/**
* Test suite for a simple Fibonacci number calculator; does not
* use a test harness.
*
* @author Wayne Eberly
*
*/

public class FibTest1 {

 public static void main(String[] args) {
 
  /*
  * Check evaluation of method at inputs 0-10
  */
  
  System.out.println("Test Suite for a Simple Fibonacci Method");
  System.out.println("");
 
  System.out.println("Testing evaluation at  0");
  checkValue(0, 0);
  System.out.println("");
  
  System.out.println("Testing evaluation at  1");
  checkValue(1, 1);
  System.out.println("");
  
  System.out.println("Testing evaluation at  2");
  checkValue(2, 1);
  System.out.println("");
  
  System.out.println("Testing evaluation at  3");
  checkValue(3, 2);
  System.out.println("");
  
  System.out.println("Testing evaluation at  4");
  checkValue(4, 3);
  System.out.println("");
  
  System.out.println("Testing evaluation at  5");
  checkValue(5, 5);
  System.out.println("");
  
  System.out.println("Testing evaluation at  6");
  checkValue(6, 8);
  System.out.println("");
  
  System.out.println("Testing evaluation at  7");
  checkValue(7, 13);
  System.out.println("");
  
  System.out.println("Testing evaluation at  8");
  checkValue(8, 21);
  System.out.println("");
  
  System.out.println("Testing evaluation at  9");
  checkValue(9, 34);
  System.out.println("");
  
  System.out.println("Testing evaluation at 10");
  checkValue(10, 55);
  System.out.println("");
  
  /*
  * Check evaluation when a negative input is supplied
  */
  
   System.out.println("Testing evaluation at -1");
   checkException(-1);
 
 }
 
 /*
 * The following method is not really necessary; one could simply
 * refer to "Fibonacci1.fib" instead of "fib" throughout the main
 * method. It is included as a convenience to simplify the modification
 * of this test suite to test other classes (like Fibonacci2) that
 * also provide a "fib" method
 */

 private static long fib (int i ) {
  return Fibonacci1.fib(i);
 }
 
 
 /*
 * This method checks to see whether the Fibonacci method
 * returns the second input value when the first is supplied
 * as its input and displays an appropriate report.
 */
 
 private static void checkValue ( int i, long v) {
 
   try {
     if ( fib(i) == v ) {
       System.out.println("SUCCESS: Expected Value was Generated.");
     } else {
       System.out.println("FAILURE: Expected Value was Not Generated.");
     };
   }
   catch (IllegalArgumentException ex) {
     System.out.println("FAILURE: Unexpected Exception was Thrown.");
   };
 }
 
 /*
 * This final method checks to see whether the Fibonacci method
 * throws an exception (as expected) and displays an appropriate
 * report
 */
 
 private static void checkException ( int i ) {
 
   try {
     fib(i);
     System.out.println("FAILURE: Expected exception was not Thown.");
   }
   catch (IllegalArgumentException ex) {
     System.out.println("SUCCESS: Expected exception was Thrown.");
   };
 
 }

}