Make sure that enum documentation contains unique IDs for animations #2060
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Currently, on pages like this, the animations produced don't have unique IDs, because for enum fields, their
oneLineDoccontains the entire documentation, so that they all appear in the Constants list on the enum's class page.The way we tried to generate unique values in the past was to assume that each element would appear on its own page, and so be unique, but that's not true for enums.
This change creates a package-level
Map<String, Set<String>that contains a mapping fromElement.hrefto a set of animation IDs that have been already used for that href. We then generate new ids, making sure that each new ID is unique for the href. This should assure that there are no non-unique IDs on a single output page, including checking to make sure that user-supplied IDs are unique per page.Also added a test that should make sure this is the case.