com.hortonworks.streamline.streams.catalog.configuration.ConfigFileWriterTest.java Source code

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Here is the source code for com.hortonworks.streamline.streams.catalog.configuration.ConfigFileWriterTest.java

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/**
  * Copyright 2017 Hortonworks.
  *
  * 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.hortonworks.streamline.streams.catalog.configuration;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
import org.apache.commons.io.IOUtils;
import org.junit.Test;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.nio.file.Files;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

public class ConfigFileWriterTest {

    private ConfigFileWriter writer = new ConfigFileWriter();

    @Test
    public void writeHadoopXmlConfigToFile() throws Exception {
        Map<String, String> configuration = createDummyConfiguration();

        File destPath = Files.createTempFile("config", "xml").toFile();
        destPath.deleteOnExit();

        writer.writeConfigToFile(ConfigFileType.HADOOP_XML, configuration, destPath);
        assertTrue(destPath.exists());
        try (InputStream is = new FileInputStream(destPath)) {
            String content = IOUtils.toString(is);

            System.out.println("Test print: XML content - " + content);

            assertTrue(content.trim().startsWith("<configuration>"));
            assertTrue(content.trim().endsWith("</configuration>"));
            assertTrue(content.contains("<property>"));
            assertTrue(content.contains("</property>"));

            for (Map.Entry<String, String> property : configuration.entrySet()) {
                assertTrue(content.contains("<name>" + property.getKey() + "</name>"));
                assertTrue(content.contains("<value>" + property.getValue() + "</value>"));
            }
        }
    }

    @Test
    public void writeJavaPropertiesConfigToFile() throws Exception {
        Map<String, String> configuration = createDummyConfiguration();

        File destPath = Files.createTempFile("config", "properties").toFile();
        destPath.deleteOnExit();

        writer.writeConfigToFile(ConfigFileType.PROPERTIES, configuration, destPath);
        assertTrue(destPath.exists());
        try (InputStream is = new FileInputStream(destPath)) {
            String content = IOUtils.toString(is);
            System.out.println("Test print: properties content - " + content);
        }

        try (InputStream is = new FileInputStream(destPath)) {
            Properties prop = new Properties();
            prop.load(is);

            for (Map.Entry<String, String> property : configuration.entrySet()) {
                assertEquals(property.getValue().toString(), prop.getProperty(property.getKey()));
            }
        }
    }

    @Test
    public void writeYamlConfigToFile() throws Exception {
        Map<String, String> configuration = createDummyConfiguration();

        File destPath = Files.createTempFile("config", "yaml").toFile();
        destPath.deleteOnExit();

        writer.writeConfigToFile(ConfigFileType.YAML, configuration, destPath);
        assertTrue(destPath.exists());
        try (InputStream is = new FileInputStream(destPath)) {
            String content = IOUtils.toString(is);
            System.out.println("Test print: yaml content - " + content);

            ObjectMapper mapper = new YAMLMapper();
            Map<String, Object> readConfig = mapper.readValue(content, Map.class);

            assertEquals(configuration, readConfig);
        }
    }

    @Test(expected = IllegalArgumentException.class)
    public void writeUnknownTypeConfigToFile() throws Exception {
        Map<String, String> configuration = createDummyConfiguration();

        File destPath = Files.createTempFile("config", "unknown").toFile();
        destPath.deleteOnExit();

        writer.writeConfigToFile(null, configuration, destPath);
        fail("It shouldn't reach here.");
    }

    private Map<String, String> createDummyConfiguration() {
        Map<String, String> dummyConfiguration = new HashMap<>();
        dummyConfiguration.put("javax.jdo.option.ConnectionDriverName", "com.mysql.jdbc.Driver");
        dummyConfiguration.put("ipc.client.connect.max.retries", "50");
        return dummyConfiguration;
    }
}