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/*
* 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 4313887 6838333
* @summary Unit test for java.nio.file.DirectoryStream
* @library ..
*/
import java.nio.file.*;
import static java.nio.file.Files.*;
import java.util.*;
import java.io.IOException;
public class Basic {
static boolean found;
static void doTest(final Path dir) throws IOException {
DirectoryStream<Path> stream;
// test that directory is empty
try (DirectoryStream<Path> ds = newDirectoryStream(dir)) {
if (ds.iterator().hasNext())
throw new RuntimeException("directory not empty");
}
// create file in directory
final Path foo = Paths.get("foo");
createFile(dir.resolve(foo));
// iterate over directory and check there is one entry
stream = newDirectoryStream(dir);
found = false;
try {
for (Path entry: stream) {
if (entry.getFileName().equals(foo)) {
if (found)
throw new RuntimeException("entry already found");
found = true;
} else {
throw new RuntimeException("entry " + entry.getFileName() +
" not expected");
}
}
} finally {
stream.close();
}
if (!found)
throw new RuntimeException("entry not found");
// check filtering: f* should match foo
DirectoryStream.Filter<Path> filter = new DirectoryStream.Filter<Path>() {
private PathMatcher matcher =
dir.getFileSystem().getPathMatcher("glob:f*");
public boolean accept(Path file) {
return matcher.matches(file);
}
};
try (DirectoryStream<Path> ds = newDirectoryStream(dir, filter)) {
for (Path entry: ds) {
if (!entry.getFileName().equals(foo))
throw new RuntimeException("entry not expected");
}
}
// check filtering: z* should not match any files
filter = new DirectoryStream.Filter<Path>() {
private PathMatcher matcher =
dir.getFileSystem().getPathMatcher("glob:z*");
public boolean accept(Path file) {
return matcher.matches(file);
}
};
try (DirectoryStream<Path> ds = newDirectoryStream(dir, filter)) {
if (ds.iterator().hasNext())
throw new RuntimeException("no matching entries expected");
}
// check that an IOException thrown by a filter is propagated
filter = new DirectoryStream.Filter<Path>() {
public boolean accept(Path file) throws IOException {
throw new java.util.zip.ZipException();
}
};
stream = newDirectoryStream(dir, filter);
try {
stream.iterator().hasNext();
throw new RuntimeException("DirectoryIteratorException expected");
} catch (DirectoryIteratorException x) {
IOException cause = x.getCause();
if (!(cause instanceof java.util.zip.ZipException))
throw new RuntimeException("Expected IOException not propagated");
} finally {
stream.close();
}
// check that exception or error thrown by filter is not thrown
// by newDirectoryStream or iterator method.
stream = newDirectoryStream(dir, new DirectoryStream.Filter<Path>() {
public boolean accept(Path file) {
throw new RuntimeException("Should not be visible");
}
});
try {
stream.iterator();
} finally {
stream.close();
}
// test NotDirectoryException
try {
newDirectoryStream(dir.resolve(foo));
throw new RuntimeException("NotDirectoryException not thrown");
} catch (NotDirectoryException x) {
}
// test UnsupportedOperationException
stream = newDirectoryStream(dir);
Iterator<Path> i = stream.iterator();
i.next();
try {
i.remove();
throw new RuntimeException("UnsupportedOperationException expected");
} catch (UnsupportedOperationException uoe) {
}
// test IllegalStateException
stream = newDirectoryStream(dir);
stream.iterator();
try {
// attempt to obtain second iterator
stream.iterator();
throw new RuntimeException("IllegalStateException not thrown as expected");
} catch (IllegalStateException x) {
}
stream.close();
stream = newDirectoryStream(dir);
stream.close();
try {
// attempt to obtain iterator after stream is closed
stream.iterator();
throw new RuntimeException("IllegalStateException not thrown as expected");
} catch (IllegalStateException x) {
}
// test that iterator reads to end of stream when closed
stream = newDirectoryStream(dir);
i = stream.iterator();
stream.close();
while (i.hasNext())
i.next();
stream = newDirectoryStream(dir);
i = stream.iterator();
stream.close();
try {
for (;;) i.next();
} catch (NoSuchElementException expected) { }
}
public static void main(String[] args) throws IOException {
Path dir = TestUtil.createTemporaryDirectory();
try {
doTest(dir);
} finally {
TestUtil.removeAll(dir);
}
}
}
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