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/*
* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageOutputStream;
public class DeleteOnExitTest {
public static void main(String[] args) throws IOException {
ByteArrayInputStream is =
new ByteArrayInputStream(new byte[100]);
ByteArrayOutputStream os =
new ByteArrayOutputStream();
String tmp = System.getProperty("java.io.tmpdir", ".");
System.out.println("tmp: " + tmp);
// count number of files before test
ImageIO.setUseCache(true);
ImageIO.setCacheDirectory(new File(tmp));
File tmpDir = ImageIO.getCacheDirectory();
System.out.println("tmpDir is " + tmpDir);
int fnum_before = tmpDir.list().length;
System.out.println("Files before test: " + fnum_before);
ImageInputStream iis =
ImageIO.createImageInputStream(is);
System.out.println("iis = " + iis);
ImageInputStream iis2 =
ImageIO.createImageInputStream(is);
ImageOutputStream ios =
ImageIO.createImageOutputStream(os);
System.out.println("ios = " + ios);
ImageOutputStream ios2 =
ImageIO.createImageOutputStream(os);
iis2.close();
ios2.close();
int fnum_after = tmpDir.list().length;
System.out.println("Files after test: " + fnum_after);
if (fnum_before == fnum_after) {
throw new RuntimeException("Test failed: cache was not used.");
}
}
}
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