/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.operation.scalar;
import com.google.common.collect.ImmutableList;
import io.crate.metadata.FunctionIdent;
import io.crate.metadata.FunctionInfo;
import io.crate.metadata.Functions;
import io.crate.operation.Input;
import io.crate.types.DataType;
import io.crate.types.DataTypes;
import io.crate.types.SetType;
import org.elasticsearch.common.inject.Injector;
import org.elasticsearch.common.inject.ModulesBuilder;
import org.junit.Test;
import java.util.HashSet;
import java.util.Set;
import static org.junit.Assert.assertEquals;
public class CollectionAverageFunctionTest {
final FunctionIdent ident = new FunctionIdent(CollectionAverageFunction.NAME,
ImmutableList.<DataType>of(new SetType(DataTypes.LONG)));
@Test
public void testLookup() throws Exception {
Injector injector = new ModulesBuilder().add(
new ScalarFunctionModule()
).createInjector();
Functions functions = injector.getInstance(Functions.class);
assertEquals(ident, functions.get(ident).info().ident());
}
@Test
public void testEvaluate() throws Exception {
CollectionAverageFunction function = new CollectionAverageFunction(
new FunctionInfo(
ident,
DataTypes.DOUBLE)
);
Input inputSet = new Input<Set<Long>>() {
@Override
public Set<Long> value() {
return new HashSet<Long>(){{
add(3L);
add(7L);
}};
}
};
assertEquals(new Double(5), function.evaluate(inputSet));
}
}