Pretty much answered by the answers to questions you've already asked - see https://answers.atlassian.com/questions/37041901 as an example.
To save you re-reading though, no. JIRA is an issue tracker, not a test case manager. There are addons that can do it, and integrations for test-case managers, and you should have a look in the marketplace to see which one(s) might suit you.
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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