content: /*
   * 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.spark.mllib.linalg;
  
  import java.util.Arrays;
  
  import static org.junit.Assert.assertArrayEquals;
  
  import scala.Tuple2;
  
  import org.junit.Test;
  
  public class JavaVectorsSuite {
  
    @Test
    public void denseArrayConstruction() {
      Vector v = Vectors.dense(1.0, 2.0, 3.0);
      assertArrayEquals(new double[]{1.0, 2.0, 3.0}, v.toArray(), 0.0);
    }
  
    @Test
    public void sparseArrayConstruction() {
      @SuppressWarnings("unchecked")
      Vector v = Vectors.sparse(3, Arrays.asList(
        new Tuple2<>(0, 2.0),
        new Tuple2<>(2, 3.0)));
      assertArrayEquals(new double[]{2.0, 0.0, 3.0}, v.toArray(), 0.0);
    }
  }
  