Category keys are supposed to be non-null strings.
The test cases use bogus integer values, which causes issues when
refactoring more strictly enforces validity checks on category sort
key values.
Change-Id: If2937a694ba6bd4c522336f33aa58d40949b5a54
Valid values for ParserCache::$mIndexPolicy are '', 'noindex', and 'index'.
The test cases use the bogus value 'policy1', which causes issues when
refactoring more strictly enforces validity checks on index policy
values.
Change-Id: I2d00ff4e3ded043d18942c8482a39fac14ec60bc