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.feature;
  
  import java.util.Arrays;
  import java.util.List;
  
  import org.junit.Assert;
  import org.junit.Test;
  
  import org.apache.spark.SharedSparkSession;
  import org.apache.spark.api.java.JavaRDD;
  import org.apache.spark.sql.Dataset;
  import org.apache.spark.sql.Row;
  
  public class JavaTokenizerSuite extends SharedSparkSession {
  
    @Test
    public void regexTokenizer() {
      RegexTokenizer myRegExTokenizer = new RegexTokenizer()
        .setInputCol("rawText")
        .setOutputCol("tokens")
        .setPattern("\\s")
        .setGaps(true)
        .setToLowercase(false)
        .setMinTokenLength(3);
  
  
      JavaRDD<TokenizerTestData> rdd = jsc.parallelize(Arrays.asList(
        new TokenizerTestData("Test of tok.", new String[]{"Test", "tok."}),
        new TokenizerTestData("Te,st.  punct", new String[]{"Te,st.", "punct"})
      ));
      Dataset<Row> dataset = spark.createDataFrame(rdd, TokenizerTestData.class);
  
      List<Row> pairs = myRegExTokenizer.transform(dataset)
        .select("tokens", "wantedTokens")
        .collectAsList();
  
      for (Row r : pairs) {
        Assert.assertEquals(r.get(0), r.get(1));
      }
    }
  }
  