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* 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 static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.when;
import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFExtractUnion.ObjectInspectorConverter;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFExtractUnion.ValueConverter;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.UnionObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableConstantIntObjectInspector;
import org.apache.hadoop.io.IntWritable;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
import com.google.common.collect.ImmutableList;
@RunWith(MockitoJUnitRunner.class)
public class TestGenericUDFExtractUnion {
@Mock
private ObjectInspectorConverter objectInspectorConverter;
@Mock
private ValueConverter valueConverter;
@Mock
private UnionObjectInspector unionOI;
@Mock
private WritableConstantIntObjectInspector tagOI;
@Mock
private ObjectInspector initialiseResult;
@Mock
private DeferredObject deferredObject;
private final Object value = new Object();
private final Object converted = new Object();
private GenericUDF underTest;
@Before
public void before() {
underTest = new GenericUDFExtractUnion(objectInspectorConverter, valueConverter);
}
@Test
public void evaluate_SingleArgumentOnly() throws HiveException {
when(deferredObject.get()).thenReturn(value);
when(valueConverter.convert(value, unionOI)).thenReturn(converted);
underTest.initialize(new ObjectInspector[] { unionOI });
Object result = underTest.evaluate(new DeferredObject[] { deferredObject });
assertThat(result, is(converted));
}
@Test
public void evaluate_UnionAndTagArguments_MatchesTag() throws HiveException {
when(unionOI.getObjectInspectors()).thenReturn(
ImmutableList.<ObjectInspector> of(
PrimitiveObjectInspectorFactory.writableStringObjectInspector,
PrimitiveObjectInspectorFactory.writableLongObjectInspector));
when(tagOI.getWritableConstantValue()).thenReturn(new IntWritable(0));
when(deferredObject.get()).thenReturn(value);
when(unionOI.getTag(value)).thenReturn((byte) 0);
when(unionOI.getField(value)).thenReturn("foo");
underTest.initialize(new ObjectInspector[] { unionOI, tagOI });
Object result = underTest.evaluate(new DeferredObject[] { deferredObject });
assertThat(result, is((Object) "foo"));
}
@Test
public void evaluate_UnionAndTagArguments_NotMatchesTag() throws HiveException {
when(unionOI.getObjectInspectors()).thenReturn(
ImmutableList.<ObjectInspector> of(
PrimitiveObjectInspectorFactory.writableStringObjectInspector,
PrimitiveObjectInspectorFactory.writableLongObjectInspector));
when(tagOI.getWritableConstantValue()).thenReturn(new IntWritable(0));
when(deferredObject.get()).thenReturn(value);
when(unionOI.getTag(value)).thenReturn((byte) 1);
underTest.initialize(new ObjectInspector[] { unionOI, tagOI });
Object result = underTest.evaluate(new DeferredObject[] { deferredObject });
assertThat(result, is(nullValue()));
}
@Test
public void initialize_SingleArgumentOnly() throws UDFArgumentException {
when(objectInspectorConverter.convert(unionOI)).thenReturn(initialiseResult);
ObjectInspector result = underTest.initialize(new ObjectInspector[] { unionOI });
assertThat(result, is(initialiseResult));
}
@Test
public void initialize_UnionAndTagArguments() throws UDFArgumentException {
when(unionOI.getObjectInspectors()).thenReturn(
ImmutableList.<ObjectInspector> of(
PrimitiveObjectInspectorFactory.writableStringObjectInspector,
PrimitiveObjectInspectorFactory.writableLongObjectInspector));
when(tagOI.getWritableConstantValue()).thenReturn(new IntWritable(0));
ObjectInspector result = underTest.initialize(new ObjectInspector[] { unionOI, tagOI });
assertThat(result, is((ObjectInspector) PrimitiveObjectInspectorFactory.writableStringObjectInspector));
}
@Test(expected = UDFArgumentException.class)
public void initialize_NegativeTagThrowsException() throws UDFArgumentException {
when(tagOI.getWritableConstantValue()).thenReturn(new IntWritable(-1));
underTest.initialize(new ObjectInspector[] { unionOI, tagOI });
}
@Test(expected = UDFArgumentException.class)
public void initialize_OutOfBoundsTagThrowsException() throws UDFArgumentException {
when(unionOI.getObjectInspectors()).thenReturn(
ImmutableList.<ObjectInspector> of(
PrimitiveObjectInspectorFactory.writableStringObjectInspector,
PrimitiveObjectInspectorFactory.writableLongObjectInspector));
when(tagOI.getWritableConstantValue()).thenReturn(new IntWritable(2));
underTest.initialize(new ObjectInspector[] { unionOI, tagOI });
}
@Test(expected = UDFArgumentException.class)
public void initialize_TagNotAnIntThrowsException() throws UDFArgumentException {
underTest.initialize(new ObjectInspector[] { unionOI, PrimitiveObjectInspectorFactory.writableIntObjectInspector });
}
@Test(expected = UDFArgumentException.class)
public void initialize_UnionNotAUnionThrowsException() throws UDFArgumentException {
underTest.initialize(new ObjectInspector[] { PrimitiveObjectInspectorFactory.writableIntObjectInspector, tagOI });
}
@Test(expected = UDFArgumentException.class)
public void initialize_NoArgumentsThrowsException() throws UDFArgumentException {
underTest.initialize(new ObjectInspector[] {});
}
@Test(expected = UDFArgumentException.class)
public void initialize_TooManyArgumentsThrowsException() throws UDFArgumentException {
underTest.initialize(
new ObjectInspector[] { unionOI, tagOI, PrimitiveObjectInspectorFactory.writableIntObjectInspector });
}
}