RotatorTest.java

package com.michaelmidura.kataday.day025;

import static org.junit.Assert.*;

import org.junit.*;

public class RotatorTest {
	private Rotator rotator;

	@Before
	public void setUp() {
		this.rotator = new Rotator();
	}

	@After
	public void tearDown() {
		this.rotator = null;
	}

	@Test
	public void testRotateOne_ArrayOfFive() {
		assertArrayEquals(new Object[]{5, 1, 2, 3, 4}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, 1));
	}

	@Test
	public void testRotateTwo_ArrayOfFive() {
		assertArrayEquals(new Object[]{4, 5, 1, 2, 3}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, 2));
	}

	@Test
	public void testRotateThree_ArrayOfFive() {
		assertArrayEquals(new Object[]{3, 4, 5, 1, 2}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, 3));
	}

	@Test
	public void testRotateFour_ArrayOfFive() {
		assertArrayEquals(new Object[]{2, 3, 4, 5, 1}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, 4));
	}

	@Test
	public void testRotateFive_ArrayOfFive() {
		assertArrayEquals(new Object[]{1, 2, 3, 4, 5}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, 5));
	}

	@Test
	public void testRotateSix_ArrayOfFive() {
		assertArrayEquals(new Object[]{5, 1, 2, 3, 4}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, 6));
	}

	@Test
	public void testRotateNegOne_ArrayOfFive() {
		assertArrayEquals(new Object[]{2, 3, 4, 5, 1}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, -1));
	}

	@Test
	public void testRotateNegTwo_ArrayOfFive() {
		assertArrayEquals(new Object[]{3, 4, 5, 1, 2}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, -2));
	}

	@Test
	public void testRotateNegThree_ArrayOfFive() {
		assertArrayEquals(new Object[]{4, 5, 1, 2, 3}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, -3));
	}

	@Test
	public void testRotateNegFour_ArrayOfFive() {
		assertArrayEquals(new Object[]{5, 1, 2, 3, 4}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, -4));
	}

	@Test
	public void testRotateNegFive_ArrayOfFive() {
		assertArrayEquals(new Object[]{1, 2, 3, 4, 5}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, -5));
	}

	@Test
	public void testRotateNegSix_ArrayOfFive() {
		assertArrayEquals(new Object[]{2, 3, 4, 5, 1}, rotator.rotate(new Object[]{1, 2, 3, 4, 5}, -6));
	}
}