jdk-24/jdk/test/java/io/File/createTempFile/SpecialTempFile.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * 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).
 *
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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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/*
 * @test
 * @bug 8013827 8011950 8017212
 * @summary Check whether File.createTempFile can handle special parameters
 * @author Dan Xu
 */

import java.io.File;
import java.io.IOException;

public class SpecialTempFile {

    private static void test(String name, String[] prefix, String[] suffix) {
        if (prefix == null || suffix == null
            || prefix.length != suffix.length)
        {
            return;
        }

        final String exceptionMsg = "Unable to create temporary file";
        final String errMsg = "IOException is expected";

        for (int i = 0; i < prefix.length; i++) {
            boolean exceptionThrown = false;
            File f = null;
            System.out.println("In test " + name
                               + ", creating temp file with prefix, "
                               + prefix[i] + ", suffix, " + suffix[i]);
            try {
                f = File.createTempFile(prefix[i], suffix[i]);
            } catch (IOException e) {
                if (exceptionMsg.equals(e.getMessage()))
                    exceptionThrown = true;
                else
                    System.out.println("Wrong error message:" + e.getMessage());
            }
            if (!exceptionThrown || f != null)
                throw new RuntimeException(errMsg);
        }
    }

    public static void main(String[] args) throws Exception {
        // Common test
        final String name = "SpecialTempFile";
        File f = new File(System.getProperty("java.io.tmpdir"), name);
        if (!f.exists()) {
            f.createNewFile();
        }
        String[] nulPre = { name + "\u0000" };
        String[] nulSuf = { ".test" };
        test("NulName", nulPre, nulSuf);

        // Windows tests
        if (!System.getProperty("os.name").startsWith("Windows"))
            return;

        // Test JDK-8013827
        String[] resvPre = { "LPT1.package.zip", "com7.4.package.zip" };
        String[] resvSuf = { ".temp", ".temp" };
        test("ReservedName", resvPre, resvSuf);

        // Test JDK-8011950
        String[] slashPre = { "///..///", "temp", "///..///" };
        String[] slashSuf = { ".temp", "///..///..", "///..///.." };
        test("SlashedName", slashPre, slashSuf);
    }
}