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.sql.impl.planner;
  
  import org.junit.Assert;
  import org.junit.Test;
  
  /** Tests the behavior of BeamCostModel. */
  public class BeamCostModelTest {
  
    @Test
    public void testDefaultConstructorIsInfinite() {
      BeamCostModel cost = BeamCostModel.FACTORY.makeCost(1, 1, 1);
      Assert.assertTrue(cost.isInfinite());
    }
  
    @Test
    public void testOneInfiniteValue() {
      BeamCostModel cost = BeamCostModel.FACTORY.makeCost(Double.POSITIVE_INFINITY, 1);
      Assert.assertTrue(cost.isInfinite());
    }
  
    @Test
    public void testComparisonOfBoundedCost() {
      BeamCostModel cost1 = BeamCostModel.FACTORY.makeCost(10, 0);
      BeamCostModel cost2 = BeamCostModel.FACTORY.makeCost(1, 0);
      BeamCostModel cost3 = BeamCostModel.FACTORY.makeCost(10, 0);
      Assert.assertTrue(cost2.isLt(cost1));
      Assert.assertFalse(cost1.isLt(cost2));
  
      Assert.assertFalse(cost1.isLt(cost3));
      Assert.assertFalse(cost3.isLt(cost1));
      Assert.assertTrue(cost3.isLe(cost1));
    }
  
    @Test
    public void testComparisonOfUnboundedCost() {
      BeamCostModel cost1 = BeamCostModel.FACTORY.makeCost(0, 10);
      BeamCostModel cost2 = BeamCostModel.FACTORY.makeCost(0, 1);
      BeamCostModel cost3 = BeamCostModel.FACTORY.makeCost(0, 10);
      Assert.assertTrue(cost2.isLt(cost1));
      Assert.assertFalse(cost1.isLt(cost2));
  
      Assert.assertTrue(cost1.equals(cost3));
      Assert.assertFalse(cost1.isLt(cost3));
      Assert.assertFalse(cost3.isLt(cost1));
      Assert.assertTrue(cost3.isLe(cost1));
    }
  
    @Test
    public void testEffectOfRateVsRowCount() {
      BeamCostModel boundedCost = BeamCostModel.FACTORY.makeCost(10, 0);
      BeamCostModel unboundedCost = BeamCostModel.FACTORY.makeCost(0, 10);
  
      Assert.assertTrue(boundedCost.isLt(unboundedCost));
      Assert.assertTrue(boundedCost.isLe(unboundedCost));
      Assert.assertFalse(unboundedCost.isLe(boundedCost));
    }
  
    @Test
    public void testComparisonInfiniteVsInfinite() {
      BeamCostModel inf1 = BeamCostModel.FACTORY.makeCost(Double.POSITIVE_INFINITY, 0);
      BeamCostModel inf2 = BeamCostModel.FACTORY.makeInfiniteCost();
  
      Assert.assertTrue(inf1.isLe(inf2));
      Assert.assertTrue(inf2.isLe(inf1));
      Assert.assertFalse(inf1.isLt(inf2));
      Assert.assertFalse(inf2.isLt(inf1));
    }
  
    @Test
    public void testComparisonInfiniteVsHuge() {
      BeamCostModel inf = BeamCostModel.FACTORY.makeCost(Double.POSITIVE_INFINITY, 0);
      BeamCostModel huge = BeamCostModel.FACTORY.makeHugeCost();
  
      Assert.assertTrue(huge.isLe(inf));
      Assert.assertTrue(huge.isLt(inf));
      Assert.assertFalse(inf.isLt(huge));
      Assert.assertFalse(inf.isLt(huge));
    }
  
    @Test
    public void testHugePlusHugeIsInfinite() {
      BeamCostModel cost =
          BeamCostModel.FACTORY.makeHugeCost().plus(BeamCostModel.FACTORY.makeHugeCost());
      Assert.assertTrue(cost.isInfinite());
    }
  }
  