| /* |
| * 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.string; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| import java.io.IOException; |
| |
| import org.apache.pig.EvalFunc; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.data.TupleFactory; |
| import org.apache.pig.piggybank.evaluation.string.LENGTH; |
| import org.junit.Test; |
| |
| public class TestLength { |
| |
| private static final EvalFunc<Integer> len_ = new LENGTH(); |
| private static Tuple testTuple_ = TupleFactory.getInstance().newTuple(1); |
| |
| @Test |
| public void testLength() throws IOException { |
| testTuple_.set(0,"foo"); |
| assertEquals("regular length should match", (Integer) 3, len_.exec(testTuple_)); |
| |
| testTuple_.set(0, null); |
| assertNull("length of null is null", len_.exec(testTuple_)); |
| |
| testTuple_.set(0, ""); |
| assertEquals("empty string has 0 length", (Integer) 0, len_.exec(testTuple_)); |
| } |
| } |