com.google.gwt.emultest.java.util.ComparatorTest.java Source code

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Here is the source code for com.google.gwt.emultest.java.util.ComparatorTest.java

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/*
 * Copyright 2007 Google Inc.
 * 
 * Licensed 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 com.google.gwt.emultest.java.util;

import org.apache.commons.collections.TestComparator;

import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

/**
 * TODO: document me.
 */
public class ComparatorTest extends TestComparator {
    @Override
    public Comparator<Object> makeComparator() {
        return new DummyComparator();
    }

    @Override
    public List<Object> getComparableObjectsOrdered() {
        List<Object> l = new ArrayList<Object>();
        l.add("x");
        l.add("y");
        l.add("z");
        return l;
    }
}

/**
 * List comparator for testing.
 */
class DummyComparator implements Comparator<Object> {
    /**
     * Compares returns reverse hash order.
     */
    @Override
    public int compare(Object arg0, Object arg1) {
        int a = arg0.hashCode();
        int b = arg1.hashCode();
        int accum;
        if (a == b) {
            accum = 0;
        } else if (a > b) {
            accum = 1;
        } else {
            accum = -1;
        }
        return accum;
    }
}