GreedyAllocatorTest.java

/*
 * 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,
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 * See the License for the specific language governing permissions and
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package gobblin.util.request_allocation;

import java.util.List;

import org.testng.Assert;
import org.testng.annotations.Test;

import com.google.common.base.Function;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;



public class GreedyAllocatorTest {
  @Test
  public void testAllocateRequests()
      throws Exception {
    RequestAllocatorConfig<StringRequest> configuration =
        RequestAllocatorConfig.builder(new StringRequest.StringRequestEstimator()).build();
    GreedyAllocator<StringRequest> allocator =
        new GreedyAllocator<>(configuration);

    ResourcePool pool = ResourcePool.builder().maxResource(StringRequest.MEMORY, 100.).build();

    List<Requestor<StringRequest>> requests = Lists.<Requestor<StringRequest>>newArrayList(
        new StringRequestor("r1", "a-50", "f-50", "k-20"),
        new StringRequestor("r2", "j-10", "b-20", "e-20"),
        new StringRequestor("r3", "g-20", "c-200", "d-30"));

    AllocatedRequestsIterator<StringRequest> result = allocator.allocateRequests(requests.iterator(), pool);

    List<StringRequest> resultList = Lists.newArrayList(result);

    Assert.assertEquals(resultList.size(), 2);
    // all equal, so no order guaranteed
    Assert.assertEquals(Sets.newHashSet(Lists.transform(resultList, new Function<StringRequest, String>() {
      @Override
      public String apply(StringRequest input) {
        return input.getString();
      }
    })), Sets.newHashSet("a-50", "f-50"));
  }

}