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

/**
* Test suite for a simple Fibonacci number calculator; requires
* Junit 4.x.
*
* @author Wayne Eberly
*
*/

public class FibTest2 {

 /*
 * The following method is not really necessary:
 * One could simply refer to "Fibonacci1.fib" instead
 * of "fib" in all the tests that appear below.
 * This is included as a courtesy in case you wish
 * to modify this test suite quickly, in order to
 * test other classes (like Fibonacci2) that also
 * provide a "fib" method
 */

 private static long fib (int i ) {
  return Fibonacci1.fib(i);
 };
 
 /*
 * Initial tests check that the method returns the
 * expected values at inputs 0-10
 */


 @Test
 public void testZero () {
  System.out.println("Testing evaluation at  0");
  assertEquals(0, fib(0));
 }

 @Test
 public void testOne () {
  System.out.println("Testing evaluation at  1");
  assertEquals(1, fib(1));
 }

 @Test
 public void testTwo () {
  System.out.println("Testing evaluation at  2");
  assertEquals(1, fib(2));
 }

 @Test
 public void testThree () {
  System.out.println("Testing evaluation at  3");
  assertEquals(2, fib(3));
 }

 @Test
 public void testFour () {
  System.out.println("Testing evaluation at  4");
  assertEquals(3, fib(4));
 }

 @Test
 public void testFive () {
  System.out.println("Testing evaluation at  5");
  assertEquals(5, fib(5));
 }

 @Test
 public void testSix () {
  System.out.println("Testing evaluation at  6");
  assertEquals(8, fib(6));
 }

 @Test
 public void testSeven () {
  System.out.println("Testing evaluation at  7");
  assertEquals(13, fib(7));
 }

 @Test
 public void testEight () {
  System.out.println("Testing evaluation at  8");
  assertEquals(21, fib(8));
 }

 @Test
 public void testNine () {
  System.out.println("Testing evaluation at  9");
  assertEquals(34, fib(9));
 }

 @Test
 public void testTen () {
  System.out.println("Testing evaluation at 10");
  assertEquals(55, fib(10));
 }
 
 /*
 * The final test checks whether the method throws
 * the expected exception when on input -1
 */

 @Test (expected = IllegalArgumentException.class)
 public void testNegative () {
  System.out.println("Testing evaluation at -1");
  fib(-1);
 }


}