Remove usages of deprecated APIs of corelib

- Replaced the usages of deprecated APIs of corelib by corresponding
  alternatives in the library code and documentation.

- Modified the tests to make them build when deprecated APIs disabled:
    * Made the the parts of the tests testing the deprecated APIs to
      be compiled conditionally, only when the corresponding methods are
      enabled.
    * If the test-case tests only the deprecated API, but not the
      corresponding replacement, added tests for the replacement.

Task-number: QTBUG-76491
Task-number: QTBUG-76539
Task-number: QTBUG-76541
Change-Id: I62ed4a5b530a965ec3f6502c6480808f938921aa
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/auto/corelib/tools/qcommandlineparser/testhelper/qcommandlineparser_test_helper.cpp b/tests/auto/corelib/tools/qcommandlineparser/testhelper/qcommandlineparser_test_helper.cpp
index b9bcecd607..513c811788 100644
--- a/tests/auto/corelib/tools/qcommandlineparser/testhelper/qcommandlineparser_test_helper.cpp
+++ b/tests/auto/corelib/tools/qcommandlineparser/testhelper/qcommandlineparser_test_helper.cpp
@@ -74,10 +74,12 @@ int main(int argc, char *argv[])
     hiddenOption.setDescription(QStringLiteral("THIS SHOULD NEVER APPEAR"));
     hiddenOption.setFlags(QCommandLineOption::HiddenFromHelp);
     parser.addOption(hiddenOption);
+#if QT_DEPRECATED_SINCE(5, 8)
     QCommandLineOption hiddenOption2(QStringList() << QStringLiteral("hidden2"));
     hiddenOption2.setDescription(QStringLiteral("NEITHER SHOULD THIS"));
     hiddenOption2.setHidden(true);
     parser.addOption(hiddenOption2);
+#endif
 
     // This program supports different options depending on the "command" (first argument).
     // Call parse() to find out the positional arguments.