org.apache.apex.examples.recordReader.ApplicationTest.java Source code

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Here is the source code for org.apache.apex.examples.recordReader.ApplicationTest.java

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/**
 * 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.apex.examples.recordReader;

import java.io.File;
import java.io.IOException;

import javax.validation.ConstraintViolationException;

import org.junit.Assert;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestWatcher;
import org.junit.runner.Description;

import org.apache.commons.io.FileUtils;
import org.apache.hadoop.conf.Configuration;

import com.datatorrent.api.LocalMode;

/**
 * Test application in local mode.
 */
public class ApplicationTest {
    private String outputDir;

    public static class TestMeta extends TestWatcher {
        public String baseDirectory;

        @Override
        protected void starting(org.junit.runner.Description description) {
            this.baseDirectory = "target/" + description.getClassName() + "/" + description.getMethodName();
        }

        @Override
        protected void finished(Description description) {
            super.finished(description);
            try {
                FileUtils.forceDelete(new File(baseDirectory));
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }

    @Rule
    public TestMeta testMeta = new TestMeta();

    @Before
    public void setup() throws Exception {
        outputDir = testMeta.baseDirectory + File.separator + "output";
    }

    @Test
    public void testApplication() throws IOException, Exception {
        try {
            LocalMode lma = LocalMode.newInstance();
            Configuration conf = new Configuration(false);
            conf.addResource(this.getClass().getResourceAsStream("/META-INF/properties.xml"));
            conf.set("dt.application.RecordReaderExample.operator.fileOutput.prop.filePath", outputDir);
            File outputfile = FileUtils.getFile(outputDir, "output.txt_5.0");

            lma.prepareDAG(new Application(), conf);
            LocalMode.Controller lc = lma.getController();
            lc.runAsync();

            // wait for tuples to show up
            while (!outputfile.exists()) {
                Thread.sleep(1000);
            }

            lc.shutdown();
            Assert.assertTrue(FileUtils.contentEquals(
                    FileUtils.getFile(
                            conf.get("dt.application.RecordReaderExample.operator.recordReader.prop.files")),
                    outputfile));

        } catch (ConstraintViolationException e) {
            Assert.fail("constraint violations: " + e.getConstraintViolations());
        }
    }

}