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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/**
 * @test
 * @bug     6684104
 * @summary Test verifies that ImageIO uses cache if requested.
 * @run     main/othervm CachePermissionsTest true
 * @run     main/othervm CachePermissionsTest false
 */

import java.io.IOException;
import java.io.ByteArrayOutputStream;
import javax.imageio.stream.ImageOutputStream;
import javax.imageio.ImageIO;

public class CachePermissionsTest {
    public static void main(String[] args) throws Exception {
        boolean isFileCacheExpected =
            Boolean.valueOf(args[0]).booleanValue();
        System.out.println("Is file cache expected: " + isFileCacheExpected);

        ImageIO.setUseCache(isFileCacheExpected);

        System.out.println("java.io.tmpdir is " + System.getProperty("java.io.tmpdir"));

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        ImageOutputStream ios = ImageIO.createImageOutputStream(baos);

        boolean isFileCache = ios.isCachedFile();
        System.out.println("Is file cache used: " + isFileCache);

        if (isFileCache != isFileCacheExpected) {
            System.out.println("WARNING: file cache usage is not as expected!");
        }

        System.out.println("Verify data writing...");
            for (int i = 0; i < 8192; i++) {
            ios.writeInt(i);
        }

        System.out.println("Verify data reading...");
        ios.seek(0L);

        for (int i = 0; i < 8192; i++) {
            int j = ios.readInt();
            if (i != j) {
                throw new RuntimeException("Wrong data in the stream " + j + " instead of " + i);
            }
        }

        System.out.println("Verify stream closing...");
        ios.close();
    }
}