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 JavaAttributeGroupSuite {
  
    @Test
    public void testAttributeGroup() {
      Attribute[] attrs = new Attribute[]{
        NumericAttribute.defaultAttr(),
        NominalAttribute.defaultAttr(),
        BinaryAttribute.defaultAttr().withIndex(0),
        NumericAttribute.defaultAttr().withName("age").withSparsity(0.8),
        NominalAttribute.defaultAttr().withName("size").withValues("small", "medium", "large"),
        BinaryAttribute.defaultAttr().withName("clicked").withValues("no", "yes"),
        NumericAttribute.defaultAttr(),
        NumericAttribute.defaultAttr()
      };
      AttributeGroup group = new AttributeGroup("user", attrs);
      Assert.assertEquals(8, group.size());
      Assert.assertEquals("user", group.name());
      Assert.assertEquals(NumericAttribute.defaultAttr().withIndex(0), group.getAttr(0));
      Assert.assertEquals(3, group.indexOf("age"));
      Assert.assertFalse(group.hasAttr("abc"));
      Assert.assertEquals(group, AttributeGroup.fromStructField(group.toStructField()));
    }
  }
  