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;
  
  import java.util.Arrays;
  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.PythonCallableSource;
  import org.apache.beam.sdk.util.construction.BaseExternalTest;
  import org.apache.beam.sdk.values.PCollection;
  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 ConsecutivePythonTransformsTest extends BaseExternalTest {
  
    @Test
    @Category({ValidatesRunner.class, UsesPythonExpansionService.class})
    public void testConsecutivePythonMaps() {
      PCollection<?> col =
          (PCollection<?>)
              testPipeline
                  .apply(Create.of(-1L, 2L, 3L))
                  .apply(
                      "ExternalMap1",
                      PythonExternalTransform.from("apache_beam.Map", expansionAddr)
                          .withArgs(PythonCallableSource.of("lambda x: 'negative' if x < 0 else x")));
      col =
          (PCollection<?>)
              col.apply(
                  "ExternalMap2",
                  PythonExternalTransform.from("apache_beam.Map", expansionAddr)
                      .withArgs(PythonCallableSource.of("type")));
      col =
          (PCollection<?>)
              col.apply(
                  "ExternalMap3",
                  PythonExternalTransform.from("apache_beam.Map", expansionAddr)
                      .withArgs(PythonCallableSource.of("str"))
                      .withOutputCoder(StringUtf8Coder.of()));
  
      PAssert.that((PCollection<String>) col)
          .containsInAnyOrder(Arrays.asList("<class 'str'>", "<class 'int'>", "<class 'int'>"));
    }
  }
  