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 * Image processing operations for SciJava Ops.
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package org.scijava.ops.image.image.ascii;

import static org.junit.jupiter.api.Assertions.assertTrue;

import org.scijava.ops.image.AbstractOpTest;
import net.imglib2.img.Img;
import net.imglib2.img.array.ArrayImgs;
import net.imglib2.type.numeric.integer.UnsignedByteType;
import net.imglib2.util.Pair;

import org.junit.jupiter.api.Test;
import org.scijava.types.Nil;

/**
 * Tests {@link org.scijava.ops.image.Ops.Image.ASCII}.
 *
 * @author Leon Yang
 */
public class ASCIITest extends AbstractOpTest {

	@Test
	public void testDefaultASCII() {
		// character set used in DefaultASCII, could be updated if necessary
		final String CHARS = "#O*o+-,. ";
		final int len = CHARS.length();
		final int width = 10;
		final int offset = 0;
		final byte[] array = new byte[width * len];
		for (int i = 0; i < len; i++) {
			for (int j = 0; j < width; j++) {
				array[i * width + j] = (byte) (offset + i * width + j);
			}
		}
		final Img<UnsignedByteType> img = ArrayImgs.unsignedBytes(array, width,
			len);
		final Pair<UnsignedByteType, UnsignedByteType> minMax = ops.op(
			"stats.minMax").input(img).outType(
				new Nil<Pair<UnsignedByteType, UnsignedByteType>>()
				{}).apply();
		final String ascii = ops.op("image.ascii").input(img, minMax.getA(), minMax
			.getB()).outType(String.class).apply();
		for (int i = 0; i < len; i++) {
			for (int j = 0; j < width; j++) {
				assertTrue(ascii.charAt(i * (width + 1) + j) == CHARS.charAt(i));
			}
			assertTrue(ascii.charAt(i * (width + 1) + width) == '\n');
		}
	}
}
