Make checkBlackLists() return bool

Make checkBlackLists() return true if the test is blacklisted and false
otherwise.

Change-Id: Ief400a10a47ec7c21ea1d37fe75c7dc08739e06c
Reviewed-by: Dimitrios Apostolou <jimis@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

src/testlib/qtestblacklist.cpp

@@ -279,7 +279,8 @@ void parseBlackList()
     }
 }
 
-void checkBlackLists(const char *slot, const char *data, const char *global)
+// Returns \c true if this test-case is blacklisted.
+bool checkBlackLists(const char *slot, const char *data, const char *global)
 {
     bool ignore = ignoreAll;
 
@@ -302,6 +303,7 @@ void checkBlackLists(const char *slot, const char *data, const char *global)
     }
 
     QTestResult::setBlacklistCurrentTest(ignore);
+    return ignore;
 }
 
 } // QTestPrivate

src/testlib/qtestblacklist_p.h

@@ -23,7 +23,7 @@ QT_BEGIN_NAMESPACE
 namespace QTestPrivate {
     // Export functions so they can also be used by QQuickTest
     Q_TESTLIB_EXPORT void parseBlackList();
-    Q_TESTLIB_EXPORT void checkBlackLists(const char *slot, const char *data,
+    Q_TESTLIB_EXPORT bool checkBlackLists(const char *slot, const char *data,
                                           const char *global = nullptr);
 }