/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.commons.functor.core.collection;
  
  import static org.junit.Assert.assertSame;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  import org.apache.commons.functor.BaseFunctorTest;
  import org.apache.commons.functor.Predicate;
  import org.apache.commons.functor.core.Constant;
  import org.junit.Test;
  
  /**
   * @version $Revision: 1541658 $ $Date: 2013-11-13 19:54:05 +0100 (Mi, 13 Nov 2013) $
   */
  public class TestIsElementOf extends BaseFunctorTest {
  
      // Functor Testing Framework
      // ------------------------------------------------------------------------
  
      @Override
      protected Object makeFunctor() {
          return new IsElementOf<Integer, Collection<Integer>>();
      }
  
      // Tests
      // ------------------------------------------------------------------------
  
      @Test
      public void testTestCollection() throws Exception {
          List<Integer> list = new ArrayList<Integer>();
          list.add(Integer.valueOf(5));
          list.add(Integer.valueOf(10));
          list.add(Integer.valueOf(15));
  
          Predicate<Integer> p = IsElementOf.instance(list);
          assertTrue(p.test(Integer.valueOf(5)));
          assertTrue(p.test(Integer.valueOf(10)));
          assertTrue(p.test(Integer.valueOf(15)));
  
          assertTrue(!p.test(Integer.valueOf(4)));
          assertTrue(!p.test(Integer.valueOf(11)));
  
      }
  
      @Test
      public void testTestArray() throws Exception {
          int[] list = new int[] { 5, 10, 15 };
  
          Predicate<Integer> p = IsElementOf.instance(list);
          assertTrue(p.test(Integer.valueOf(5)));
          assertTrue(p.test(Integer.valueOf(10)));
          assertTrue(p.test(Integer.valueOf(15)));
  
          assertTrue(!p.test(Integer.valueOf(4)));
          assertTrue(!p.test(Integer.valueOf(11)));
      }
  
      @Test
      public void testTestArrayWithNull() throws Exception {
          assertTrue(! IsElementOf.instance().test(null,new int[] { 5, 10, 15 }));
          assertTrue(IsElementOf.instance().test(null,new Integer[] { Integer.valueOf(5), null, Integer.valueOf(15) }));
          assertTrue(IsElementOf.instance().test(Integer.valueOf(15),new Integer[] { Integer.valueOf(5), null, Integer.valueOf(15) }));
      }
  
      @Test
      public void testWrapNull() {
          try {
              IsElementOf.instance(null);
              fail("expected NullPointerException");
          } catch (NullPointerException e) {
              // expected
          }
      }
  
      @Test
      public void testWrapNonCollection() {
          try {
              IsElementOf.instance(Integer.valueOf(3));
              fail("expected IllegalArgumentException");
         } catch (IllegalArgumentException e) {
             // expected
         }
     }
 
     @Test(expected = NullPointerException.class)
     public void testTestNull() {
         IsElementOf.instance().test(Integer.valueOf(5),null);
     }
 
     @Test
     public void testTestNonCollection() {
         try {
             IsElementOf.instance().test(Integer.valueOf(5),Long.valueOf(5));
             fail("expected IllegalArgumentException");
         } catch (IllegalArgumentException e) {
             // expected
         }
     }
 
     @Test
     public void testEquals() throws Exception {
         IsElementOf<Integer, Collection<Integer>> p1 = new IsElementOf<Integer, Collection<Integer>>();
         assertObjectsAreEqual(p1, p1);
         assertObjectsAreEqual(p1, new IsElementOf<Integer, Collection<Integer>>());
         assertObjectsAreEqual(p1, IsElementOf.instance());
         assertSame(IsElementOf.instance(), IsElementOf.instance());
         assertObjectsAreNotEqual(p1, Constant.falsePredicate());
     }
 }