ArrayTests.java

import static org.junit.Assert.*;
import org.junit.*;

public class ArrayTests {
	@Test 
	public void testReverseInPlace() {
    int[] input1 = { 3 };
    int[] input2 = {};
    int[] input3 = {1, 2, 3};
    int[] input4 = {1, 2, 3, 4};
    ArrayExamples.reverseInPlace(input1);
    ArrayExamples.reverseInPlace(input2);
    ArrayExamples.reverseInPlace(input3);
    ArrayExamples.reverseInPlace(input4);
    assertArrayEquals(new int[]{ 3 }, input1);
    assertArrayEquals(new int[]{}, input2);
    assertArrayEquals(new int[]{3, 2, 1}, input3);
    assertArrayEquals(new int[]{4, 3, 2, 1}, input4);
	}


  @Test
  public void testReversed() {
    int[] input1 = { };
    int[] input2 = {1, 2, 3};
    int[] input3 = {1, 2, 3, 4};
    assertArrayEquals(new int[]{ }, ArrayExamples.reversed(input1));
    assertArrayEquals(new int[]{3, 2, 1}, ArrayExamples.reversed(input2));
    assertArrayEquals(new int[]{4, 3, 2, 1}, ArrayExamples.reversed(input3));
  }
  @Test
  public void testAverageWithoutLowest(){
    double[] input = {1.0, 2.0, 3.0, 4.0};
    double[] input1 = {};
    assertEquals(3.0, ArrayExamples.averageWithoutLowest(input), 0.000001);
    assertEquals(0.0, ArrayExamples.averageWithoutLowest(input1), 0.000001);
  }

}