package ch.epfl.maze.tests;

import ch.epfl.maze.physical.Animal;
import ch.epfl.maze.util.Direction;
import ch.epfl.maze.util.Vector2D;
import junit.framework.TestCase;
import org.junit.Test;

import java.util.Set;

/**
 * Test case for {@code Animal} implementation.
 */
public class AnimalTest extends TestCase {

    /**
     * Test case for {@code getPosition()}.
     */
    @Test
    public void testGetPosition() {
        Animal animal = new MockAnimal(new Vector2D(2, 1));

        // checks getPosition()
        assertEquals(new Vector2D(2, 1), animal.getPosition());
    }

    /**
     * Test case for {@code setPosition(Vector2D position)}.
     */
    @Test
    public void testSetPosition() {
        Animal animal = new MockAnimal(new Vector2D(2, 1));

        // checks setPosition(Vector2D position)
        animal.setPosition(new Vector2D(3, 5));
        assertEquals(new Vector2D(3, 5), animal.getPosition());
    }

    /**
     * Test case for {@code update(Direction dir)}.
     */
    @Test
    public void testUpdate() {
        Animal animal = new MockAnimal(new Vector2D(2, 1));

        // checks update(Direction dir) with NONE
        animal.update(Direction.NONE);
        assertEquals(new Vector2D(2, 1), animal.getPosition());

        // checks update(Direction dir) with DOWN
        animal.update(Direction.DOWN);
        assertEquals(new Vector2D(2, 2), animal.getPosition());

        // checks update(Direction dir) with UP
        animal.update(Direction.UP);
        assertEquals(new Vector2D(2, 1), animal.getPosition());

        // checks update(Direction dir) with RIGHT
        animal.update(Direction.RIGHT);
        assertEquals(new Vector2D(3, 1), animal.getPosition());

        // checks update(Direction dir) with LEFT
        animal.update(Direction.LEFT);
        assertEquals(new Vector2D(2, 1), animal.getPosition());
    }

    /**
     * Mock class that makes {@code Animal} concrete.
     */
    private class MockAnimal extends Animal {

        /**
         * Creates a concrete instance of the {@code Animal} class.
         *
         * @param labyrinth Actual maze
         */
        public MockAnimal(Vector2D position) {
            super(position);
        }

        @Override
        public Direction move(Direction[] choices) {
            return null;
        }

        @Override
        public Animal copy() {
            return null;
        }
    }

}