Util methods to modify the custom library search path

refs #615

tests/blackmisc/testlibrarypath.cpp

@@ -0,0 +1,40 @@
+/* Copyright (C) 2016
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \cond PRIVATE_TESTS
+
+/*!
+ * \file
+ * \ingroup testblackmisc
+ */
+
+#include "testlibrarypath.h"
+#include "blackmisc/librarypath.h"
+#include "blackmisc/buildconfig.h"
+
+namespace BlackMiscTest
+{
+    void CTestLibraryPath::libraryPath()
+    {
+        if (!BlackMisc::CBuildConfig::isRunningOnWindowsNtPlatform()) { return; }
+
+        auto emptyPath = BlackMisc::getCustomLibraryPath();
+        QVERIFY2(emptyPath.isEmpty(), "Default path should be empty");
+
+        QString customLibraryPath("c:\test");
+        BlackMisc::setCustomLibraryPath(customLibraryPath);
+        QVERIFY2(BlackMisc::getCustomLibraryPath() == customLibraryPath, "setLibraryPath failed");
+
+        BlackMisc::setCustomLibraryPath(emptyPath);
+        QVERIFY2(emptyPath.isEmpty(), "Path should be empty again.");
+    }
+
+} // namespace
+
+//! \endcond