AggregationUnitFactoryTest.java

/*
 * Copyright 1999-2015 dangdang.com.
 * <p>
 * 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.
 * </p>
 */

package com.dangdang.ddframe.rdb.sharding.merger.pipeline.coupling.aggregation;

import com.dangdang.ddframe.rdb.sharding.parser.result.merger.AggregationColumn;
import org.junit.Test;

import static org.hamcrest.CoreMatchers.instanceOf;
import static org.junit.Assert.assertThat;

public final class AggregationUnitFactoryTest {
    
    @Test
    public void assertCreateComparableAggregationUnit() {
        assertThat(AggregationUnitFactory.create(AggregationColumn.AggregationType.MIN), instanceOf(ComparableAggregationUnit.class));
        assertThat(AggregationUnitFactory.create(AggregationColumn.AggregationType.MAX), instanceOf(ComparableAggregationUnit.class));
    }
    
    @Test
    public void assertCreateAccumulationAggregationUnit() {
        assertThat(AggregationUnitFactory.create(AggregationColumn.AggregationType.SUM), instanceOf(AccumulationAggregationUnit.class));
        assertThat(AggregationUnitFactory.create(AggregationColumn.AggregationType.COUNT), instanceOf(AccumulationAggregationUnit.class));
    }
    
    @Test
    public void assertCreateAverageAggregationUnit() {
        assertThat(AggregationUnitFactory.create(AggregationColumn.AggregationType.AVG), instanceOf(AverageAggregationUnit.class));
    }
}