content: /*
   *  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.causeway.core.metamodel.facets;
  
  import java.util.AbstractList;
  import java.util.AbstractSet;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.HashSet;
  import java.util.LinkedHashSet;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import java.util.SortedSet;
  import java.util.TreeSet;
  import java.util.concurrent.CopyOnWriteArrayList;
  import java.util.concurrent.CopyOnWriteArraySet;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.CoreMatchers.not;
  import static org.hamcrest.CoreMatchers.nullValue;
  import static org.hamcrest.MatcherAssert.assertThat;
  
  import org.apache.causeway.core.metamodel.facets.collections.CollectionFacet;
  
  class CollectionFacetUtilsTest {
  
      List<Object> iterable;
  
      @BeforeEach
      void setUp() throws Exception {
          iterable = Arrays.<Object>asList("a", "b", "c");
      }
  
      @Test
      void whenLinkedList() throws Exception {
  
          List<Class<?>> collectionTypes = List.<Class<?>>of(
                  LinkedList.class,
                  ArrayList.class,
                  CopyOnWriteArrayList.class,
                  AbstractList.class,
                  LinkedHashSet.class,
                  HashSet.class,
                  TreeSet.class,
                  CopyOnWriteArraySet.class,
                  AbstractSet.class,
                  List.class,
                  SortedSet.class,
                  Set.class,
                  Collection.class
                  );
          for (Class<?> collectionType : collectionTypes) {
              Object o = CollectionFacet.AutofitUtils.collect(iterable.stream(), collectionType);
              assertThat(o, is(not(nullValue())));
              assertThat(collectionType.isAssignableFrom(o.getClass()), is(true));
  
              @SuppressWarnings("rawtypes")
              Collection copy = (Collection)o;
              assertThat(copy.size(), is(3));
          }
  
      }
  
      @Test
      void whenArray() throws Exception {
          Object o = CollectionFacet.AutofitUtils.collect(iterable.stream(), String[].class);
          assertThat(o instanceof String[], is(true));
  
          String[] copy = (String[])o;
          assertThat(copy.length, is(3));
      }
  
      @Test
      void whenNotSupported() throws Exception {
          Object o = CollectionFacet.AutofitUtils.collect(iterable.stream(), Map.class);
          assertThat(o, is(nullValue()));
      }
  
      @Test
      void whenRequiredTypeIsNull() throws Exception {
  
          Assertions.assertThrows(NullPointerException.class, ()->
              CollectionFacet.AutofitUtils.collect(iterable.stream(), null));
      }
  
      @Test
      void whenIterableIsNull() throws Exception {
  
          Assertions.assertThrows(NullPointerException.class, ()->
              CollectionFacet.AutofitUtils.collect(null, List.class));
      }
  
  }
  