/*
    * 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.io.comparator;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.Comparator;
  import java.util.List;
  
  /**
   * Test case for {@link CompositeFileComparator}.
   */
  public class CompositeFileComparatorTest extends ComparatorAbstractTestCase {
  
      /**
       * Construct a new test case with the specified name.
       *
       * @param name Name of the test
       */
      public CompositeFileComparatorTest(final String name) {
          super(name);
      }
  
      /** @see junit.framework.TestCase#setUp() */
      @Override
      protected void setUp() throws Exception {
          super.setUp();
          comparator = new CompositeFileComparator(
                  new AbstractFileComparator[] {
                      (AbstractFileComparator) SizeFileComparator.SIZE_COMPARATOR,
                      (AbstractFileComparator) ExtensionFileComparator.EXTENSION_COMPARATOR});
          reverse = new ReverseComparator(comparator);
          final File dir = getTestDirectory();
          lessFile   = new File(dir, "xyz.txt");
          equalFile1 = new File(dir, "foo.txt");
          equalFile2 = new File(dir, "bar.txt");
          moreFile   = new File(dir, "foo.xyz");
          createFile(lessFile,   32);
          createFile(equalFile1, 48);
          createFile(equalFile2, 48);
          createFile(moreFile,   48);
      }
  
      /**
       * Test Constructor with null Iterable
       */
      public void testConstructorIterable() {
          final List<Comparator<File>> list = new ArrayList<Comparator<File>>();
          list.add(SizeFileComparator.SIZE_COMPARATOR);
          list.add(ExtensionFileComparator.EXTENSION_COMPARATOR);
          final Comparator<File> c = new CompositeFileComparator(list);
  
          assertEquals("equal", 0, c.compare(equalFile1, equalFile2));
          assertTrue("less",  c.compare(lessFile, moreFile) < 0);
          assertTrue("more",  c.compare(moreFile, lessFile) > 0);
      }
  
      /**
       * Test Constructor with null Iterable
       */
      public void testConstructorIterableNull() {
          final Comparator<File> c = new CompositeFileComparator((Iterable<Comparator<File>>)null);
          assertEquals("less,more", 0, c.compare(lessFile, moreFile));
          assertEquals("more,less", 0, c.compare(moreFile, lessFile));
          assertEquals("toString", "CompositeFileComparator{}", c.toString());
      }
  
      /**
       * Test Constructor with null array
       */
      public void testConstructorArrayNull() {
          final Comparator<File> c = new CompositeFileComparator((Comparator<File>[])null);
          assertEquals("less,more", 0, c.compare(lessFile, moreFile));
          assertEquals("more,less", 0, c.compare(moreFile, lessFile));
          assertEquals("toString", "CompositeFileComparator{}", c.toString());
      }
  }