/**
* 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.metamodel.query;
import static org.junit.Assert.*;
import org.apache.metamodel.schema.ColumnType;
import org.apache.metamodel.util.AggregateBuilder;
import org.junit.Test;
public class FirstAggregateFunctionTest {
private static final AggregateFunction FUNCTION = FunctionType.FIRST;
@Test
public void testGetName() throws Exception {
assertEquals("FIRST", FUNCTION.getFunctionName());
assertEquals("FIRST", FUNCTION.toString());
}
@Test
public void testDataType() throws Exception {
assertEquals(ColumnType.BIGINT, FUNCTION.getExpectedColumnType(ColumnType.BIGINT));
assertEquals(ColumnType.STRING, FUNCTION.getExpectedColumnType(ColumnType.STRING));
}
@Test
public void testBuildAggregate() throws Exception {
final AggregateBuilder<?> aggregateBuilder = FUNCTION.createAggregateBuilder();
aggregateBuilder.add("1");
aggregateBuilder.add("2");
aggregateBuilder.add("3");
assertEquals("1", aggregateBuilder.getAggregate());
}
}