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.beam.sdk.extensions.python.transforms;
  
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.testing.PAssert;
  import org.apache.beam.sdk.testing.UsesPythonExpansionService;
  import org.apache.beam.sdk.testing.ValidatesRunner;
  import org.apache.beam.sdk.transforms.Create;
  import org.apache.beam.sdk.util.construction.BaseExternalTest;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  @RunWith(JUnit4.class)
  public class PythonMapTest extends BaseExternalTest {
    @Test
    @Category({ValidatesRunner.class, UsesPythonExpansionService.class})
    public void testPythonMap() {
      PCollection<String> output =
          testPipeline
              .apply("CreateData", Create.of(ImmutableList.of("a", "b", "c", "d")))
              .apply(
                  "ApplyPythonMap",
                  PythonMap.<String, String>viaMapFn("lambda x:3*x", StringUtf8Coder.of())
                      .withExpansionService(expansionAddr));
      PAssert.that(output).containsInAnyOrder("aaa", "bbb", "ccc", "ddd");
    }
  
    @Test
    @Category({ValidatesRunner.class, UsesPythonExpansionService.class})
    public void testPythonFlatMap() {
      PCollection<String> output =
          testPipeline
              .apply("CreateData", Create.of(ImmutableList.of("a", "b", "c")))
              .apply(
                  "ApplyPythonFlatMap",
                  PythonMap.<String, String>viaFlatMapFn(
                          "lambda x:[2*x, 3*x, 4*x]", StringUtf8Coder.of())
                      .withExpansionService(expansionAddr));
      PAssert.that(output)
          .containsInAnyOrder("aa", "aaa", "aaaa", "bb", "bbb", "bbbb", "cc", "ccc", "cccc");
    }
  }
  