piazza.services.ingest.test.SerializationTests.java Source code

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Here is the source code for piazza.services.ingest.test.SerializationTests.java

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/**
 * Copyright 2016, RadiantBlue Technologies, 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 piazza.services.ingest.test;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.junit.Before;
import org.junit.Test;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.vividsolutions.jts.geom.Geometry;

import piazza.services.ingest.util.GeoJsonDeserializer;
import piazza.services.ingest.util.GeoJsonSerializer;

/**
 * Tests the serialization objects, deserializing and serializing GeoJSON geometries.
 * 
 * @author Patrick.Doody
 *
 */
public class SerializationTests {
    GeoJsonDeserializer deserializer = new GeoJsonDeserializer();
    GeoJsonSerializer serializer = new GeoJsonSerializer();
    String resourceBasePath;
    ObjectMapper objectMapper = new ObjectMapper();
    JsonFactory jsonFactory = new JsonFactory();

    /**
     * Setup the tests
     */
    @Before
    public void setup() {
        jsonFactory.setCodec(objectMapper);
        // The path to the test files. Use this as the base to loading each file for test.
        resourceBasePath = "src" + File.separator + "test" + File.separator + "resources" + File.separator;
    }

    /**
     * Tests serialization and deserialization of GeoJSON Features
     */
    @Test
    public void testSerialization() throws Exception {
        List<String> geometries = new ArrayList<String>(Arrays.asList("Point", "Polygon", "LineString",
                "MultiPoint", "MultiPolygon", "MultiLineString", "GeometryCollection"));
        JsonGenerator generator = jsonFactory.createGenerator(System.out);
        File file;
        for (String geometryType : geometries) {
            // Load test file
            file = new File(String.format("%s%s.%s", resourceBasePath, geometryType, "geojson"));
            JsonParser parser = jsonFactory.createParser(file);
            // Read
            Geometry geometry = deserializer.deserialize(parser, null);
            // Write
            serializer.serialize(geometry, generator, null);
        }
        file = null;
        generator.close();
    }

    /**
     * Test error handling for a serialization.
     */
    @Test(expected = Exception.class)
    public void testSerializationError() throws Exception {
        File file = new File(String.format("%s%s.%s", resourceBasePath, "Unsupported", "geojson"));
        JsonParser parser = jsonFactory.createParser(file);
        Geometry geometry = deserializer.deserialize(parser, null);
    }
}