Princeton1/module6/src/test/java/com/hithomelabs/princeton1/module6/MergeTest.java

package com.hithomelabs.princeton1.module6;

import com.hithomelabs.princeton1.module5.ComparableSort;
import com.hithomelabs.princeton1.common.Apple;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.util.ArrayList;
import java.util.Random;

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

class MergeTest {

    private ComparableSort<Apple> sortingAlgorithm;
    private ArrayList<Apple> apples;
    private Random random;

    @BeforeEach
    void setUp() {
        apples = new ArrayList<>();
        random = new Random();
    }

    @Test
    @DisplayName("Merge Sort test client")
    public void testSort(){
        sortingAlgorithm = new Merge<Apple>();
        for(int i = 0; i < 10; i++)
            apples.add(new Apple(random.nextInt(100)));
        Apple[] arr = apples.toArray(new Apple[apples.size()]);
        apples.sort(null);
        Apple[] sorted = apples.toArray(new Apple[apples.size()]);
        sortingAlgorithm.sort(arr);
        assertArrayEquals(sorted, arr);
    }

    @AfterEach
    void tearDown() {
        sortingAlgorithm = null;
    }
}