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

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Here is the source code for org.apache.apex.examples.enricher.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.enricher;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.codehaus.jackson.map.ObjectMapper;
import org.junit.Test;

import org.apache.apex.api.EmbeddedAppLauncher;
import org.apache.apex.api.Launcher;
import org.apache.apex.api.Launcher.ShutdownMode;
import org.apache.apex.malhar.lib.function.Function;
import org.apache.hadoop.conf.Configuration;

import com.datatorrent.api.Attribute;

import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertTrue;

/**
 * Test the DAG declaration in local mode.
 */
public class ApplicationTest {
    private static final List<Object> results = Collections.synchronizedList(new ArrayList<>());
    @SuppressWarnings("serial")
    private static final Function.MapFunction<Object, Void> outputFn = new Function.MapFunction<Object, Void>() {
        @Override
        public Void f(Object input) {
            results.add(input);
            return null;
        }
    };

    @Test
    public void testApplication() throws Exception {
        Configuration conf = new Configuration(false);
        conf.addResource(this.getClass().getResourceAsStream("/META-INF/properties.xml"));
        EmbeddedAppLauncher<?> launcher = Launcher.getLauncher(Launcher.LaunchMode.EMBEDDED);
        Attribute.AttributeMap launchAttributes = new Attribute.AttributeMap.DefaultAttributeMap();
        launchAttributes.put(EmbeddedAppLauncher.RUN_ASYNC, true);
        EnricherAppWithJSONFile enricherAppWithJSONFile = new EnricherAppWithJSONFile();
        enricherAppWithJSONFile.outputFn = outputFn;
        Launcher.AppHandle appHandle = launcher.launchApp(enricherAppWithJSONFile, conf, launchAttributes);
        int sleepTimeCounterForLoopExit = 0;
        int sleepTimePerIteration = 500;
        // wait until expected result count or timeout
        while (results.size() < enricherAppWithJSONFile.getDataGenerator().getLimit()) {
            sleepTimeCounterForLoopExit += sleepTimePerIteration;
            if (sleepTimeCounterForLoopExit > 30000) {
                break;
            }
            Thread.sleep(sleepTimePerIteration);
        }
        appHandle.shutdown(ShutdownMode.KILL);
        assertTrue(results.size() >= enricherAppWithJSONFile.getDataGenerator().getLimit());
        assertEnrichedOutput();
    }

    private void assertEnrichedOutput() throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        Map<String, Integer> countsOfEnrichedValues = new HashMap<>();
        String enrichedValue = null;
        for (Object result : results) {
            POJOEnriched anEnrichedEntry = mapper.readValue(result.toString(), POJOEnriched.class);
            enrichedValue = anEnrichedEntry.getCircleName();
            assertNotNull(enrichedValue); // all values should have an entiched value
            if (!countsOfEnrichedValues.containsKey(enrichedValue)) {
                countsOfEnrichedValues.put(enrichedValue, 1);
            } else {
                Integer currentCountForEnrichedEntry = countsOfEnrichedValues.get(enrichedValue);
                countsOfEnrichedValues.put(enrichedValue, currentCountForEnrichedEntry + 1);
            }
        }
        for (String circleName : countsOfEnrichedValues.keySet()) {
            int currentCircleNameAsciiCode = (circleName.charAt(0));
            Integer circleNameCount = countsOfEnrichedValues.get(circleName);
            // All circle names  "A" to "E" should have a count of 2 and all others should have 1
            if ((currentCircleNameAsciiCode > 64) && (currentCircleNameAsciiCode < 70)) {
                assertEquals(2, circleNameCount.intValue());
            } else {
                assertEquals(1, circleNameCount.intValue());
            }
        }
    }
}