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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 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.Image;

import java.awt.image.BufferedImage;

import java.util.Properties;

import static java.awt.image.BufferedImage.TYPE_INT_ARGB;

/**

 * @test

 * @bug 8066132

 * @author Sergey Bylokhov

 */

public final class GetPropertyNames {

    static BufferedImage defaultProps = new BufferedImage(1, 1, TYPE_INT_ARGB);

    public static void main(final String[] args) {

        // default result is null

        if (defaultProps.getPropertyNames() != null) {

            throw new RuntimeException("PropertyNames should be null");

        }

        // for null properties result is null

        final BufferedImage emptyProps = getBufferedImage(null);

        if (emptyProps.getPropertyNames() != null) {

            throw new RuntimeException("PropertyNames should be null");

        }

        // for empty properties result is null

        final BufferedImage nullProps = getBufferedImage(new Properties());

        if (nullProps.getPropertyNames() != null) {

            throw new RuntimeException("PropertyNames should be null");

        }

        // for non-string keys result is null

        final Properties properties = new Properties();

        properties.put(1, 1);

        properties.put(2, 2);

        properties.put(3, 3);

        final BufferedImage nonStringProps = getBufferedImage(properties);

        if (nonStringProps.getPropertyNames() != null) {

            throw new RuntimeException("PropertyNames should be null");

        }

        // for string keys result is not null

        properties.clear();

        properties.setProperty("1", "1");

        properties.setProperty("2", "2");

        validate(getBufferedImage(properties), 2);

        // for the mix of strings and objects result is not null

        properties.clear();

        properties.put(1, 1);

        properties.put(2, 2);

        properties.put(3, 3);

        properties.setProperty("key1", "value1");

        properties.setProperty("key2", "value2");

        final BufferedImage mixProps = getBufferedImage(properties);

        validate(mixProps, 2);

        if (!"value1".equals(mixProps.getProperty("key1"))

            || !"value2".equals(mixProps.getProperty("key2"))) {

            throw new RuntimeException("Wrong key-value pair");

        }

    }

    private static BufferedImage getBufferedImage(final Properties properties) {

        return new BufferedImage(defaultProps.getColorModel(),

                                 defaultProps.getRaster(),

                                 defaultProps.isAlphaPremultiplied(),

                                 properties);

    }

    private static void validate(final BufferedImage bi, final int expected) {

        final String[] names = bi.getPropertyNames();

        if (names.length != expected) {

            throw new RuntimeException("Wrong number of names");

        }

        for (final String name : names) {

            final Object property = bi.getProperty(name);

            if (property == Image.UndefinedProperty || property == null) {

                throw new RuntimeException("Unexpected property");

            }

        }

    }

}