Split the giant test binaries into smaller unit tests

This is an intermediate step to have smaller unit tests. It is a trade off
between having many many test executables compared to a few bigger ones. But
this comes a lot closer to what QtTest is meant to be used.

tests/blackmisc/testicon/testicon.cpp

@@ -0,0 +1,59 @@
+/* Copyright (C) 2017
+ * 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 "blackmisc/iconlist.h"
+#include "test.h"
+#include <QString>
+#include <QTest>
+
+using namespace BlackMisc;
+
+namespace BlackMiscTest
+{
+    //! Testing icons
+    class CTestIcon : public QObject
+    {
+        Q_OBJECT
+
+    private slots:
+        //! Icon order/index
+        void iconIndex();
+    };
+
+    void CTestIcon::iconIndex()
+    {
+        const int max = static_cast<int>(CIcons::IconIsGenerated);
+        QVERIFY2(CIconList::allIcons().size() == max, "Icon list size");
+
+        int c = 0;
+        for (const CIcon &icon : CIconList::allIcons())
+        {
+            CIcons::IconIndex ii = icon.getIndex();
+            const int i = static_cast<int>(ii);
+            if (i != c)
+            {
+                static const QString verifyMsg("Wrong index %1/%2 for icon %3");
+                qDebug() << verifyMsg.arg(i).arg(c).arg(icon.getDescriptiveText());
+                QVERIFY2(i == c, "Wrong icon index");
+            }
+            c++;
+        }
+    }
+} //namespace
+
+//! main
+BLACKTEST_MAIN(BlackMiscTest::CTestIcon);
+
+#include "testicon.moc"
+
+//! \endcond