package com.github.pedrovgs.problem74;

import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.assertArrayEquals;

/**
 * @author Pedro Vicente Gómez Sánchez.
 */
public class BubbleSortTest {

  private BubbleSort bubbleSort;

  @Before public void setUp() {
    bubbleSort = new BubbleSort();
  }

  @Test(expected = IllegalArgumentException.class) public void shouldNotAcceptNullArrays() {
    bubbleSort.sort(null);
  }

  @Test public void shouldNotModifyArrayIfIsAlreadySorted() {
    int[] input = { 1, 2, 3, 4 };

    bubbleSort.sort(input);

    int[] expectedArray = { 1, 2, 3, 4 };
    assertArrayEquals(expectedArray, input);
  }

  @Test public void shouldSortArrayWhenTheInputDataIsInDescendingOrder() {
    int[] input = { 4, 3, 2, 1 };

    bubbleSort.sort(input);

    int[] expectedArray = { 1, 2, 3, 4 };
    assertArrayEquals(expectedArray, input);
  }

  @Test public void shouldSortArrayPartiallySorted() {
    int[] input = { 1, 2, 4, 3 };

    bubbleSort.sort(input);

    int[] expectedArray = { 1, 2, 3, 4 };
    assertArrayEquals(expectedArray, input);
  }

  @Test public void shouldSortArray() {
    int[] input = { 3, 4, 1, 2 };

    bubbleSort.sort(input);

    int[] expectedArray = { 1, 2, 3, 4 };
    assertArrayEquals(expectedArray, input);
  }
}

/*
 * Copyright (C) 2014 Pedro Vicente Gómez Sánchez.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.pedrovgs.problem74;

import com.github.pedrovgs.sortingalgorithm.SortingAlgorithm;
import com.github.pedrovgs.sortingalgorithms.SortingAlgorithmTest;

/**
 * @author Pedro Vicente Gómez Sánchez.
 */
public class BubbleSortTest extends SortingAlgorithmTest {

  @Override public SortingAlgorithm getSortingAlgorithm() {
    return new BubbleSort();
  }
}

Modify BubbleSortTest to extend from SortingAlgorithm test