package test;

import static org.junit.Assert.assertArrayEquals;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Random;

import javax.imageio.ImageIO;

import org.junit.Test;

import sorting.Packet;
import sorting.PacketComparator;

public abstract class TestPacketSortBase {
public static final int TIME_OUT = 2000;
public static final int MIN_ROWS = 8;
public static final int ROW_RANGE = 3;
public static final int MIN_CHUNK_WIDTH = 40;
public static final int CHUNK_WIDTH_RANGE = 20;

/**
* Testing General Sorting sort_type
* =============================================
*/

@Test(timeout = TIME_OUT)
public void test_sorting_no_element() {
   Integer[] nums = {};
   testPacketSortType(nums, nums);
}

@Test(timeout = TIME_OUT)
public void test_sorting_single_element() {
   testPacketSortType(new Integer[] { 0 }, new Integer[] { 0 });
}

@Test(timeout = TIME_OUT)
public void test_sorting_many_element_even_size() {
   Integer[] majorIndexes = { 9, 10, 3, 5, 200, 90 };
   Integer[] minorIndexes = { 13, 0, 29, 39, 239, 38 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_sorting_many_element_odd_size() {
   Integer[] majorIndexes = { 9, 10, 3, 5, 200, 90, 7 };
   Integer[] minorIndexes = { 13, 0, 29, 39, 239, 38, 32 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_sorting_many_element_no_duplicates() {
   Integer[] majorIndexes = { 9, 10, 3, 5, 200, 90, 39, 409, 2, 0, 23,
            542, 35, 13, 5, 20 };
   Integer[] minorIndexes = { 13, 0, 29, 39, 239, 38, 3, 92, 12, 88, 31,
            54, 53, 4, 1, 28 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_many_elements_medium_size_test() {
   Integer[] majorIndexes = { 19, 13, 11, 12, 17, 14, 18, 15, 10, 16 };
   Integer[] minorIndexes = { 12, 88, 31, 54, 53, 4, 1, 28, 2, 11 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_many_elements_both_medium_test2() {
   Integer[] majorIndexes = { 18, 29, 480, 28, 1, 3, 2, 2, 0, 228 };
   Integer[] minorIndexes = { 10, 20, 30, 40, 50, 60, 70, 80, 90, 338 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_many_elements_medium_test3() {
   Integer[] minorIndexes = { 2, 78, 23, 45, 89, 2, 43, 12, 8 };
   Integer[] majorIndexes = { 8, 9, 3, 5, 2, 6, 1, 4, 7 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_many_elements_no_gaps() {
   Integer[] majorIndexes = { 8, 9, 3, 5, 2, 6, 1, 4, 7, 10 };
   Integer[] minorIndexes = { 9, 13, 11, 12, 17, 14, 18, 15, 10, 16 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_many_elements_with_duplicates_major_minor_same() {
   Integer[] majorIndexes = { 11, 9, 10, 15, 17, 4, 0, 16, 16, 4, 9, 5, 4,
            2, 0, 0, 3, 10, 91, 9, 1, 2, 5, 15, 13, 16, 17, 3, 4, 5 };
   Integer[] minorIndexes = { 1, 9, 10, 15, 17, 4, 0, 16, 16, 4, 9, 5, 4,
            2, 0, 0, 3, 10, 91, 9, 1, 2, 5, 15, 13, 16, 17, 3, 4, 5 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_many_elements_with_duplicates_major_minor_different() {
   Integer[] majorIndexes = { 1, 9, 10, 15, 17, 4, 0, 16, 16, 4, 9, 5, 4,
            2, 0, 0, 3, 10, 91, 9, 1, 2, 5, 15, 13, 16, 17, 3, 4, 5 };
   Integer[] minorIndexes = { 13, 12, 12, 1, 9, 12, 12, 6, 6, 12, 12, 17,
            12, 5, 12, 12, 4, 12, 9, 12, 13, 5, 17, 1, 0, 6, 9, 4, 12, 17 };
   testPacketSortType(majorIndexes, minorIndexes);
}

@Test(timeout = TIME_OUT)
public void test_many_elements_with_all_same() {
   Integer[] nums = { 1, 1, 1, 1, 1, 1 };
   testPacketSortType(nums, nums);
}

@Test(timeout = TIME_OUT)
public void test_sorting_many_elements_reverse_order() {
   Integer[] majorIndexes = { 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 };
   Integer[] minorIndexes = { 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 };
   testPacketSortType(majorIndexes, minorIndexes);
}

/**
* Testing large case for sorting
* =============================================
*
* @throws IOException
*/

@Test
public void test_image_unscramble() throws IOException {
   BufferedImage image = ImageIO.read(new File("expectedImage.jpg"));
   Random r = new Random();
   int rows = r.nextInt(ROW_RANGE) + MIN_ROWS;

   ArrayList<Packet> packetList = new ArrayList<Packet>();
   for (int row = 0; row < rows; row++) {
         int pixelsLeft = image.getWidth();
         // We will randomly split up each row into chunks.
         while (pixelsLeft > 0) {
            int nextChunkWidth = Math.min(r.nextInt(CHUNK_WIDTH_RANGE)
                     + MIN_CHUNK_WIDTH, pixelsLeft);
            pixelsLeft -= nextChunkWidth;
            packetList.add(new Packet(row, image.getWidth() - pixelsLeft));
         }
   }
   Collections.shuffle(packetList);
   Packet[] result = new Packet[packetList.size()];
   for (int i = 0; i < result.length; i++) {
         result[i] = packetList.get(i);
   }
   checkPackets(result);
}

private void testPacketSortType(Integer[] majorIndexes,
         Integer[] minorIndexes) {
   Packet[] testArray = new Packet[majorIndexes.length];
   for (int i = 0; i < majorIndexes.length; i++) {
         testArray[i] = new Packet(majorIndexes[i], minorIndexes[i]);
   }
   checkPackets(testArray);
}

Create a program that moves a randomly created shape around the scr...