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  /*
   * Licensed 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 com.facebook.presto.operator;
 
 
 import java.util.List;
 
 import static com.facebook.presto.RowPagesBuilder.rowPagesBuilder;
 import static com.facebook.presto.SessionTestUtils.TEST_SESSION;
 import static com.facebook.presto.operator.OperatorAssertion.assertOperatorEquals;
 import static com.facebook.presto.operator.aggregation.AverageAggregations.LONG_AVERAGE;
 import static com.facebook.presto.operator.aggregation.CountAggregation.COUNT;
 import static com.facebook.presto.operator.aggregation.DoubleSumAggregation.DOUBLE_SUM;
 import static com.facebook.presto.operator.aggregation.LongSumAggregation.LONG_SUM;
 import static com.facebook.presto.spi.type.BigintType.BIGINT;
 import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
 import static com.facebook.presto.spi.type.TypeSignature.parseTypeSignature;
 import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
 import static com.facebook.presto.testing.MaterializedResult.resultBuilder;
 import static io.airlift.concurrent.Threads.daemonThreadsNamed;
 import static java.util.concurrent.Executors.newCachedThreadPool;
 
 @Test(singleThreaded = true)
 public class TestAggregationOperator
 {
     private ExecutorService executor;
     private DriverContext driverContext;
 
     @BeforeMethod
     public void setUp()
     {
          = newCachedThreadPool(daemonThreadsNamed("test-%s"));
 
          = new TaskContext(new TaskId("query""stage""task"), )
                 .addPipelineContext(truetrue)
                 .addDriverContext();
     }
 
     @AfterMethod
     public void tearDown()
     {
         .shutdownNow();
     }
 
     @Test
     public void testAggregation()
             throws Exception
     {
         MetadataManager metadata = new MetadataManager();
         InternalAggregationFunction countVarcharColumn = metadata.resolveFunction(QualifiedName.of("count"), ImmutableList.of(parseTypeSignature(.)), false).getAggregationFunction();
         InternalAggregationFunction maxVarcharColumn = metadata.resolveFunction(QualifiedName.of("max"), ImmutableList.of(parseTypeSignature(.)), false).getAggregationFunction();
         List<Pageinput = rowPagesBuilder()
                 .addSequencePage(100, 0, 0, 300, 500, 500, 500)
                 .build();
 
         OperatorFactory operatorFactory = new AggregationOperatorFactory(
                 0,
                 .,
                 ImmutableList.of(.bind(ImmutableList.of(0), Optional.empty(), Optional.empty(), 1.0),
                         .bind(ImmutableList.of(1), Optional.empty(), Optional.empty(), 1.0),
                         .bind(ImmutableList.of(1), Optional.empty(), Optional.empty(), 1.0),
                         maxVarcharColumn.bind(ImmutableList.of(2), Optional.empty(), Optional.empty(), 1.0),
                         countVarcharColumn.bind(ImmutableList.of(0), Optional.empty(), Optional.empty(), 1.0),
                         .bind(ImmutableList.of(3), Optional.empty(), Optional.empty(), 1.0),
                         .bind(ImmutableList.of(4), Optional.empty(), Optional.empty(), 1.0),
                         maxVarcharColumn.bind(ImmutableList.of(5), Optional.empty(), Optional.empty(), 1.0)));
         Operator operator = operatorFactory.createOperator();
 
                 .row(100, 4950, 49.5, "399", 100, 54950, 54950.0, "599")
                 .build();
 
         assertOperatorEquals(operatorinputexpected);
    }
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