Skip all integration tests if disabled

[melvo]

PR check list:

• [x] Document your code
• [x] Add \since QXmpp 1.X
• [x] Fix doxygen warnings (see log when building with -DBUILD_DOCUMENTATION=ON)
• [x] Update doc/xep.doc
• [x] Add unit tests
• [x] Format the code: Run clang-format -i src/<edited-file(s)> tests/<edited-file(s)>

[lnjX]

That's no integration test. I know that these tests can cause problems, but marking them as "integration tests" is questionable.

[codecov[bot]]

Codecov Report

Merging #439 (71bb717) into master (e577f28) will decrease coverage by 3.64%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #439      +/-   ##
==========================================
- Coverage   69.29%   65.64%   -3.65%     
==========================================
  Files         252      252              
  Lines       23289    23354      +65     
==========================================
- Hits        16138    15331     -807     
- Misses       7151     8023     +872     

Impacted Files	Coverage Δ
...ests/qxmppiceconnection/tst_qxmppiceconnection.cpp	4.65% <ø> (-95.35%)	:arrow_down:
tests/qxmppomemomanager/tst_qxmppomemomanager.cpp	24.54% <ø> (ø)
.../qxmpptransfermanager/tst_qxmpptransfermanager.cpp	20.87% <ø> (-79.13%)	:arrow_down:
tests/qxmppvcardmanager/tst_qxmppvcardmanager.cpp	52.38% <ø> (ø)
src/base/QXmppIbbIq.cpp	0.00% <0.00%> (-100.00%)	:arrow_down:
src/base/QXmppByteStreamIq.cpp	0.00% <0.00%> (-84.15%)	:arrow_down:
src/client/QXmppTransferManager.cpp	4.49% <0.00%> (-64.47%)	:arrow_down:
src/base/QXmppStreamInitiationIq.cpp	58.82% <0.00%> (-37.26%)	:arrow_down:
... and 4 more

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[melvo]

That's no integration test. I know that these tests can cause problems, but marking them as "integration tests" is questionable.

Thanks. How could that problem be solved?

[lnjX]

Thanks. How could that problem be solved?

Fixing the tests, marking tests requiring a working internet connection as online tests, make online tests optional.