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
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  package org.apache.beam.sdk.extensions.ml;
  
  import static org.junit.Assert.assertEquals;
  
  import com.google.cloud.language.v1.AnnotateTextRequest;
  import com.google.cloud.language.v1.AnnotateTextResponse;
  import com.google.cloud.language.v1.Document;
  import java.util.ArrayList;
  import java.util.List;
  import org.apache.beam.sdk.testing.PAssert;
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.apache.beam.sdk.transforms.Create;
  import org.apache.beam.sdk.transforms.SerializableFunction;
  import org.apache.beam.sdk.values.PCollection;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  @RunWith(JUnit4.class)
  public class AnnotateTextIT {
    @Rule public TestPipeline testPipeline = TestPipeline.create();
    private static final String TEST_STRING = "Hello, world!";
  
    @Test
    public void analyzesLanguage() {
      Document doc =
          Document.newBuilder().setContent(TEST_STRING).setType(Document.Type.PLAIN_TEXT).build();
      AnnotateTextRequest.Features features =
          AnnotateTextRequest.Features.newBuilder().setExtractSyntax(true).build();
      PCollection<AnnotateTextResponse> responses =
          testPipeline
              .apply(Create.of(doc))
              .apply(AnnotateText.newBuilder().setFeatures(features).build());
      PAssert.that(responses).satisfies(new VerifyTextAnnotationResult());
      testPipeline.run().waitUntilFinish();
    }
  
    private static class VerifyTextAnnotationResult
        implements SerializableFunction<Iterable<AnnotateTextResponse>, Void> {
  
      @Override
      public Void apply(Iterable<AnnotateTextResponse> input) {
        List<Boolean> labelEvaluations = new ArrayList<>();
        input.forEach(
            response -> labelEvaluations.add(response.getLanguage().equalsIgnoreCase("en")));
        assertEquals(Boolean.TRUE, labelEvaluations.contains(Boolean.TRUE));
        return null;
      }
    }
  }
  