Catch exception in your test case : Exception « JUnit « Java Tutorial

1. Java Tutorial
2. JUnit
3. Exception

import junit.framework.TestCase;

public class TestLargest extends TestCase {
  public TestLargest(String name) {
    super(name);
  }

  public void testEmpty() {
    try {
      Largest.largest(new int[] {});
      fail("Should have thrown an exception");
    } catch (RuntimeException e) {
      assertTrue(true);
    }
  }



}

class Largest {

  /**
   * Return the largest element in a list.
   * 
   * @param list
   *            A list of integers
   * @return The largest number in the given list
   */
  public static int largest(int[] list) {
    int index, max = Integer.MAX_VALUE;
    for (index = 0; index < list.length - 1; index++) {
      if (list[index] > max) {
        max = list[index];
      }
    }
    return max;
  }

}