Exemple #1
0
 /**
  * Tests hist() method.
  *
  * @author chuna
  */
 @SuppressWarnings("serial")
 @Test
 public void testHist() {
   Calculator.clear();
   String expectedAns = "There is no history to display.";
   assert (Calculator.hist().equals(expectedAns));
   List<Integer> l =
       new ArrayList<Integer>() {
         {
           add(10);
           add(5);
           add(2);
         }
       };
   Calculator.add(l);
   Calculator.sub(l);
   Calculator.mult(l);
   try {
     Calculator.div(l);
   } catch (Exception e) {
     assert (false);
   }
   expectedAns =
       "1 | div | 10 5 2 | 1\n"
           + "2 | mult | 10 5 2 | 100\n"
           + "3 | sub | 10 5 2 | 3\n"
           + "4 | add | 10 5 2 | 17";
   assert (Calculator.hist().equals(expectedAns));
 }