76 lines
2.7 KiB
Java
76 lines
2.7 KiB
Java
/*
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* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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import javax.imageio.stream.ImageInputStream;
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import javax.imageio.stream.ImageOutputStream;
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public class DeleteOnExitTest {
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public static void main(String[] args) throws IOException {
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ByteArrayInputStream is =
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new ByteArrayInputStream(new byte[100]);
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ByteArrayOutputStream os =
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new ByteArrayOutputStream();
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String tmp = System.getProperty("java.io.tmpdir", ".");
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System.out.println("tmp: " + tmp);
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// count number of files before test
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ImageIO.setUseCache(true);
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ImageIO.setCacheDirectory(new File(tmp));
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File tmpDir = ImageIO.getCacheDirectory();
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System.out.println("tmpDir is " + tmpDir);
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int fnum_before = tmpDir.list().length;
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System.out.println("Files before test: " + fnum_before);
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ImageInputStream iis =
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ImageIO.createImageInputStream(is);
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System.out.println("iis = " + iis);
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ImageInputStream iis2 =
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ImageIO.createImageInputStream(is);
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ImageOutputStream ios =
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ImageIO.createImageOutputStream(os);
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System.out.println("ios = " + ios);
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ImageOutputStream ios2 =
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ImageIO.createImageOutputStream(os);
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iis2.close();
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ios2.close();
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int fnum_after = tmpDir.list().length;
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System.out.println("Files after test: " + fnum_after);
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if (fnum_before == fnum_after) {
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throw new RuntimeException("Test failed: cache was not used.");
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}
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}
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}
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