Unicode 15.1 (more spcifically UTS #46, revision 31) changes how
host names are processed. The initial Unicode host name mapping
is done without validity checking. That check was used in the past
to mark QUrl's invalid. This patch inserts simplified validity
check later. This check is similar to one performed before
conversion to unicode, but does not include BiDi check to keep
names starting with xn-- valid.
Additional complication is that U+1E9E LATIN CAPITAL LETTER SHARP S
must be mapped to "ss" with transitional processing.
It is not possible anymore to predict whether Qt implementation
considers a URL valid by using only error codes in the tests
vectors file. The test was adjusted to expect an empty string
(indicating invalid QUrl) or string matching the entry in vectors
file if there are any processing errors specified for that entry.
Unblacklist tst_QUrlUts46::idnaTestV2.
Task-number: QTBUG-121529
Change-Id: Iad5dadd1a6695fa54b432e35000b350cd6e06341
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
b2764f7802