| /* |
| * Copyright (c) 2008, 2011, 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. |
| */ |
| |
| /* @test |
| * @bug 6334003 6440786 |
| * @summary Test ability to write and read zip files that have no entries. |
| * @author Dave Bristor |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| import java.util.zip.*; |
| |
| public class TestEmptyZip { |
| public static void realMain(String[] args) throws Throwable { |
| String zipName = "foo.zip"; |
| File f = new File(System.getProperty("test.scratch", "."), zipName); |
| if (f.exists() && !f.delete()) { |
| throw new Exception("failed to delete " + zipName); |
| } |
| |
| f.createNewFile(); |
| try { |
| // Verify 0-length file cannot be read |
| checkCannotRead(f); |
| |
| // Verify non-zip file cannot be read |
| OutputStream out = new FileOutputStream(f); |
| try { |
| out.write("class Foo { }".getBytes()); |
| } finally { |
| out.close(); |
| } |
| checkCannotRead(f); |
| |
| } finally { |
| f.delete(); |
| } |
| |
| // Verify 0-entries file can be written |
| write(f); |
| |
| // Verify 0-entries file can be read |
| readFile(f); |
| readStream(f); |
| |
| f.delete(); |
| } |
| |
| static void checkCannotRead(File f) throws IOException { |
| try { |
| new ZipFile(f).close(); |
| fail(); |
| } catch (ZipException ze) { |
| if (f.length() == 0) { |
| check(ze.getMessage().contains("zip file is empty")); |
| } else { |
| pass(); |
| } |
| } |
| try (FileInputStream fis = new FileInputStream(f); |
| ZipInputStream zis = new ZipInputStream(fis)) |
| { |
| ZipEntry ze = zis.getNextEntry(); |
| check(ze == null); |
| } catch (IOException ex) { |
| unexpected(ex); |
| } |
| } |
| |
| static void write(File f) throws Exception { |
| try (FileOutputStream fis = new FileOutputStream(f); |
| ZipOutputStream zos = new ZipOutputStream(fis)) |
| { |
| zos.finish(); |
| pass(); |
| } catch (Exception ex) { |
| unexpected(ex); |
| } |
| } |
| |
| static void readFile(File f) throws Exception { |
| try (ZipFile zf = new ZipFile(f)) { |
| |
| Enumeration e = zf.entries(); |
| while (e.hasMoreElements()) { |
| ZipEntry entry = (ZipEntry) e.nextElement(); |
| fail(); |
| } |
| pass(); |
| } catch (Exception ex) { |
| unexpected(ex); |
| } |
| } |
| |
| static void readStream(File f) throws Exception { |
| try (FileInputStream fis = new FileInputStream(f); |
| ZipInputStream zis = new ZipInputStream(fis)) |
| { |
| ZipEntry ze = zis.getNextEntry(); |
| check(ze == null); |
| byte[] buf = new byte[1024]; |
| check(zis.read(buf, 0, 1024) == -1); |
| } |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| static volatile int passed = 0, failed = 0; |
| static boolean pass() {passed++; return true;} |
| static boolean fail() {failed++; Thread.dumpStack(); return false;} |
| static boolean fail(String msg) {System.out.println(msg); return fail();} |
| static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| static boolean check(boolean cond) {if (cond) pass(); else fail(); return cond;} |
| static boolean equal(Object x, Object y) { |
| if (x == null ? y == null : x.equals(y)) return pass(); |
| else return fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| System.out.println("\nPassed = " + passed + " failed = " + failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |