core/sis-feature/src/test/java/org/apache/sis/image/ImageProcessorTest.java

/*
 * 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.sis.image;

import java.util.Map;
import java.awt.Shape;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import org.apache.sis.internal.processing.isoline.IsolinesTest;
import org.apache.sis.test.DependsOn;
import org.opengis.referencing.operation.MathTransform;
import org.apache.sis.test.TestCase;
import org.junit.Test;

import static org.junit.Assert.*;
import static org.apache.sis.test.TestUtilities.getSingleton;


/**
 * Tests {@link ImageProcessor}.
 *
 * @author  Martin Desruisseaux (Geomatys)
 * @version 1.1
 * @since   1.1
 * @module
 */
@DependsOn(org.apache.sis.internal.processing.isoline.IsolinesTest.class)
public final strictfp class ImageProcessorTest extends TestCase {
    /**
     * Tests {@link ImageProcessor#isolines(RenderedImage, double[][], MathTransform)}.
     */
    @Test
    public void testIsolines() {
        final BufferedImage image = new BufferedImage(3, 3, BufferedImage.TYPE_BYTE_BINARY);
        image.getRaster().setSample(1, 1, 0, 1);

        final ImageProcessor processor = new ImageProcessor();
        boolean parallel = false;
        do {
            processor.setExecutionMode(parallel ? ImageProcessor.Mode.SEQUENTIAL : ImageProcessor.Mode.PARALLEL);
            final Map<Double,Shape> r = getSingleton(processor.isolines(image, new double[][] {{0.5}}, null));
            assertEquals(0.5, getSingleton(r.keySet()), STRICT);
            IsolinesTest.verifyIsolineFromMultiCells(getSingleton(r.values()));
        } while ((parallel = !parallel) == true);
    }
}