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