commit 2d4ec11c4c08b125109aafd44c9a5a8c4dc556d3 (HEAD -> legacyCompare)
Author: IvanYossi <ghevan@gmail.com>
Date:   Fri Apr 27 21:37:40 2018 -0500

    Krita mask similarity test:
    Only test for Default brush

diff --git a/libs/brush/tests/CMakeLists.txt b/libs/brush/tests/CMakeLists.txt
index 7ae6ecbb8a..de6602807f 100644
--- a/libs/brush/tests/CMakeLists.txt
+++ b/libs/brush/tests/CMakeLists.txt
@@ -25,6 +25,7 @@ ecm_add_tests(
     kis_gbr_brush_test.cpp
     kis_boundary_test.cpp
     kis_imagepipe_brush_test.cpp
+    kis_mask_similarity_test.cpp
     NAME_PREFIX "krita-libbrush-"
     LINK_LIBRARIES kritaimage kritalibbrush Qt5::Test
 )
diff --git a/libs/brush/tests/kis_mask_similarity_test.cpp b/libs/brush/tests/kis_mask_similarity_test.cpp
new file mode 100644
index 0000000000..ce7656641d
--- /dev/null
+++ b/libs/brush/tests/kis_mask_similarity_test.cpp
@@ -0,0 +1,92 @@
+/*
+ *  Copyright (c) 2018 Iván Santa María <ghevan@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "kis_mask_similarity_test.h"
+
+#include <QTest>
+#include <QtMath>
+#include <KoColor.h>
+
+#include <testutil.h>
+#include "kis_auto_brush.h"
+#include "kis_auto_brush_factory.h"
+#include <brushengine/kis_paint_information.h>
+#include "kis_mask_generator.h"
+
+class KisMaskSimilarityTester
+{
+public:
+    KisMaskSimilarityTester(KisMaskGenerator* _legacy, KisMaskGenerator* _vectorized)
+        : legacy(_legacy)
+        , vectorized(_vectorized)
+    {
+        int size = legacy->diameter();
+
+        KisBrushSP brush = initializeBrush(legacy);
+        KisBrushSP vBrush = initializeBrush(vectorized);
+
+        KoColor color(Qt::black, colorSpace);
+
+        QImage vectorImage = convertMaskToQImage(brush, color);
+        QImage scalarImage = convertMaskToQImage(vBrush, color);
+
+        // Check error deviation between values is less than 0.05
+        for (int i = 0; i < size; ++i) {
+            for (int j = 0; j < size; ++j) {
+                qint16 error(qFabs(scalarImage.pixelColor(i,j).alphaF() - vectorImage.pixelColor(i,j).alphaF()) * 100);
+                QVERIFY(error < 5);
+            }
+        }
+
+        scalarImage.save(QString("scalar2.png"),"PNG");
+        vectorImage.save(QString("vector2.png"),"PNG");
+    }
+
+private:
+    KisBrushSP initializeBrush(KisMaskGenerator *mg){
+        KisBrushSP brush = new KisAutoBrush(mg, 1.0, 0.0);
+        brush->setSpacing(0.15);
+        brush->setAutoSpacing(true, 0.1);
+        return brush;
+    };
+
+    QImage convertMaskToQImage(KisBrushSP brush, KoColor color){
+        KisFixedPaintDeviceSP dev = new KisFixedPaintDevice(colorSpace);
+        brush->mask(dev, color, shape, info);
+        return dev->convertToQImage(colorSpace->profile());
+    };
+
+protected:
+    const KoColorSpace* colorSpace = KoColorSpaceRegistry::instance()->rgb8();
+    KisPaintInformation info = KisPaintInformation(QPointF(40.0, 10.0), 0.5);
+    KisDabShape shape = KisDabShape(1.0,1.0,1.0);
+
+    KisMaskGenerator* legacy;
+    KisMaskGenerator* vectorized;
+    KisFixedPaintDeviceSP m_paintDevice;
+};
+
+
+void KisMaskSimilarityTest::testCircleMask()
+{
+    KisMaskSimilarityTester(
+        new KisCircleMaskGenerator(40, 1.0, 0.5, 0.5, 3, true),
+        new KisCircleMaskGenerator(40, 1.0, 0.5, 0.5, 2, true));
+}
+
+QTEST_MAIN(KisMaskSimilarityTest)
diff --git a/libs/brush/tests/kis_mask_similarity_test.h b/libs/brush/tests/kis_mask_similarity_test.h
new file mode 100644
index 0000000000..eed28cbe62
--- /dev/null
+++ b/libs/brush/tests/kis_mask_similarity_test.h
@@ -0,0 +1,32 @@
+/*
+ *  Copyright (c) 2018 Iván Santa María <ghevan@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef KIS_MASK_SIMILARITY_TEST
+#define KIS_MASK_SIMILARITY_TEST
+
+#include <QtTest>
+
+class KisMaskSimilarityTest : public QObject
+{
+    Q_OBJECT
+private Q_SLOTS:
+
+    void testCircleMask();
+};
+
+#endif