| /* |
| * 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; |
| |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.hadoop.mapreduce.OutputFormat; |
| import org.apache.hadoop.mapreduce.RecordWriter; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.impl.util.Utils; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.util.LinkedList; |
| import java.util.NoSuchElementException; |
| |
| import static junit.framework.Assert.assertNotNull; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Tests that the StoreFuncWrapper properly wraps StoreFuncInterface objects |
| */ |
| public class TestStoreFuncWrapper { |
| |
| // Asserts that each call to a Wrapper invokes the correct method on the Wrappee. |
| @Test |
| public void testSucess() throws IOException { |
| DummyStoreFunc storeFunc = new DummyStoreFunc(); |
| MockWrapper wrapper = new MockWrapper(storeFunc); |
| |
| wrapper.relToAbsPathForStoreLocation(null, null); |
| assertEquals("relToAbsPathForStoreLocation", storeFunc.getLastMethodCalled()); |
| |
| wrapper.getOutputFormat(); |
| assertEquals("getOutputFormat", storeFunc.getLastMethodCalled()); |
| |
| wrapper.setStoreLocation(null, null); |
| assertEquals("setStoreLocation", storeFunc.getLastMethodCalled()); |
| |
| wrapper.checkSchema(null); |
| assertEquals("checkSchema", storeFunc.getLastMethodCalled()); |
| |
| wrapper.prepareToWrite(null); |
| assertEquals("prepareToWrite", storeFunc.getLastMethodCalled()); |
| |
| wrapper.putNext(null); |
| assertEquals("putNext", storeFunc.getLastMethodCalled()); |
| |
| wrapper.setStoreFuncUDFContextSignature(null); |
| assertEquals("setStoreFuncUDFContextSignature", storeFunc.getLastMethodCalled()); |
| |
| wrapper.cleanupOnSuccess(null, null); |
| assertEquals("cleanupOnSuccess", storeFunc.getLastMethodCalled()); |
| |
| wrapper.cleanupOnFailure(null, null); |
| assertEquals("cleanupOnFailure", storeFunc.getLastMethodCalled()); |
| |
| NoSuchElementException e = null; |
| try { |
| storeFunc.getLastMethodCalled(); |
| } catch (NoSuchElementException ex) { |
| e = ex; |
| } |
| |
| assertNotNull("The wrapped class had more method invokations than it should have", e); |
| } |
| |
| // Asserts that each call to an improperly initialized Wrapper fails. |
| @Test |
| public void testError() throws IOException { |
| MockWrapper wrapper = new MockWrapper(); // <-- !! storeFunc not set !! |
| |
| IllegalArgumentException e = null; |
| try { |
| wrapper.getOutputFormat(); |
| } catch (IllegalArgumentException ex) { |
| e = ex; |
| } |
| |
| assertNotNull("A useful exception should have been thrown when a method is called on an " |
| + "improperly initialized StoreFuncWrapper", e); |
| assertTrue("The method name that caused the problem should have been mentioned in the " |
| + "exception, since the stack trace gets swallowed when this occurs", |
| e.getMessage().contains("getOutputFormat")); |
| } |
| |
| private static class MockWrapper extends StoreFuncWrapper { |
| private MockWrapper() { } |
| |
| private MockWrapper(StoreFuncInterface storeFunc) { |
| setStoreFunc(storeFunc); |
| } |
| } |
| |
| public static class DummyStoreFunc implements StoreFuncInterface { |
| private LinkedList<String> methodCalls = new LinkedList<String>(); |
| |
| public String getLastMethodCalled() { return methodCalls.pop(); } |
| protected void setLastMethodCalled() { |
| StackTraceElement e[] = Thread.currentThread().getStackTrace(); |
| int index; |
| if (Utils.isVendorIBM()) { |
| index = 3; |
| } else { |
| index = 2; |
| } |
| methodCalls.push(e[index].getMethodName()); |
| } |
| |
| @Override |
| public String relToAbsPathForStoreLocation(String location, Path curDir) throws IOException { |
| setLastMethodCalled(); |
| return null; |
| } |
| |
| @Override |
| public OutputFormat getOutputFormat() throws IOException { |
| setLastMethodCalled(); |
| return null; |
| } |
| |
| @Override |
| public void setStoreLocation(String location, Job job) throws IOException { |
| setLastMethodCalled(); |
| } |
| |
| @Override |
| public void checkSchema(ResourceSchema s) throws IOException { |
| setLastMethodCalled(); |
| } |
| |
| @Override |
| public void prepareToWrite(RecordWriter writer) throws IOException { |
| setLastMethodCalled(); |
| } |
| |
| @Override |
| public void putNext(Tuple t) throws IOException { |
| setLastMethodCalled(); |
| } |
| |
| @Override |
| public void setStoreFuncUDFContextSignature(String signature) { |
| setLastMethodCalled(); |
| } |
| |
| @Override |
| public void cleanupOnSuccess(String location, Job job) throws IOException { |
| setLastMethodCalled(); |
| } |
| |
| @Override |
| public void cleanupOnFailure(String location, Job job) throws IOException { |
| setLastMethodCalled(); |
| } |
| } |
| } |