When you have a comma in a test module name it appears as an escaped (with backslash) comma in the test window. I.e.:
Quote:Tests.QNameFunctions.fn:QName-against-empty\, for generic-comparison
Screenshot:
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Not a big bug of any kind, just thought you'd know about it. Note that it does *not* happen in test names themselves (i.e., methods), but in modules.