/**
* 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 org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.apache.hadoop.io.IntWritable;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
public class TestGenericUDFWidthBucket {
@Test
public void testExprLessThanMinValue() throws HiveException {
assertEquals(0, testWidthBucketWithValues(99L, 100L, 5000L, 10).get());
}
@Test
public void testExprEqualsMinValue() throws HiveException {
assertEquals(1, testWidthBucketWithValues(100L, 100L, 5000L, 10).get());
}
@Test
public void testExprEqualsBoundaryValue() throws HiveException {
assertEquals(2, testWidthBucketWithValues(590L, 100L, 5000L, 10).get());
}
@Test
public void testExprEqualsMaxValue() throws HiveException {
assertEquals(11, testWidthBucketWithValues(5000L, 100L, 5000L, 10).get());
}
@Test
public void testExprAboveMaxValue() throws HiveException {
assertEquals(11, testWidthBucketWithValues(6000L, 100L, 5000L, 10).get());
}
@Test(expected = IllegalArgumentException.class)
public void testNegativeBucketValue() throws HiveException {
testWidthBucketWithValues(100L, 100L, 5000L, -1);
}
@Test(expected = IllegalArgumentException.class)
public void testZeroBucketValue() throws HiveException {
testWidthBucketWithValues(100L, 100L, 5000L, 0);
}
private IntWritable testWidthBucketWithValues(Long expr, Long minValue, Long maxValue, Integer numBuckets) throws HiveException {
GenericUDFWidthBucket udf = new GenericUDFWidthBucket();
ObjectInspector valueOI1 = PrimitiveObjectInspectorFactory.javaLongObjectInspector;
ObjectInspector valueOI2 = PrimitiveObjectInspectorFactory.javaLongObjectInspector;
ObjectInspector valueOI3 = PrimitiveObjectInspectorFactory.javaLongObjectInspector;
ObjectInspector valueOI4 = PrimitiveObjectInspectorFactory.javaIntObjectInspector;
ObjectInspector[] arguments = {valueOI1, valueOI2, valueOI3, valueOI4};
udf.initialize(arguments);
GenericUDF.DeferredObject valueObj1 = new GenericUDF.DeferredJavaObject(expr);
GenericUDF.DeferredObject valueObj2 = new GenericUDF.DeferredJavaObject(minValue);
GenericUDF.DeferredObject valueObj3 = new GenericUDF.DeferredJavaObject(maxValue);
GenericUDF.DeferredObject valueObj4 = new GenericUDF.DeferredJavaObject(numBuckets);
GenericUDF.DeferredObject[] args = {valueObj1, valueObj2, valueObj3, valueObj4};
return (IntWritable) udf.evaluate(args);
}
}