Commons IO example source code file (CompositeFileComparatorTest.java)

This example Commons IO source code file (CompositeFileComparatorTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons IO tags/keywords

arraylist, comparator, comparator, comparatorabstracttestcase, compositefilecomparator, compositefilecomparator, compositefilecomparatortest, compositefilecomparatortest, exception, file, file, io, list, override, reversecomparator, util

The Commons IO CompositeFileComparatorTest.java source code

/*
 * 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(String name) {
        super(name);
    }

    /** @see junit.framework.TestCase#setUp() */
    @Override
    protected void setUp() throws Exception {
        super.setUp();
        comparator = new CompositeFileComparator(SizeFileComparator.SIZE_COMPARATOR,
                                                 ExtensionFileComparator.EXTENSION_COMPARATOR);
        reverse = new ReverseComparator(comparator);
        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() {
        List<Comparator list = new ArrayList>();
        list.add(SizeFileComparator.SIZE_COMPARATOR);
        list.add(ExtensionFileComparator.EXTENSION_COMPARATOR);
        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() {
        Comparator<File> c = new CompositeFileComparator((Iterable>)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() {
        Comparator<File> c = new CompositeFileComparator((Comparator[])null);
        assertEquals("less,more", 0, c.compare(lessFile, moreFile));
        assertEquals("more,less", 0, c.compare(moreFile, lessFile));
        assertEquals("toString", "CompositeFileComparator{}", c.toString());
    }
}