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.testing;
  
  import org.apache.beam.sdk.Pipeline;
  import org.apache.beam.sdk.PipelineResult;
  import org.apache.beam.sdk.PipelineRunner;
  import org.apache.beam.sdk.options.PipelineOptions;
  
  /**
   * A {@link PipelineRunner} that applies no overrides and throws an exception on calls to {@link
   * Pipeline#run()}. For use in {@link TestPipeline} to construct but not execute pipelines.
   */
  public final class CrashingRunner extends PipelineRunner<PipelineResult> {
  
    @SuppressWarnings("unused") // used by reflection
    public static CrashingRunner fromOptions(PipelineOptions opts) {
      return new CrashingRunner();
    }
  
    @Override
    public PipelineResult run(Pipeline pipeline) {
      throw new IllegalArgumentException(
          String.format(
              "Cannot call #run(Pipeline) on an instance "
                  + "of %s. %s should only be used as the default to construct a Pipeline "
                  + "using %s, and cannot execute Pipelines. Instead, specify a %s "
                  + "by providing PipelineOptions in the system property '%s'.",
              CrashingRunner.class.getSimpleName(),
              CrashingRunner.class.getSimpleName(),
              TestPipeline.class.getSimpleName(),
              PipelineRunner.class.getSimpleName(),
              TestPipeline.PROPERTY_BEAM_TEST_PIPELINE_OPTIONS));
    }
  }
  