate that the change in functionality is working as expected
Description
Adds more tests to cover single character types, relations, and conditions. There are 2 that currently aren't covered as I can't find any reference to the errors currently.
References
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