/*
    * 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.giraph.examples.block_app;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  import org.apache.giraph.BspCase;
  import org.apache.giraph.block_app.framework.BlockUtils;
  import org.apache.giraph.conf.GiraphConfiguration;
  import org.apache.giraph.examples.SimplePageRankComputation.SimplePageRankVertexInputFormat;
  import org.apache.giraph.job.GiraphJob;
  import org.junit.Test;
  
  /**
   * Unit test for many simple BSP applications.
   */
  public class
      TestMigrationBspBasic extends BspCase {
  
    public TestMigrationBspBasic() {
      super(TestMigrationBspBasic.class.getName());
    }
  
    /**
     * Run a sample BSP job locally and test using migration
     * library for Blocks Framework, as an drop-in replacement.
     */
    @Test
    public void testBspMigrationToBlocksFramework() throws Exception {
      GiraphConfiguration conf = new GiraphConfiguration();
      conf.setVertexInputFormatClass(SimplePageRankVertexInputFormat.class);
      BlockUtils.setAndInitBlockFactoryClass(
          conf, SimpleMigrationMasterBlockFactory.class);
      GiraphJob job = prepareJob(getCallingMethodName(), conf);
      assertTrue(job.run(true));
      if (!runningInDistributedMode()) {
        double finalSum =
            SimpleMigrationMasterBlockFactory.SimpleMigrationMasterWorkerContext.getFinalSum();
        System.out.println("testBspMasterCompute: finalSum=" + finalSum);
        assertEquals(32.5, finalSum, 0d);
      }
    }
  }