Android example source code file (HashSetTest.java)

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

Java - Android tags/keywords

android, exception, hashset, hashsettest, integer, iterations, iterator, object, override, performancetestbase, suppresswarnings, test, util

The HashSetTest.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * 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 android.core;

import android.test.PerformanceTestBase;
import android.test.PerformanceTestCase;

import java.util.HashSet;
import java.util.Iterator;

/**
 * Implements basic performance test functionality for HashSets
 */

public class HashSetTest extends PerformanceTestBase {
    public static final int ITERATIONS = 1000;
    public static HashSet<Integer> sSet;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        sSet = new HashSet<Integer>();
        for (int i = ITERATIONS - 1; i >= 0; i--) {
            sSet.add(i);
        }
    }

    @Override
    public int startPerformance(PerformanceTestCase.Intermediates intermediates) {
        intermediates.setInternalIterations(ITERATIONS);
        return 0;
    }

    /**
     * 
     * Tests performance for the HashSet method Add(Object arg 0)
     * 
     */

    @SuppressWarnings("unchecked")
    public void testHashSetAdd() {
        HashSet set = new HashSet();
        for (int i = ITERATIONS - 1; i >= 0; i--) {
            set.add(i);
            set.add(i);
            set.add(i);
            set.add(i);
            set.add(i);
            set.add(i);
            set.add(i);
            set.add(i);
            set.add(i);
            set.add(i);
        }

    }

    /**
     * 
     * Tests performance of HashSet method contains(Object arg 0)
     * 
     */

    public void testHashSetContains() {
        Integer index = new Integer(500);
        boolean flag;
        HashSet set = sSet;
        for (int i = ITERATIONS - 1; i >= 0; i--) {
            flag = set.contains(index);
            flag = set.contains(index);
            flag = set.contains(index);
            flag = set.contains(index);
            flag = set.contains(index);
            flag = set.contains(index);
            flag = set.contains(index);
            flag = set.contains(index);
            flag = set.contains(index);
        }
    }

    /**
     * 
     * Tests performance of HashSet method size()
     * 
     */

    public void testHashSetSize() {
        int num;
        HashSet set = sSet;
        for (int i = ITERATIONS - 1; i >= 0; i--) {
            num = set.size();
            num = set.size();
            num = set.size();
            num = set.size();
            num = set.size();
            num = set.size();
            num = set.size();
            num = set.size();
            num = set.size();
        }
    }

    /**
     * 
     * Tests performance of the HashSet method -iterator()
     * 
     */

    public void testHashSetIterator() {
        Iterator iterator;
        HashSet set = sSet;
        for (int i = ITERATIONS - 1; i >= 0; i--) {
            iterator = set.iterator();
            iterator = set.iterator();
            iterator = set.iterator();
            iterator = set.iterator();
            iterator = set.iterator();
            iterator = set.iterator();
            iterator = set.iterator();
            iterator = set.iterator();
            iterator = set.iterator();
        }
    }

    /**
     * 
     * Tests performance for the HashSet method Remove(Object arg 0)
     * 
     */

    @SuppressWarnings("unchecked")
    public void testHashSetRemove() {
        HashSet set = new HashSet(sSet);
        for (int i = ITERATIONS - 1; i >= 0; i--) {
            set.remove(i);
            set.remove(i);
            set.remove(i);
            set.remove(i);
            set.remove(i);
            set.remove(i);
            set.remove(i);
            set.remove(i);
            set.remove(i);
            set.remove(i);
        }
    }

    /**
     * 
     * Tests performance for the HashSet method isEmpty(Object arg 0)
     * 
     */

    public void testHashSetIsEmpty() {
        HashSet set = sSet;
        boolean flag;
        for (int i = ITERATIONS - 1; i >= 0; i--) {
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
            flag = set.isEmpty();
        }
    }

    /**
     * 
     * Tests performance for the HashSet method clone()
     * 
     */

    public void testHashSetClone() {
        HashSet hSet = sSet;
        Object set;
        for (int i = ITERATIONS - 1; i > 0; i--) {
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
            set = hSet.clone();
        }
    }
}