org.apache.beam.sdk.io.hdfs.HadoopFileSystemModuleTest.java Source code

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Here is the source code for org.apache.beam.sdk.io.hdfs.HadoopFileSystemModuleTest.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.beam.sdk.io.hdfs;

import static org.hamcrest.Matchers.hasItem;
import static org.junit.Assert.assertThat;

import com.fasterxml.jackson.databind.Module;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.AbstractMap;
import java.util.List;
import java.util.Map;
import org.apache.beam.sdk.util.common.ReflectHelpers;
import org.apache.hadoop.conf.Configuration;
import org.hamcrest.Matchers;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Test for {@link HadoopFileSystemModule}. */
@RunWith(JUnit4.class)
public class HadoopFileSystemModuleTest {
    @Test
    public void testObjectMapperIsAbleToFindModule() {
        List<Module> modules = ObjectMapper.findModules(ReflectHelpers.findClassLoader());
        assertThat(modules, hasItem(Matchers.<Module>instanceOf(HadoopFileSystemModule.class)));
    }

    @SuppressWarnings("unchecked")
    @Test
    public void testConfigurationSerializationDeserialization() throws Exception {
        Configuration baseConfiguration = new Configuration(false);
        baseConfiguration.set("testPropertyA", "baseA");
        baseConfiguration.set("testPropertyC", "baseC");
        Configuration configuration = new Configuration(false);
        configuration.addResource(baseConfiguration);
        configuration.set("testPropertyA", "A");
        configuration.set("testPropertyB", "B");
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.registerModule(new HadoopFileSystemModule());
        String serializedConfiguration = objectMapper.writeValueAsString(configuration);
        Configuration deserializedConfiguration = objectMapper.readValue(serializedConfiguration,
                Configuration.class);
        assertThat(deserializedConfiguration,
                Matchers.<Map.Entry<String, String>>containsInAnyOrder(
                        new AbstractMap.SimpleEntry("testPropertyA", "A"),
                        new AbstractMap.SimpleEntry("testPropertyB", "B"),
                        new AbstractMap.SimpleEntry("testPropertyC", "baseC")));
    }
}