| /* |
| * 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.pig.piggybank.test.evaluation; |
| |
| import java.util.Iterator; |
| import org.apache.pig.EvalFunc; |
| import org.apache.pig.data.DataBag; |
| import org.apache.pig.data.DefaultBagFactory; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.data.DefaultTupleFactory; |
| import org.apache.pig.piggybank.evaluation.stats.COR; |
| import org.apache.pig.piggybank.evaluation.stats.COV; |
| |
| import junit.framework.TestCase; |
| |
| public class TestStat extends TestCase{ |
| |
| public void testCOV() throws Exception{ |
| COV cov = new COV("a","b"); |
| DataBag dBag = DefaultBagFactory.getInstance().newDefaultBag(); |
| Tuple tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 1.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 4.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 8.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 4.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 7.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 8.0); |
| dBag.add(tup1); |
| DataBag dBag1 = DefaultBagFactory.getInstance().newDefaultBag(); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 2.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 2.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 3.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 3.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 2.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 4.0); |
| dBag1.add(tup1); |
| Tuple input = DefaultTupleFactory.getInstance().newTuple(2); |
| input.set(0, dBag); |
| input.set(1, dBag1); |
| DataBag output = cov.exec(input); |
| Iterator<Tuple> it = output.iterator(); |
| Tuple ans = (Tuple)it.next(); |
| assertEquals((String)ans.get(0),"a"); |
| assertEquals((String)ans.get(1),"b"); |
| assertEquals(1.11111, (Double)ans.get(2),0.0005); |
| } |
| |
| public void testCOR() throws Exception{ |
| COR cor = new COR("a","b"); |
| DataBag dBag = DefaultBagFactory.getInstance().newDefaultBag(); |
| Tuple tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 1.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 4.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 8.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 4.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 7.0); |
| dBag.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 8.0); |
| dBag.add(tup1); |
| DataBag dBag1 = DefaultBagFactory.getInstance().newDefaultBag(); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 2.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 2.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 3.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 3.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 2.0); |
| dBag1.add(tup1); |
| tup1 = DefaultTupleFactory.getInstance().newTuple(1); |
| tup1.set(0, 4.0); |
| dBag1.add(tup1); |
| Tuple input = DefaultTupleFactory.getInstance().newTuple(2); |
| input.set(0, dBag); |
| input.set(1, dBag1); |
| DataBag output = cor.exec(input); |
| Iterator<Tuple> it = output.iterator(); |
| Tuple ans = (Tuple) it.next(); |
| assertEquals((String)ans.get(0),"a"); |
| assertEquals((String)ans.get(1),"b"); |
| assertEquals(0.582222509739582, (Double)ans.get(2) ,0.0005); |
| } |
| } |