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package org.scijava.util;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

import java.util.ArrayList;

import org.junit.Test;

/**
 * Tests {@link ByteArray}.
 * 
 * @author Curtis Rueden
 * @author Johannes Schindelin
 */
public class ByteArrayTest extends PrimitiveArrayTest {

	/** Tests {@link ByteArray#ByteArray()}. */
	@Test
	public void testConstructorNoArgs() {
		final ByteArray array = new ByteArray();
		assertEquals(0, array.size());
		assertEquals(0, array.copyArray().length);
	}

	/** Tests {@link ByteArray#ByteArray(int)}. */
	@Test
	public void testConstructorSize() {
		final int size = 24;
		final ByteArray array = new ByteArray(size);
		assertEquals(size, array.size());
		assertEquals(size, array.copyArray().length);
	}

	/** Tests {@link ByteArray#ByteArray(byte[])}. */
	@Test
	public void testConstructorArray() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw);
		assertSame(raw, array.getArray());
		assertEquals(raw.length, array.size());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, raw[i], array.getValue(i));
		}
		assertArrayEquals(raw, array.copyArray());
	}

	/** Tests {@link ByteArray#addValue(byte)}. */
	@Test
	public void testAddValue() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		final byte e6 = 1, e7 = 2;
		array.addValue(e6);
		array.addValue(e7);
		assertEquals(raw.length + 2, array.size());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, raw[i], array.getValue(i));
		}
		assertEquals(e6, array.getValue(5));
		assertEquals(e7, array.getValue(6));
	}

	/** Tests {@link ByteArray#removeValue(byte)}. */
	public void testRemoveValue() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		assertEquals(raw.length, array.size());
		array.removeValue(raw[0]);
		assertEquals(raw.length - 1, array.size());
		array.removeValue(raw[2]);
		assertEquals(raw.length - 2, array.size());
		array.removeValue(raw[4]);
		assertEquals(raw.length - 3, array.size());
		assertEquals(raw[1], array.getValue(0));
		assertEquals(raw[3], array.getValue(1));
	}

	/** Tests {@link ByteArray#getValue(int)}. */
	public void testGetValue() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, raw[i], array.getValue(i));
		}
	}

	/** Tests {@link ByteArray#setValue(int, byte)}. */
	@Test
	public void testSetValue() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		final byte e0 = 7, e2 = 1, e4 = 2;
		array.setValue(0, e0);
		array.setValue(2, e2);
		array.setValue(4, e4);
		assertEquals(raw.length, array.size());
		assertEquals(e0, array.getValue(0));
		assertEquals(raw[1], array.getValue(1));
		assertEquals(e2, array.getValue(2));
		assertEquals(raw[3], array.getValue(3));
		assertEquals(e4, array.getValue(4));
	}

	/** Tests {@link ByteArray#addValue(int, byte)}. */
	@Test
	public void testAddValueIndex() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		final byte e0 = 7, e4 = 1, e7 = 2;
		array.addValue(0, e0);
		array.addValue(4, e4);
		array.addValue(7, e7);
		assertEquals(raw.length + 3, array.size());
		assertEquals(e0, array.getValue(0));
		assertEquals(raw[0], array.getValue(1));
		assertEquals(raw[1], array.getValue(2));
		assertEquals(raw[2], array.getValue(3));
		assertEquals(e4, array.getValue(4));
		assertEquals(raw[3], array.getValue(5));
		assertEquals(raw[4], array.getValue(6));
		assertEquals(e7, array.getValue(7));
	}

	/** Tests {@link ByteArray#remove(int)}. */
	public void testRemoveIndex() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		assertEquals(raw.length, array.size());
		array.remove(0);
		assertEquals(raw.length - 1, array.size());
		array.remove(2);
		assertEquals(raw.length - 2, array.size());
		array.remove(4);
		assertEquals(raw.length - 3, array.size());
		assertEquals(raw[1], array.getValue(0));
		assertEquals(raw[3], array.getValue(1));
	}

	/** Tests {@link ByteArray#indexOf(byte)}. */
	@Test
	public void testIndexOf() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, i, array.indexOf(raw[i]));
		}
		assertEquals(-1, array.indexOf(-1));
		assertEquals(-1, array.indexOf(0));
		assertEquals(-1, array.indexOf(1));
		assertEquals(-1, array.indexOf(Byte.MAX_VALUE));
		assertEquals(-1, array.indexOf(Byte.MIN_VALUE));
	}

	/** Tests {@link ByteArray#lastIndexOf(byte)}. */
	@Test
	public void testLastIndexOf() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, i, array.lastIndexOf(raw[i]));
		}
		assertEquals(-1, array.lastIndexOf(-1));
		assertEquals(-1, array.lastIndexOf(0));
		assertEquals(-1, array.lastIndexOf(1));
		assertEquals(-1, array.lastIndexOf(Byte.MAX_VALUE));
		assertEquals(-1, array.lastIndexOf(Byte.MIN_VALUE));
	}

	/** Tests {@link ByteArray#contains(byte)}. */
	@Test
	public void testContains() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertTrue("@" + i, array.contains(raw[i]));
		}
		assertFalse(array.contains(-1));
		assertFalse(array.contains(0));
		assertFalse(array.contains(1));
		assertFalse(array.contains(Byte.MAX_VALUE));
		assertFalse(array.contains(Byte.MIN_VALUE));
	}

	/**
	 * Tests {@link ByteArray#getArray()} and
	 * {@link ByteArray#setArray(byte[])}.
	 */
	@Test
	public void testSetArray() {
		final ByteArray array = new ByteArray();
		final byte[] raw = { 1, 2, 3, 5, 8, 13, 21 };
		array.setArray(raw);
		assertSame(raw, array.getArray());
	}

	/** Tests {@link ByteArray#insert(int, int)}. */
	@Test
	public void testInsert() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		testInsert(new ByteArray(raw));
	}

	/** Tests {@link ByteArray#delete(int, int)}. */
	@Test
	public void testDelete() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		testDelete(new ByteArray(raw));
	}

	/** Tests {@link ByteArray#get(int)}. */
	@Test
	public void testGet() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, raw[i], array.get(i).byteValue());
		}
	}

	/** Tests {@link ByteArray#set(int, Byte)}. */
	@Test
	public void testSet() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		final Byte e0 = 7, e2 = 1, e4 = 2;
		array.set(0, e0);
		array.set(2, e2);
		array.set(4, e4);
		assertEquals(raw.length, array.size());
		assertEquals(e0, array.get(0));
		assertEquals(raw[1], array.getValue(1));
		assertEquals(e2, array.get(2));
		assertEquals(raw[3], array.getValue(3));
		assertEquals(e4, array.get(4));
	}

	/** Tests {@link ByteArray#add(int, Byte)}. */
	@Test
	public void testAdd() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		final Byte e6 = 1, e7 = 2;
		array.add(e6);
		array.add(e7);
		assertEquals(raw.length + 2, array.size());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, raw[i], array.getValue(i));
		}
		assertEquals(e6, array.get(5));
		assertEquals(e7, array.get(6));
	}

	/** Tests {@link ByteArray#indexOf(Object)}. */
	@Test
	public void testIndexOfBoxed() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, i, array.indexOf(new Byte(raw[i])));
		}
		assertEquals(-1, array.indexOf(new Byte((byte) -1)));
		assertEquals(-1, array.indexOf(new Byte((byte) 0)));
		assertEquals(-1, array.indexOf(new Byte((byte) 1)));
		assertEquals(-1, array.indexOf(new Byte(Byte.MAX_VALUE)));
		assertEquals(-1, array.indexOf(new Byte(Byte.MIN_VALUE)));
		assertEquals(-1, array.indexOf(null));
		assertEquals(-1, array.indexOf("Not a byte"));
	}

	/** Tests {@link ByteArray#lastIndexOf(Object)}. */
	@Test
	public void testLastIndexOfBoxed() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertEquals("@" + i, i, array.lastIndexOf(new Byte(raw[i])));
		}
		assertEquals(-1, array.lastIndexOf(new Byte((byte) -1)));
		assertEquals(-1, array.lastIndexOf(new Byte((byte) 0)));
		assertEquals(-1, array.lastIndexOf(new Byte((byte) 1)));
		assertEquals(-1, array.lastIndexOf(new Byte(Byte.MAX_VALUE)));
		assertEquals(-1, array.lastIndexOf(new Byte(Byte.MIN_VALUE)));
		assertEquals(-1, array.lastIndexOf(null));
		assertEquals(-1, array.lastIndexOf("Not a byte"));
	}

	/** Tests {@link ByteArray#contains(Object)}. */
	@Test
	public void testContainsBoxed() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		for (int i = 0; i < raw.length; i++) {
			assertTrue("@" + i, array.contains(new Byte(raw[i])));
		}
		assertFalse(array.contains(new Byte((byte) -1)));
		assertFalse(array.contains(new Byte((byte) 0)));
		assertFalse(array.contains(new Byte((byte) 1)));
		assertFalse(array.contains(new Byte(Byte.MAX_VALUE)));
		assertFalse(array.contains(new Byte(Byte.MIN_VALUE)));
		assertFalse(array.contains(null));
		assertFalse(array.contains("Not a byte"));
	}

	/** Tests {@link ByteArray#remove(Object)}. */
	@Test
	public void testRemove() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		assertEquals(raw.length, array.size());
		array.remove(new Byte(raw[0]));
		assertEquals(raw.length - 1, array.size());
		array.remove(new Byte(raw[2]));
		assertEquals(raw.length - 2, array.size());
		array.remove(new Byte(raw[4]));
		assertEquals(raw.length - 3, array.size());
		assertEquals(raw[1], array.getValue(0));
		assertEquals(raw[3], array.getValue(1));
	}

	/** Tests {@link ByteArray#containsAll}. */
	@Test
	public void testContainsAll() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());

		final ArrayList<Byte> list = new ArrayList<>();
		assertTrue(array.containsAll(list));
		list.add((byte) 13);
		assertTrue(array.containsAll(list));
		list.add((byte) 1);
		assertFalse(array.containsAll(list));

		final ByteArray yes = new ByteArray(new byte[] { 3, 8, 21 });
		assertTrue(array.containsAll(yes));

		final ByteArray no = new ByteArray(new byte[] { 5, 13, 1 });
		assertFalse(array.containsAll(no));
	}

	/** Tests {@link ByteArray#addAll(int, java.util.Collection)}. */
	@Test
	public void testAddAll() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		final byte[] add = { 1, 7 };
		final ByteArray toAdd = new ByteArray(add.clone());
		final int index = 3;
		array.addAll(index, toAdd);
		for (int i = 0; i < index; i++) {
			assertEquals(raw[i], array.getValue(i));
		}
		for (int i = index; i < index + add.length; i++) {
			assertEquals(add[i - index], array.getValue(i));
		}
		for (int i = index + add.length; i < raw.length + add.length; i++) {
			assertEquals(raw[i - add.length], array.getValue(i));
		}
	}

	/** Tests {@link ByteArray#removeAll}. */
	@Test
	public void testRemoveAll() {
		final byte[] raw = { 3, 5, 8, 13, 21 };
		final ByteArray array = new ByteArray(raw.clone());
		final ByteArray toRemove = new ByteArray(new byte[] { 3, 8, 21 });
		assertEquals(raw.length, array.size());
		array.removeAll(toRemove);
		assertEquals(raw.length - 3, array.size());
		assertEquals(raw[1], array.getValue(0));
		assertEquals(raw[3], array.getValue(1));
	}

}
