AddOverlayLayersTest.java

package org.mapfish.print.processor.map;

import com.google.common.base.Predicate;
import com.google.common.io.Files;
import jsr166y.ForkJoinPool;
import jsr166y.ForkJoinTask;
import org.apache.batik.transcoder.TranscoderException;
import org.junit.Test;
import org.mapfish.print.AbstractMapfishSpringTest;
import org.mapfish.print.TestHttpClientFactory;
import org.mapfish.print.config.Configuration;
import org.mapfish.print.config.ConfigurationFactory;
import org.mapfish.print.config.Template;
import org.mapfish.print.output.Values;
import org.mapfish.print.parser.MapfishParser;
import org.mapfish.print.test.util.ImageSimilarity;
import org.mapfish.print.wrapper.json.PJsonObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.mock.http.client.MockClientHttpRequest;
import org.springframework.test.annotation.DirtiesContext;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.util.List;

import static org.junit.Assert.assertEquals;

/**
 * Basic test of the background-layer processor.
 * <p></p>
 * Created by Jesse on 3/26/14.
 */
public class AddOverlayLayersTest extends AbstractMapfishSpringTest {
    public static final String BASE_DIR = "add-overlay-layers/";

    @Autowired
    private ConfigurationFactory configurationFactory;
    @Autowired
    private TestHttpClientFactory requestFactory;
    @Autowired
    private MapfishParser parser;
    @Autowired
    private ForkJoinPool forkJoinPool;

    @Test
    @DirtiesContext
    public void testExecute() throws Exception {
        final String host = "center_wms1_0_0_flexiblescale";
        requestFactory.registerHandler(
                new Predicate<URI>() {
                    @Override
                    public boolean apply(URI input) {
                        return (("" + input.getHost()).contains(host + ".wms")) || input.getAuthority().contains(host + ".wms");
                    }
                }, new TestHttpClientFactory.Handler() {
                    @Override
                    public MockClientHttpRequest handleRequest(URI uri, HttpMethod httpMethod) throws Exception {
                        try {
                            byte[] bytes = Files.toByteArray(getFile("/map-data/tiger-ny.tiff"));
                            return ok(uri, bytes, httpMethod);
                        } catch (AssertionError e) {
                            return error404(uri, httpMethod);
                        }
                    }
                }
        );
        requestFactory.registerHandler(
                new Predicate<URI>() {
                    @Override
                    public boolean apply(URI input) {
                        return (("" + input.getHost()).contains(host + ".json")) || input.getAuthority().contains(host + ".json");
                    }
                }, new TestHttpClientFactory.Handler() {
                    @Override
                    public MockClientHttpRequest handleRequest(URI uri, HttpMethod httpMethod) throws Exception {
                        try {
                            byte[] bytes = Files.toByteArray(getFile("/map-data" + uri.getPath()));
                            return ok(uri, bytes, httpMethod);
                        } catch (AssertionError e) {
                            return error404(uri, httpMethod);
                        }
                    }
                }
        );
        final Configuration config = configurationFactory.getConfig(getFile(BASE_DIR + "config.yaml"));
        final Template template = config.getTemplate("main");
        PJsonObject requestData = loadJsonRequestData();
        Values values = new Values(requestData, template, this.parser, getTaskDirectory(), this.requestFactory, new File("."));

        final ForkJoinTask<Values> taskFuture = this.forkJoinPool.submit(
                template.getProcessorGraph().createTask(values));
        taskFuture.get();

        assertImage(values, 1, "layerGraphics", "expectedSimpleImage.tiff", 630, 294);
        assertImage(values, 1, "overviewMapLayerGraphics", "expectedOverviewImage.tiff", 300, 200);
    }

    private void assertImage(Values values, int numberOfLayers, String graphicsValueKey, String imageName, int width, int height) throws IOException, TranscoderException {
        @SuppressWarnings("unchecked")
        List<URI> layerGraphics = (List<URI>) values.getObject(graphicsValueKey, List.class);
        assertEquals(numberOfLayers, layerGraphics.size());

        final BufferedImage bufferedImage = ImageSimilarity.mergeImages(layerGraphics, width, height);
//        ImageIO.write(bufferedImage, "tiff", new File("/tmp/" + imageName));
        new ImageSimilarity(bufferedImage, 2).assertSimilarity(getFile(BASE_DIR + imageName), 40);
    }

    private static PJsonObject loadJsonRequestData() throws IOException {
        return parseJSONObjectFromFile(AddOverlayLayersTest.class, BASE_DIR + "requestData.json");
    }
}