| /* |
| * 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. |
| */ |
| |
| /******************************************************************************* |
| * Copyright 2015, Yahoo Inc. |
| * Licensed under the terms of the Apache License 2.0. See LICENSE file at the project root for terms. |
| *******************************************************************************/ |
| package org.apache.datasketches.hive.theta; |
| |
| import static org.testng.AssertJUnit.assertEquals; |
| |
| import org.apache.hadoop.io.BytesWritable; |
| import org.testng.annotations.Test; |
| |
| import org.apache.datasketches.memory.Memory; |
| import org.apache.datasketches.theta.Sketch; |
| import org.apache.datasketches.theta.Sketches; |
| import org.apache.datasketches.theta.UpdateSketch; |
| |
| @SuppressWarnings("javadoc") |
| public class IntersectSketchUDFTest { |
| |
| @Test |
| public void evaluateNull() { |
| IntersectSketchUDF testObject = new IntersectSketchUDF(); |
| BytesWritable intermResult = testObject.evaluate(null, null); |
| Memory mem = Memory.wrap(intermResult.getBytes()); |
| Sketch testResult = Sketches.wrapSketch(mem); |
| assertEquals(0.0, testResult.getEstimate()); |
| } |
| |
| @Test |
| public void evaluateEmpty() { |
| IntersectSketchUDF testObject = new IntersectSketchUDF(); |
| BytesWritable intermResult = testObject.evaluate(new BytesWritable(), new BytesWritable()); |
| Memory mem = Memory.wrap(intermResult.getBytes()); |
| Sketch testResult = Sketches.wrapSketch(mem); |
| assertEquals(0.0, testResult.getEstimate()); |
| } |
| |
| @Test |
| public void evaluateValidSketch() { |
| IntersectSketchUDF testObject = new IntersectSketchUDF(); |
| |
| UpdateSketch sketch1 = Sketches.updateSketchBuilder().setNominalEntries(1024).build(); |
| for (int i = 0; i<128; i++) { |
| sketch1.update(i); |
| } |
| |
| UpdateSketch sketch2 = Sketches.updateSketchBuilder().setNominalEntries(1024).build(); |
| for (int i = 100; i<128; i++) { |
| sketch2.update(i); |
| } |
| |
| BytesWritable input1 = new BytesWritable(sketch1.compact().toByteArray()); |
| BytesWritable input2 = new BytesWritable(sketch2.compact().toByteArray()); |
| |
| BytesWritable output = testObject.evaluate(input1, input2); |
| |
| Sketch result = Sketches.wrapSketch(Memory.wrap(output.getBytes())); |
| |
| assertEquals(28.0, result.getEstimate()); |
| } |
| |
| @Test |
| public void evaluateValidSketchExpicitSeed() { |
| IntersectSketchUDF testObject = new IntersectSketchUDF(); |
| |
| final long seed = 1; |
| UpdateSketch sketch1 = Sketches.updateSketchBuilder().setSeed(seed).setNominalEntries(1024).build(); |
| for (int i = 0; i<128; i++) { |
| sketch1.update(i); |
| } |
| |
| UpdateSketch sketch2 = Sketches.updateSketchBuilder().setSeed(seed).setNominalEntries(1024).build(); |
| for (int i = 100; i<128; i++) { |
| sketch2.update(i); |
| } |
| |
| BytesWritable input1 = new BytesWritable(sketch1.compact().toByteArray()); |
| BytesWritable input2 = new BytesWritable(sketch2.compact().toByteArray()); |
| |
| BytesWritable output = testObject.evaluate(input1, input2, seed); |
| |
| Sketch result = Sketches.wrapSketch(Memory.wrap(output.getBytes()), seed); |
| |
| assertEquals(28.0, result.getEstimate()); |
| } |
| |
| } |