test/jdk/java/awt/image/multiresolution/MultiResolutionImagePropertiesTest.java

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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.awt.*;
import java.awt.image.*;
import java.util.*;

/* @test
 * @bug 8147966
 * @summary test multiresolution image properties
 * @author a.stepanov
 *
 * @run main MultiResolutionImagePropertiesTest
 */

public class MultiResolutionImagePropertiesTest {

    private final static Map<String, String> PROPS;
    static {
        PROPS = new HashMap<>();
        PROPS.put("one",   "ONE");
        PROPS.put("two",   "TWO");
        PROPS.put("three", "THREE");
        PROPS.put("other", "OTHER");
        PROPS.put("test",  "TEST");
    }

    private final static int SZ = 100;
    private final static Object UNDEF = Image.UndefinedProperty;

    private static BufferedImage generateImage(int scale, Properties p) {

        int x = (int) (SZ * scale);
        BufferedImage tmp = new BufferedImage(x, x, BufferedImage.TYPE_INT_RGB);

        return new BufferedImage(tmp.getColorModel(),
                                 tmp.getRaster(),
                                 tmp.isAlphaPremultiplied(),
                                 p);
    }

    private static void checkProperties(BufferedImage img,
                                        String keys[],
                                        String undefined[]) {
        boolean numOK = true;

        if (keys.length == 0) {
            numOK = (img.getPropertyNames() == null);
        } else {
            numOK = (img.getPropertyNames().length == keys.length);
        }

        if (!numOK) {
            throw new RuntimeException("invalid number of properties");
        }

        for (String k: keys) {
            if (!img.getProperty(k).equals(PROPS.get(k))) {
                throw new RuntimeException("invalid property for name " + k);
            }
        }

        for (String k: undefined) {
            if (!img.getProperty(k).equals(UNDEF)) {
                throw new RuntimeException("property for name " + k +
                    " must be undefined");
            }
        }
    }

    private static void checkProperties(BaseMultiResolutionImage img,
                                        String keys[],
                                        String undefined[]) {
        for (String k: keys) {
            if (!img.getProperty(k, null).equals(PROPS.get(k))) {
                throw new RuntimeException("invalid property for name " + k);
            }
        }

        for (String k: undefined) {
            if (!img.getProperty(k, null).equals(UNDEF)) {
                throw new RuntimeException("property for name " + k +
                    " must be undefined");
            }
        }
    }


    public static void main(String[] args) throws Exception {

        String keys[] = new String[]{"one", "two", "three"};
        String otherKeys[] = new String[]{"other", "test"};
        String empty[] = new String[]{};

        Properties props = new Properties();
        for (String k: keys) { props.setProperty(k, PROPS.get(k)); }

        Properties otherProps = new Properties();
        for (String k: otherKeys) { otherProps.setProperty(k, PROPS.get(k)); }

        Properties defaultProps = new Properties();


        // === check the default state ===
        BaseMultiResolutionImage image =
            new BaseMultiResolutionImage(new BufferedImage[]{
                generateImage(1, defaultProps),
                generateImage(2, defaultProps),
                generateImage(3, defaultProps)
            });

        for (Image var: image.getResolutionVariants()) {
            if (((BufferedImage) var).getPropertyNames() != null) {
                throw new RuntimeException("PropertyNames should be null");
            }
        }

        // === default: base image is the 1st one ===
        image =
            new BaseMultiResolutionImage(new BufferedImage[]{
                generateImage(1, props),
                generateImage(2, otherProps),
                generateImage(3, defaultProps)
            });

        checkProperties(image, keys, otherKeys);

        BufferedImage var = (BufferedImage) image.getResolutionVariant(SZ, SZ);
        checkProperties(var, keys, otherKeys);

        var = (BufferedImage) image.getResolutionVariant(2 * SZ, 2 * SZ);
        checkProperties(var, otherKeys, keys);

        var = (BufferedImage) image.getResolutionVariant(3 * SZ, 3 * SZ);
        checkProperties(var, empty, keys);
        checkProperties(var, empty, otherKeys);

        // === let the 2nd image be a base one ===
        image =
            new BaseMultiResolutionImage(1, new BufferedImage[]{
                generateImage(1, props),
                generateImage(2, otherProps),
                generateImage(3, defaultProps)
            });

        checkProperties(image, otherKeys, keys);

        var = (BufferedImage) image.getResolutionVariant(SZ, SZ);
        checkProperties(var, keys, otherKeys);

        var = (BufferedImage) image.getResolutionVariant(2 * SZ, 2 * SZ);
        checkProperties(var, otherKeys, keys);

        var = (BufferedImage) image.getResolutionVariant(3 * SZ, 3 * SZ);
        checkProperties(var, empty, keys);
        checkProperties(var, empty, otherKeys);

        // === let the 3rd image be a base one ===
        image =
            new BaseMultiResolutionImage(2, new BufferedImage[]{
                generateImage(1, defaultProps),
                generateImage(2, defaultProps),
                generateImage(3, props)
            });

        checkProperties(image, keys, otherKeys);

        var = (BufferedImage) image.getResolutionVariant(SZ, SZ);
        checkProperties(var, empty, keys);
        checkProperties(var, empty, otherKeys);

        var = (BufferedImage) image.getResolutionVariant(2 * SZ, 2 * SZ);
        checkProperties(var, empty, keys);
        checkProperties(var, empty, otherKeys);

        var = (BufferedImage) image.getResolutionVariant(3 * SZ, 3 * SZ);
        checkProperties(var, keys, otherKeys);

        // === check the other properties don't affect base ===
        checkProperties(
            new BaseMultiResolutionImage(new BufferedImage[]{
                generateImage(1, defaultProps),
                generateImage(2, props),
                generateImage(3, props)
            }),
            empty, keys);

        checkProperties(
            new BaseMultiResolutionImage(2, new BufferedImage[]{
                generateImage(1, props),
                generateImage(2, props),
                generateImage(3, defaultProps)
            }),
            empty, keys);
    }
}