/*
 * #%L
 * Image processing operations for SciJava Ops.
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 * Copyright (C) 2014 - 2024 SciJava developers.
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package org.scijava.ops.image.copy;

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

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.scijava.function.Computers;
import org.scijava.types.Nil;
import org.scijava.util.MersenneTwisterFast;

import org.scijava.ops.image.AbstractOpTest;
import net.imglib2.Cursor;
import net.imglib2.IterableInterval;
import net.imglib2.img.Img;
import net.imglib2.img.array.ArrayImg;
import net.imglib2.img.array.ArrayImgFactory;
import net.imglib2.img.basictypeaccess.array.ArrayDataAccess;
import net.imglib2.img.planar.PlanarImgFactory;
import net.imglib2.type.NativeType;
import net.imglib2.type.numeric.real.DoubleType;
import net.imglib2.type.numeric.real.FloatType;

/**
 * Test
 * {@link Copiers#copyIterableInterval(Computers.Arity1, IterableInterval, IterableInterval)}
 *
 * @author Christian Dietz (University of Konstanz)
 */
public class CopyIITest extends AbstractOpTest {

	private Img<DoubleType> input;

	@BeforeEach
	public void createData() {
		input = new PlanarImgFactory<>(new DoubleType()).create(new int[] { 120,
			100 });

		final MersenneTwisterFast r = new MersenneTwisterFast(System
			.currentTimeMillis());

		final Cursor<DoubleType> inc = input.cursor();

		while (inc.hasNext()) {
			inc.next().set(r.nextDouble());
		}
	}

	@Test
	public void testCopyIINoOutput() {
		var nil = new Nil<IterableInterval<DoubleType>>() {};
		var op = ops.op("copy.img").inType(nil).outType(nil).function();
		IterableInterval<DoubleType> output = op.apply(input);

		Cursor<DoubleType> inc = input.localizingCursor();
		Cursor<DoubleType> out = output.cursor();

		while (inc.hasNext()) {
			inc.fwd();
			out.fwd();
			assertEquals(inc.get().get(), out.get().get(), 0.0);
		}
	}

	@Test
	public void testCopyType() {
		Img<FloatType> inputFloat = new ArrayImgFactory<>(new FloatType()).create(
			new int[] { 120, 100 });

		Img<FloatType> output = ops.op("copy.img").input(inputFloat).outType(
			new Nil<Img<FloatType>>()
			{}).apply();

		assertTrue(output.firstElement() instanceof FloatType,
			"Should be FloatType.");
	}

	@Test
	public void testCopyIIWithOutput() {
		Img<DoubleType> output = input.factory().create(input, input
			.firstElement());

		ops.op("copy.img").input(input).output(output).compute();

		final Cursor<DoubleType> inc = input.cursor();
		final Cursor<DoubleType> outc = output.cursor();

		while (inc.hasNext()) {
			assertEquals(inc.next().get(), outc.next().get(), 0.0);
		}
		Img<FloatType> bar = foo();
	}

	private static <N extends NativeType<N>, A extends ArrayDataAccess<A>>
		ArrayImg<N, A> foo()
	{
		return null;
	}
}
