com.google.appengine.tools.mapreduce.MapReduceXmlTest.java Source code

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Here is the source code for com.google.appengine.tools.mapreduce.MapReduceXmlTest.java

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/*
 * Copyright 2010 Google Inc.
 *
 * Licensed 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 com.google.appengine.tools.mapreduce;

import com.google.common.collect.Sets;

import junit.framework.TestCase;

import org.apache.hadoop.conf.Configuration;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;

/**
 * Tests the {@link MapReduceXml} class.
 *
 */
public class MapReduceXmlTest extends TestCase {
    // Also used by MapReduceServletTest
    static final String SAMPLE_CONFIGURATION_XML = "<configurations>" + "  <configuration name=\"Foo\" />"
            + "  <configuration name=\"Bar\">" + "    <property>" + "      <name>Baz</name>"
            + "      <value template=\"optional\">2</value>" + "    </property>" + "  </configuration>"
            + "</configurations>";

    public InputStream inputStreamFromString(String s) {
        try {
            return new ByteArrayInputStream(s.getBytes("UTF8"));
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException("Huh. JDK doesn't support UTF8");
        }
    }

    public void testConstructor() {
        MapReduceXml mrXml = new MapReduceXml(inputStreamFromString(SAMPLE_CONFIGURATION_XML));
        assertEquals(Sets.newHashSet(mrXml.getConfigurationNames()), Sets.newHashSet("Foo", "Bar"));
    }

    public void testTemplateIsIntact() {
        MapReduceXml mrXml = new MapReduceXml(inputStreamFromString(SAMPLE_CONFIGURATION_XML));
        String templateString = mrXml.getTemplateAsXmlString("Bar");
        ConfigurationTemplatePreprocessor preprocessor = new ConfigurationTemplatePreprocessor(templateString);
        String configString = preprocessor.preprocess(new HashMap<String, String>());
        Configuration conf = ConfigurationXmlUtil.getConfigurationFromXml(configString);
        assertEquals(2, conf.getInt("Baz", 0));
    }
}