Test for RandomAccessiblePair of Neighborhood

Author: stelfrich

src/test/java/net/imglib2/algorithm/neighborhood/RandomAccessiblePairWithNeighborhoodTest.java

@@ -0,0 +1,48 @@
+package net.imglib2.algorithm.neighborhood;
+
+import net.imglib2.Cursor;
+import net.imglib2.FinalDimensions;
+import net.imglib2.RandomAccess;
+import net.imglib2.RandomAccessible;
+import net.imglib2.RandomAccessibleInterval;
+import net.imglib2.img.Img;
+import net.imglib2.img.array.ArrayImgFactory;
+import net.imglib2.outofbounds.OutOfBoundsBorderFactory;
+import net.imglib2.outofbounds.OutOfBoundsFactory;
+import net.imglib2.type.numeric.integer.ByteType;
+import net.imglib2.util.Pair;
+import net.imglib2.view.Views;
+
+import org.junit.Test;
+
+public class RandomAccessiblePairWithNeighborhoodTest {
+
+	@Test
+	public void test() {
+		// Extend input with Views.extend()
+		Img<ByteType> in = new ArrayImgFactory< ByteType >().create( new FinalDimensions(3, 3), new ByteType() );
+		OutOfBoundsFactory<ByteType, RandomAccessibleInterval<ByteType>> outOfBoundsFactory =
+			new OutOfBoundsBorderFactory<>();
+		RandomAccessibleInterval<ByteType> extendedIn = Views.interval(Views.extend(in, outOfBoundsFactory), in); // FAILS
+//		RandomAccessible<ByteType> extendedIn = Views.extend(in, outOfBoundsFactory); // WORKS
+
+		// Create RandomAccessiblePair
+		final RandomAccessible<Neighborhood<ByteType>> safe = new RectangleShape(1,
+			false).neighborhoodsRandomAccessibleSafe(extendedIn);
+		RandomAccessible<Pair<Neighborhood<ByteType>, ByteType>> pair = Views.pair(safe, extendedIn);
+
+		// Set position out of bounds
+		RandomAccess<Pair<Neighborhood<ByteType>, ByteType>> randomAccess = pair
+			.randomAccess();
+		randomAccess.setPosition(new int[] { 0, 0 });
+
+		// Get value from Neighborhood via RandomAccessiblePair
+		Pair<Neighborhood<ByteType>, ByteType> pair2 = randomAccess.get();
+		Neighborhood<ByteType> neighborhood = pair2.getA();
+		Cursor<ByteType> cursor = neighborhood.cursor();
+		
+		// Tries to access (-1, -1) of the source
+		cursor.next().getRealDouble();
+	}
+
+}