git.gag.com Git - debian/openrocket/blob - core/test/net/sf/openrocket/util/SimpleStackTest.java

   1 package net.sf.openrocket.util;
   2
   3 import java.util.NoSuchElementException;
   4
   5 import static org.junit.Assert.assertEquals;
   6 import static org.junit.Assert.assertNull;
   7
   8 import org.junit.Test;
   9
  10 public class SimpleStackTest {
  11
  12         @Test(expected=NoSuchElementException.class)
  13         public void testEmptyStack() {
  14                 SimpleStack<Integer> s = new SimpleStack<Integer>();
  15
  16                 assertNull(s.peek());
  17
  18                 s.pop();
  19         }
  20
  21         @Test
  22         public void testPushAndPop() {
  23
  24                 SimpleStack<Integer> s = new SimpleStack<Integer>();
  25
  26                 for( int i = 0; i< 10; i++ ) {
  27                         s.push(i);
  28                         assertEquals(i+1, s.size());
  29                 }
  30
  31                 for( int i=9; i>= 0; i-- ) {
  32                         assertEquals( i, s.peek().intValue() );
  33                         Integer val = s.pop();
  34                         assertEquals( i, val.intValue() );
  35                         assertEquals( i, s.size() );
  36                 }
  37
  38                 assertNull( s.peek() );
  39                 assertEquals( 0, s.size() );
  40
  41         }
  42
  43 }