/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.aggregation;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import static com.hazelcast.aggregation.TestSamples.createEntryWithValue;
import static com.hazelcast.aggregation.TestSamples.createExtractableEntryWithValue;
import static com.hazelcast.aggregation.TestSamples.sampleBigDecimals;
import static com.hazelcast.aggregation.TestSamples.samplePersons;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class CountAggregationTest {
@Test(timeout = TimeoutInMillis.MINUTE)
public void testCountAggregator() {
List<BigDecimal> values = sampleBigDecimals();
long expectation = values.size();
Aggregator<Map.Entry<BigDecimal, BigDecimal>, Long> aggregation = Aggregators.count();
for (BigDecimal value : values) {
aggregation.accumulate(createEntryWithValue(value));
}
Aggregator<Map.Entry<BigDecimal, BigDecimal>, Long> resultAggregation = Aggregators.count();
resultAggregation.combine(aggregation);
long result = resultAggregation.aggregate();
assertThat(result, is(equalTo(expectation)));
}
@Test(timeout = TimeoutInMillis.MINUTE)
public void testCountAggregator_withAttributePath() {
List<Person> values = samplePersons();
long expectation = values.size();
Aggregator<Map.Entry<Person, Person>, Long> aggregation = Aggregators.count("age");
for (Person person : values) {
aggregation.accumulate(createExtractableEntryWithValue(person));
}
Aggregator<Map.Entry<BigDecimal, BigDecimal>, Long> resultAggregation = Aggregators.count("age");
resultAggregation.combine(aggregation);
long result = resultAggregation.aggregate();
assertThat(result, is(equalTo(expectation)));
}
@Test(timeout = TimeoutInMillis.MINUTE)
public void testCountAggregator_withNull() {
List<BigDecimal> values = sampleBigDecimals();
values.add(null);
long expectation = values.size();
Aggregator<Map.Entry<BigDecimal, BigDecimal>, Long> aggregation = Aggregators.count();
for (BigDecimal value : values) {
aggregation.accumulate(createEntryWithValue(value));
}
Aggregator<Map.Entry<BigDecimal, BigDecimal>, Long> resultAggregation = Aggregators.count();
resultAggregation.combine(aggregation);
long result = resultAggregation.aggregate();
assertThat(result, is(equalTo(expectation)));
}
@Test(timeout = TimeoutInMillis.MINUTE)
public void testCountAggregator_withAttributePath_withNull() {
List<Person> values = samplePersons();
values.add(null);
long expectation = values.size();
Aggregator<Map.Entry<Person, Person>, Long> aggregation = Aggregators.count("age");
for (Person person : values) {
aggregation.accumulate(createExtractableEntryWithValue(person));
}
Aggregator<Map.Entry<BigDecimal, BigDecimal>, Long> resultAggregation = Aggregators.count("age");
resultAggregation.combine(aggregation);
long result = resultAggregation.aggregate();
assertThat(result, is(equalTo(expectation)));
}
}