For people running this test who are burdened with a broken DNS server
and for whom the check added in the previous commit fails, skipping the
test.
Incidentally, this is useful for developing QDnsLookup itself, because
some otherwise-reasonable servers are known to fail for some queries.
For example, dnsmasq doesn't like queries of type ANY:
SKIP : tst_QDnsLookup::lookup(any-a-single) Server refused or was unable to answer query; a-single type ANY: Server failure
SKIP : tst_QDnsLookup::lookup(any-a-plus-aaaa) Server refused or was unable to answer query; a-plus-aaaa type ANY: Server failure
SKIP : tst_QDnsLookup::lookup(any-multi) Server refused or was unable to answer query; multi type ANY: Server failure
Now I can get it to pass with QTEST_DNS_SERVER='[2001:4860:4860::8888]':
PASS : tst_QDnsLookup::lookup(any-a-single)
PASS : tst_QDnsLookup::lookup(any-a-plus-aaaa)
PASS : tst_QDnsLookup::lookup(any-multi)
Note for the future: setting a non-default server may exercise different
code paths inside QDnsLookup, so this is not a replacement for having
proper DNS servers in the CI.
Fixes: QTBUG-129335
Change-Id: I81dcd4834972efa84c9ffffdd8aaafb68f20560b
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
(cherry picked from commit 10fea78bdcad2086c980fa1c1bbcd5bb543e4366)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
c2df419edf