/*
* 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 hivemall.knn.distance;
import java.util.Arrays;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
public class EuclidDistanceUDFTest {
@Test
public void test1() {
List<String> ftvec1 = Arrays.asList("1:1.0", "2:2.0", "3:3.0");
List<String> ftvec2 = Arrays.asList("1:2.0", "2:4.0", "3:6.0");
double d = EuclidDistanceUDF.euclidDistance(ftvec1, ftvec2);
Assert.assertEquals(Math.sqrt(1.0 + 4.0 + 9.0), d, 0.f);
}
@Test
public void test2() {
List<String> ftvec1 = Arrays.asList("1:1.0", "2:3.0", "3:3.0");
List<String> ftvec2 = Arrays.asList("1:2.0", "3:6.0");
double d = EuclidDistanceUDF.euclidDistance(ftvec1, ftvec2);
Assert.assertEquals(Math.sqrt(1.0 + 9.0 + 9.0), d, 0.f);
}
}