| /* |
| * 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.test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.PrintStream; |
| import java.util.Iterator; |
| import java.util.Random; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.pig.PigServer; |
| import org.apache.pig.builtin.PigStorage; |
| import org.apache.pig.data.DataType; |
| import org.apache.pig.data.Tuple; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestInfixArithmetic { |
| |
| private final Log log = LogFactory.getLog(getClass()); |
| |
| private static int LOOP_COUNT = 1024; |
| |
| private PigServer pig; |
| |
| @Before |
| public void setUp() throws Exception { |
| pig = new PigServer(Util.getLocalTestMode()); |
| } |
| |
| Boolean[] nullFlags = new Boolean[] { false, true }; |
| |
| @Test |
| public void testAdd() throws Throwable { |
| File tmpFile = File.createTempFile("test", "txt"); |
| |
| for (int i = 0; i < nullFlags.length; i++) { |
| System.err.println("Testing with nulls: " + nullFlags[i]); |
| PrintStream ps = new PrintStream(new FileOutputStream(tmpFile)); |
| generateInput(ps, nullFlags[i]); |
| String query = "A = foreach (load '" |
| + Util.encodeEscape(Util.generateURI(tmpFile.toString(), pig.getPigContext())) |
| + "' using " + PigStorage.class.getName() |
| + "(':')) generate $0, $0 + $1, $1;"; |
| log.info(query); |
| pig.registerQuery(query); |
| Iterator<Tuple> it = pig.openIterator("A"); |
| tmpFile.delete(); |
| while(it.hasNext()) { |
| Tuple t = it.next(); |
| Double first = (t.get(0) == null ? null :DataType.toDouble(t.get(0))); |
| Double second = (t.get(1) == null ? null :DataType.toDouble(t.get(1))); |
| Double third = (t.get(2) == null ? null :DataType.toDouble(t.get(2))); |
| if(first != null && third != null) { |
| assertEquals(Double.valueOf(first + first), second); |
| } else { |
| assertNull(second); |
| } |
| } |
| } |
| } |
| |
| @Test |
| public void testSubtract() throws Throwable { |
| File tmpFile = File.createTempFile("test", "txt"); |
| for (int i = 0; i < nullFlags.length; i++) { |
| System.err.println("Testing with nulls: " + nullFlags[i]); |
| PrintStream ps = new PrintStream(new FileOutputStream(tmpFile)); |
| generateInput(ps, nullFlags[i]); |
| String query = "A = foreach (load '" |
| + Util.encodeEscape(Util.generateURI(tmpFile.toString(), pig.getPigContext())) |
| + "' using " + PigStorage.class.getName() |
| + "(':')) generate $0, $0 - $1, $1 ;"; |
| log.info(query); |
| pig.registerQuery(query); |
| Iterator<Tuple> it = pig.openIterator("A"); |
| tmpFile.delete(); |
| while(it.hasNext()) { |
| Tuple t = it.next(); |
| Double first = (t.get(0) == null ? null :DataType.toDouble(t.get(0))); |
| Double second = (t.get(1) == null ? null :DataType.toDouble(t.get(1))); |
| Double third = (t.get(2) == null ? null :DataType.toDouble(t.get(2))); |
| if(first != null && third != null) { |
| assertEquals(Double.valueOf(0.0), second); |
| } else { |
| assertNull(second); |
| } |
| } |
| } |
| } |
| |
| @Test |
| public void testMultiply() throws Throwable { |
| File tmpFile = File.createTempFile("test", "txt"); |
| for (int i = 0; i < nullFlags.length; i++) { |
| System.err.println("Testing with nulls: " + nullFlags[i]); |
| PrintStream ps = new PrintStream(new FileOutputStream(tmpFile)); |
| generateInput(ps, nullFlags[i]); |
| String query = "A = foreach (load '" |
| + Util.encodeEscape(Util.generateURI(tmpFile.toString(), pig.getPigContext())) |
| + "' using " + PigStorage.class.getName() |
| + "(':')) generate $0, $0 * $1, $1 ;"; |
| log.info(query); |
| pig.registerQuery(query); |
| Iterator<Tuple> it = pig.openIterator("A"); |
| tmpFile.delete(); |
| while(it.hasNext()) { |
| Tuple t = it.next(); |
| Double first = (t.get(0) == null ? null :DataType.toDouble(t.get(0))); |
| Double second = (t.get(1) == null ? null :DataType.toDouble(t.get(1))); |
| Double third = (t.get(2) == null ? null :DataType.toDouble(t.get(2))); |
| if(first != null && third != null) { |
| assertEquals(Double.valueOf(first * first), second); |
| } else { |
| assertNull(second); |
| } |
| } |
| } |
| } |
| |
| @Test |
| public void testDivide() throws Throwable { |
| File tmpFile = File.createTempFile("test", "txt"); |
| for (int i = 0; i < nullFlags.length; i++) { |
| System.err.println("Testing with nulls: " + nullFlags[i]); |
| PrintStream ps = new PrintStream(new FileOutputStream(tmpFile)); |
| generateInput(ps, nullFlags[i]); |
| String query = "A = foreach (load '" |
| + Util.encodeEscape(Util.generateURI(tmpFile.toString(), pig.getPigContext())) |
| + "' using " + PigStorage.class.getName() |
| + "(':')) generate $0, $0 / $1, $1 ;"; |
| log.info(query); |
| pig.registerQuery(query); |
| Iterator<Tuple> it = pig.openIterator("A"); |
| tmpFile.delete(); |
| while(it.hasNext()) { |
| Tuple t = it.next(); |
| Double first = (t.get(0) == null ? null :DataType.toDouble(t.get(0))); |
| Double second = (t.get(1) == null ? null :DataType.toDouble(t.get(1))); |
| Double third = (t.get(2) == null ? null :DataType.toDouble(t.get(2))); |
| if(first != null && third != null) { |
| assertEquals(Double.valueOf(1.0), second); |
| } else { |
| assertNull(second); |
| } |
| } |
| } |
| } |
| |
| private void generateInput(PrintStream ps, boolean withNulls) { |
| if(withNulls) { |
| // inject nulls randomly |
| for(int i = 1; i < LOOP_COUNT; i++) { |
| int rand = new Random().nextInt(LOOP_COUNT); |
| if(rand <= (0.2 * LOOP_COUNT) ) { |
| ps.println(":"+i); |
| } else if (rand > (0.2 * LOOP_COUNT) && rand <= (0.4 * LOOP_COUNT)) { |
| ps.println(i+":"); |
| } else if (rand > (0.2 * LOOP_COUNT) && rand <= (0.4 * LOOP_COUNT)) { |
| ps.println(":"); |
| } else { |
| ps.println(i + ":" + i); |
| } |
| } |
| } else { |
| for(int i = 1; i < LOOP_COUNT; i++) { |
| ps.println(i + ":" + i); |
| } |
| } |
| ps.close(); |
| } |
| } |