/**
  * Test method for {@link
  * com.easy.common.collections.CollectionHelper#containsAny(java.util.Collection,
  * java.util.Collection)} .
  */
 @Test
 public void testContainsAny() {
   list.add("1");
   list.add("2");
   list2.add("1");
   list2.add("4");
   Assert.assertTrue(CollectionHelper.containsAny(list, list2));
   list2.remove("1");
   Assert.assertFalse(CollectionHelper.containsAny(list, list2));
 }
 /**
  * Test method for {@link
  * com.easy.common.collections.CollectionHelper#subtract(java.util.Collection,
  * java.util.Collection)} .
  */
 @Test
 public void testSubtract() {
   list.add("1");
   list.add("2");
   list2.add("2");
   Assert.assertEquals(1, CollectionHelper.subtract(list, list2).size());
 }
 /**
  * Test method for {@link com.easy.common.collections.CollectionHelper#union(java.util.Collection,
  * java.util.Collection)} .
  */
 @Test
 public void testUnion() {
   list.add("1");
   list.add("2");
   list2.add("3");
   list2.add("4");
   Assert.assertEquals(4, CollectionHelper.union(list, list2).size());
 }
 /**
  * Test method for {@link
  * com.easy.common.collections.CollectionHelper#isEqual(java.util.Collection,
  * java.util.Collection)} .
  */
 @Test
 public void testIsEqual() {
   list.add("1");
   list.add("2");
   list2.add("1");
   list2.add("2");
   Assert.assertTrue(CollectionHelper.isEqual(list, list2));
 }
 /** Test method for {@link com.easy.common.collections.CollectionHelper#size(K[])}. */
 @Test
 public void testSizeKArray() {
   Assert.assertEquals(4, CollectionHelper.size(1, 2, 3, 4));
 }
 /**
  * Test method for {@link com.easy.common.collections.CollectionHelper#last(java.util.Collection)}
  * .
  */
 @Test
 public void testLastCollectionOfQ() {
   list.add("1");
   list.add("2");
   Assert.assertEquals("2", CollectionHelper.last(list));
 }
 /**
  * Test method for {@link
  * com.easy.common.collections.CollectionHelper#isEmpty(java.util.Collection)} .
  */
 @Test
 public void testIsEmpty() {
   Assert.assertTrue(CollectionHelper.isEmpty(list));
 }
 /**
  * Test method for {@link
  * com.easy.common.collections.CollectionHelper#isNotBlank(java.util.Collection)} .
  */
 @Test
 public void testIsNotBlank() {
   Assert.assertFalse(CollectionHelper.isNotBlank(list));
 }