I want to create a new 'test' issue but it is not available (only story, bug, task and epic are available). When I go to settings and select 'issues' there are three issue types available: Epic, Story and Test and they are also available in the default issue test scheme. I don't know why I can't see those types of issues under 'create' an issue button.
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The "create" button can only create Epic-level and base-level issue types. So I think your "Test" type is a sub-task level type.
Sub-tasks have to be created within the context of their parent issue (as they are a fragment of the parent, not an item in their own right).
Go to an issue you want to add a test to and click "add sub-task" in the tools menu, and you'll be offered a test type. (Once you have one of them, then there will be a sub-tasks section in your issue view which has a + for creating more, without needing to go into the tools)
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