/*
* Cloud9: A MapReduce Library for Hadoop
*
* 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 edu.umd.cloud9.util.map;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.Random;
import junit.framework.JUnit4TestAdapter;
import org.junit.Test;
import edu.umd.cloud9.util.map.HMapID;
import edu.umd.cloud9.util.map.MapID;
import edu.umd.cloud9.util.map.MapID.Entry;
public class HMapIDTest {
@Test
public void testBasic1() {
int size = 100000;
Random r = new Random();
double[] doubles = new double[size];
MapID map = new HMapID();
for (int i = 0; i < size; i++) {
int k = r.nextInt(size);
map.put(i, k + 0.1);
doubles[i] = k + 0.1;
}
for (int i = 0; i < size; i++) {
double v = map.get(i);
assertEquals(doubles[i], v, 0.0);
assertTrue(map.containsKey(i));
}
}
@Test
public void testUpdate() {
int size = 100000;
Random r = new Random();
double[] doubles = new double[size];
MapID map = new HMapID();
for (int i = 0; i < size; i++) {
int k = r.nextInt(size);
map.put(i, k + 0.1);
doubles[i] = k + 0.1;
}
assertEquals(size, map.size());
for (int i = 0; i < size; i++) {
map.put(i, doubles[i] + 1.0);
}
assertEquals(size, map.size());
for (int i = 0; i < size; i++) {
double v = map.get(i);
assertEquals(doubles[i] + 1.0, v, 0.0);
assertTrue(map.containsKey(i));
}
}
@Test
public void testBasic() throws IOException {
HMapID m = new HMapID();
m.put(1, 5.0);
m.put(2, 22.0);
double value;
assertEquals(m.size(), 2);
value = m.get(1);
assertTrue(value == 5.0);
value = m.remove(1);
assertEquals(m.size(), 1);
value = m.get(2);
assertTrue(value == 22.0);
}
@Test
public void testPlus() throws IOException {
HMapID m1 = new HMapID();
m1.put(1, 5.0);
m1.put(2, 22.0);
HMapID m2 = new HMapID();
m2.put(1, 4.0);
m2.put(3, 5.0);
m1.plus(m2);
assertEquals(m1.size(), 3);
assertTrue(m1.get(1) == 9);
assertTrue(m1.get(2) == 22);
assertTrue(m1.get(3) == 5);
}
@Test
public void testDot() throws IOException {
HMapID m1 = new HMapID();
m1.put(1, 2.3);
m1.put(2, 1.9);
m1.put(3, 3.0);
HMapID m2 = new HMapID();
m2.put(1, 1.2);
m2.put(2, 4.3);
m2.put(4, 5.0);
double s = m1.dot(m2);
assertTrue(s == 10.93);
}
@Test
public void testLengthAndNormalize() throws IOException {
HMapID m1 = new HMapID();
m1.put(1, 2.3);
m1.put(2, 1.9);
m1.put(3, 3.0);
assertEquals(m1.length(), 4.2308393, 10E-6);
m1.normalize();
assertEquals(m1.get(1), 0.5436274, 10E-6);
assertEquals(m1.get(2), 0.44908348, 10E-6);
assertEquals(m1.get(3), 0.70907915, 10E-6);
assertEquals(m1.length(), 1, 10E-6);
HMapID m2 = new HMapID();
m2.put(1, 1.2);
m2.put(2, 4.3);
m2.put(3, 5.0);
assertEquals(m2.length(), 6.7029843, 10E-6);
m2.normalize();
assertEquals(m2.get(1), 0.17902474, 10E-6);
assertEquals(m2.get(2), 0.64150536, 10E-6);
assertEquals(m2.get(3), 0.7459364, 10E-6);
assertEquals(m2.length(), 1, 10E-6);
}
@Test
public void testSortedEntries1() {
HMapID m = new HMapID();
m.put(1, 5.0);
m.put(2, 2.0);
m.put(3, 3.0);
m.put(4, 3.0);
m.put(5, 1.0);
Entry[] e = m.getEntriesSortedByValue();
assertEquals(5, e.length);
assertEquals(1, e[0].getKey());
assertEquals(5.0, e[0].getValue(), 10E-6);
assertEquals(3, e[1].getKey());
assertEquals(3.0, e[1].getValue(), 10E-6);
assertEquals(4, e[2].getKey());
assertEquals(3.0, e[2].getValue(), 10E-6);
assertEquals(2, e[3].getKey());
assertEquals(2.0, e[3].getValue(), 10E-6);
assertEquals(5, e[4].getKey());
assertEquals(1.0, e[4].getValue(), 10E-6);
}
@Test
public void testSortedEntries2() {
HMapID m = new HMapID();
m.put(1, 5.0);
m.put(2, 2.0);
m.put(3, 3.0);
m.put(4, 3.0);
m.put(5, 1.0);
Entry[] e = m.getEntriesSortedByValue(2);
assertEquals(2, e.length);
assertEquals(1, e[0].getKey());
assertEquals(5.0, e[0].getValue(), 10E-6);
assertEquals(3, e[1].getKey());
assertEquals(3.0, e[1].getValue(), 10E-6);
}
@Test
public void testSortedEntries3() {
HMapID m = new HMapID();
m.put(1, 5.0);
m.put(2, 2.0);
Entry[] e = m.getEntriesSortedByValue(5);
assertEquals(2, e.length);
assertEquals(1, e[0].getKey());
assertEquals(5.0, e[0].getValue(), 10E-6);
assertEquals(2, e[1].getKey());
assertEquals(2.0, e[1].getValue(), 10E-6);
}
@Test
public void testSortedEntries4() {
HMapID m = new HMapID();
Entry[] e = m.getEntriesSortedByValue();
assertTrue(e == null);
}
@Test
public void testIncrement() {
HMapID m = new HMapID();
assertEquals(0.0, m.get(1), 10E-6);
m.increment(1, 0.5);
assertEquals(0.5, m.get(1), 10E-6);
m.increment(1, 1.0);
m.increment(2, 0.0);
m.increment(3, -0.5);
assertEquals(1.5, m.get(1), 10E-6);
assertEquals(0.0, m.get(2), 10E-6);
assertEquals(-0.5, m.get(3), 10E-6);
}
public static junit.framework.Test suite() {
return new JUnit4TestAdapter(HMapIDTest.class);
}
}