/*
* 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.giraph.aggregators.matrix.dense;
import org.apache.giraph.aggregators.matrix.dense.IntDenseVector;
import static org.junit.Assert.assertEquals;
import org.apache.giraph.utils.WritableUtils;
import org.junit.Test;
public class TestIntDenseMatrix {
@Test
public void testVectorSingleton() {
IntDenseVector vec1 = new IntDenseVector(10);
vec1.set(0, 0);
vec1.set(6, 14);
IntDenseVector vec2 = new IntDenseVector();
vec2.setSingleton(6, 10);
vec1.add(vec2);
assertEquals(24, vec1.get(6));
vec2.setSingleton(15, 15);
vec1.add(vec2);
assertEquals(15, vec1.get(15));
}
@Test
public void testVectorAdd() {
// The default value should be 0
IntDenseVector vec1 = new IntDenseVector(10);
assertEquals(0, vec1.get(0));
// Basic get/set
vec1.set(0, 1);
vec1.set(6, 14);
assertEquals(1, vec1.get(0));
assertEquals(0, vec1.get(4));
assertEquals(14, vec1.get(6));
assertEquals(0, vec1.get(15));
// Add another vector
IntDenseVector vec2 = new IntDenseVector(20);
vec2.set(0, 5);
vec2.set(5, 17);
vec1.add(vec2);
assertEquals(6, vec1.get(0));
assertEquals(17, vec1.get(5));
assertEquals(14, vec1.get(6));
assertEquals(0, vec1.get(15));
}
@Test
public void testVectorSerialize() throws Exception {
int size = 100;
// Serialize from
IntDenseVector from = new IntDenseVector(size);
from.set(0, 100);
from.set(10, 50);
from.set(12, 10);
byte[] data = WritableUtils.writeToByteArray(from, from);
// De-serialize to
IntDenseVector to1 = new IntDenseVector();
IntDenseVector to2 = new IntDenseVector();
WritableUtils.readFieldsFromByteArray(data, to1, to2);
// The vectors should be equal
for (int i = 0; i < size; ++i) {
assertEquals(from.get(i), to1.get(i));
assertEquals(from.get(i), to2.get(i));
}
}
@Test
public void testVectorSerializeSingleton() throws Exception {
IntDenseVector from = new IntDenseVector();
from.setSingleton(3, 100);
byte[] data = WritableUtils.writeToByteArray(from, from);
IntDenseVector to1 = new IntDenseVector();
IntDenseVector to2 = new IntDenseVector();
WritableUtils.readFieldsFromByteArray(data, to1, to2);
assertEquals(from.getSingletonIndex(), to1.getSingletonIndex());
assertEquals(from.getSingletonIndex(), to2.getSingletonIndex());
assertEquals(from.getSingletonValue(), to2.getSingletonValue());
assertEquals(from.getSingletonValue(), to2.getSingletonValue());
}
}