/*
* 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.mahout.math;
import java.util.Collection;
import java.util.List;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import org.apache.mahout.math.function.DoubleDoubleFunction;
import org.apache.mahout.math.function.Functions;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import static org.junit.Assert.assertEquals;
@RunWith(Parameterized.class)
public final class VectorBinaryAssignTest {
private static final int CARDINALITY = 10;
private DoubleDoubleFunction function;
private VectorBinaryAssign operation;
@SuppressWarnings("unchecked")
@Parameterized.Parameters
public static Collection<Object[]> generateData() {
List<Object[]> data = Lists.newArrayList();
for (List entry : Sets.cartesianProduct(Lists.newArrayList(
ImmutableSet.of(Functions.PLUS, Functions.PLUS_ABS, Functions.MULT, Functions.MULT_RIGHT_PLUS1,
Functions.MINUS),
ImmutableSet.copyOf(VectorBinaryAssign.OPERATIONS)))) {
data.add(entry.toArray());
}
return data;
}
public VectorBinaryAssignTest(DoubleDoubleFunction function, VectorBinaryAssign operation) {
this.function = function;
this.operation = operation;
}
@Test
public void testAll() {
SequentialAccessSparseVector x = new SequentialAccessSparseVector(CARDINALITY);
for (int i = 0; i < x.size(); ++i) {
x.setQuick(i, i);
}
SequentialAccessSparseVector y = new SequentialAccessSparseVector(x);
System.out.printf("function %s; operation %s\n", function, operation);
operation.assign(x, y, function);
for (int i = 0; i < x.size(); ++i) {
assertEquals(x.getQuick(i), function.apply(i, i), 0.0);
}
}
}