Add initial unit test for MemoRegenerator

Use the tubhiswt-2D OME-TIFF sample for the 2013-06 which requires
the xalan library to be transformed to the 2016-06 version
Without the dependency, the Bio-Formats reader should fall back
to the basic TIFF reader and only detect one channel

src/test/java/com/glencoesoftware/omero/ms/image/region/MemoRegeneratorTest.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2024 Glencoe Software, Inc. All rights reserved.
+ *
+ * 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.
+ */
+
+package com.glencoesoftware.omero.ms.image.region;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import loci.formats.FormatException;
+import loci.formats.IFormatReader;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import org.junit.Test;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.rules.TemporaryFolder;
+
+import ome.io.nio.BackOff;
+import ome.io.nio.ConfiguredTileSizes;
+import ome.io.nio.FilePathResolver;
+import ome.io.nio.PixelsService;
+import ome.io.nio.PixelBuffer;
+import ome.io.nio.SimpleBackOff;
+import ome.model.core.Pixels;
+import ome.model.enums.PixelsType;
+
+public class MemoRegeneratorTest {
+
+    private PixelsService pixelsService;
+    private FilePathResolver resolver;
+    private BackOff backOff = new SimpleBackOff();
+
+    @Before
+    public void setUp() throws IOException {
+        Path tmpDir = Files.createTempDirectory("memo-test");
+        resolver = mock(FilePathResolver.class);
+        ConfiguredTileSizes sizes = new ConfiguredTileSizes(256, 256, 3192, 3192);
+        pixelsService = new PixelsService(
+            tmpDir.toString(), resolver, backOff, sizes, null);
+    }
+
+    @Test
+    public void testOMEXMLTranformation() throws FormatException, IOException{
+
+        // Sample OME-TIFF file using the 2013-06 schema which requires the
+        // xalan library during the transformation to the 2016-06 model
+        ClassLoader classLoader = getClass().getClassLoader();
+        String filePath = new File(classLoader
+            .getResource("tubhiswt-2D/tubhiswt_C0.ome.tif").getFile())
+            .getAbsolutePath();
+
+        Pixels pixels = mock(Pixels.class);
+        PixelsType pixelsType = new PixelsType("uint8");
+        when(pixels.getPixelsType()).thenReturn(pixelsType);
+        when(pixels.getSizeX()).thenReturn(512);
+        when(pixels.getSizeY()).thenReturn(512);
+        when(resolver.getOriginalFilePath(pixelsService, pixels)).thenReturn(filePath);
+
+        PixelBuffer buffer = pixelsService.getPixelBuffer(pixels, false);
+        Assert.assertEquals(2, buffer.getSizeC());
+    }
+}