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.ml.attribute;
  
  import org.junit.Assert;
  import org.junit.Test;
  
  public class JavaAttributeSuite {
  
    @Test
    public void testAttributeType() {
      AttributeType numericType = AttributeType.Numeric();
      AttributeType nominalType = AttributeType.Nominal();
      AttributeType binaryType = AttributeType.Binary();
      Assert.assertEquals(numericType, NumericAttribute.defaultAttr().attrType());
      Assert.assertEquals(nominalType, NominalAttribute.defaultAttr().attrType());
      Assert.assertEquals(binaryType, BinaryAttribute.defaultAttr().attrType());
    }
  
    @Test
    public void testNumericAttribute() {
      NumericAttribute attr = NumericAttribute.defaultAttr()
        .withName("age").withIndex(0).withMin(0.0).withMax(1.0).withStd(0.5).withSparsity(0.4);
      Assert.assertEquals(attr.withoutIndex(), Attribute.fromStructField(attr.toStructField()));
    }
  
    @Test
    public void testNominalAttribute() {
      NominalAttribute attr = NominalAttribute.defaultAttr()
        .withName("size").withIndex(1).withValues("small", "medium", "large");
      Assert.assertEquals(attr.withoutIndex(), Attribute.fromStructField(attr.toStructField()));
    }
  
    @Test
    public void testBinaryAttribute() {
      BinaryAttribute attr = BinaryAttribute.defaultAttr()
        .withName("clicked").withIndex(2).withValues("no", "yes");
      Assert.assertEquals(attr.withoutIndex(), Attribute.fromStructField(attr.toStructField()));
    }
  }
  