@Test
 public void matchWithInvalidCriteria() {
   deploymentProperties.setCount(0);
   deploymentProperties.setCriteria("color");
   Collection<Container> matched =
       containerMatcher.match(moduleDescriptor, deploymentProperties, containers);
   assertEquals(0, matched.size());
 }
 @Test
 public void matchWithCriteria() {
   deploymentProperties.setCount(0);
   deploymentProperties.setCriteria("color=='green'");
   Collection<Container> matched =
       containerMatcher.match(moduleDescriptor, deploymentProperties, containers);
   assertEquals(2, matched.size());
   Iterator<Container> matchedIterator = matched.iterator();
   assertSame(containers.get(0), matchedIterator.next());
   assertSame(containers.get(1), matchedIterator.next());
 }
  @Test
  public void matchWithCountLessThanContainersMatchingCriteria() {
    deploymentProperties.setCount(1);
    deploymentProperties.setCriteria("group=='group2'");
    Collection<Container> matched =
        containerMatcher.match(moduleDescriptor, deploymentProperties, containers);
    assertEquals(1, matched.size());
    Iterator<Container> matchedIterator = matched.iterator();
    assertSame(containers.get(1), matchedIterator.next());

    matched = containerMatcher.match(moduleDescriptor, deploymentProperties, containers);
    assertEquals(1, matched.size());
    matchedIterator = matched.iterator();
    assertSame(containers.get(2), matchedIterator.next());

    matched = containerMatcher.match(moduleDescriptor, deploymentProperties, containers);
    assertEquals(1, matched.size());
    matchedIterator = matched.iterator();
    assertSame(containers.get(1), matchedIterator.next());
  }