/**
* 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.hadoop.hive.ql.udf.generic;
import junit.framework.TestCase;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredJavaObject;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
public class TestGenericUDFCbrt extends TestCase {
public void testCbrt() throws HiveException {
GenericUDFCbrt udf = new GenericUDFCbrt();
ObjectInspector valueOI0 = PrimitiveObjectInspectorFactory.writableDoubleObjectInspector;
ObjectInspector[] arguments = { valueOI0 };
udf.initialize(arguments);
runAndVerify(0.0, 0.0, udf);
runAndVerify(1.0, 1.0, udf);
runAndVerify(-1.0, -1.0, udf);
runAndVerify(27.0, 3.0, udf);
runAndVerify(-27.0, -3.0, udf);
runAndVerify(87860583272930481.0, 444561.0, udf);
runAndVerify(null, null, udf);
}
private void runAndVerify(Double in, Double expResult, GenericUDF udf) throws HiveException {
DeferredObject valueObj0 = new DeferredJavaObject(in != null ? new DoubleWritable(in) : null);
DeferredObject[] args = { valueObj0 };
DoubleWritable output = (DoubleWritable) udf.evaluate(args);
if (expResult == null) {
assertNull("cbrt() test", output);
} else {
assertNotNull("cbrt() test", output);
assertEquals("cbrt() test", expResult.doubleValue(), output.get(), 1E-10);
}
}
}