delegate) {
+ super(delegate);
+ this.closeable = c;
+ }
+
+ public void close() {
+ try {
+ closeable.close();
+ } catch (IOException ex) {
+ throw new UncheckedIOException(ex);
+ }
+ }
+ }
+
+ /**
+ * Return a lazily populated {@code CloseableStream}, the elements of
+ * which are the entries in the directory. The listing is not recursive.
+ *
+ * The elements of the stream are {@link Path} objects that are
+ * obtained as if by {@link Path#resolve(Path) resolving} the name of the
+ * directory entry against {@code dir}. Some file systems maintain special
+ * links to the directory itself and the directory's parent directory.
+ * Entries representing these links are not included.
+ *
+ *
The stream is weakly consistent. It is thread safe but does
+ * not freeze the directory while iterating, so it may (or may not)
+ * reflect updates to the directory that occur after returning from this
+ * method.
+ *
+ *
When not using the try-with-resources construct, then the stream's
+ * {@link CloseableStream#close close} method should be invoked after the
+ * operation is completed so as to free any resources held for the open
+ * directory. Operating on a closed stream behaves as if the end of stream
+ * has been reached. Due to read-ahead, one or more elements may be
+ * returned after the stream has been closed.
+ *
+ *
If an {@link IOException} is thrown when accessing the directory
+ * after this method has returned, it is wrapped in an {@link
+ * UncheckedIOException} which will be thrown from the method that caused
+ * the access to take place.
+ *
+ * @param dir The path to the directory
+ *
+ * @return The {@code CloseableStream} describing the content of the
+ * directory
+ *
+ * @throws NotDirectoryException
+ * if the file could not otherwise be opened because it is not
+ * a directory (optional specific exception)
+ * @throws IOException
+ * if an I/O error occurs when opening the directory
+ * @throws SecurityException
+ * In the case of the default provider, and a security manager is
+ * installed, the {@link SecurityManager#checkRead(String) checkRead}
+ * method is invoked to check read access to the directory.
+ *
+ * @see #newDirectoryStream(Path)
+ * @since 1.8
+ */
+ public static CloseableStream list(Path dir) throws IOException {
+ DirectoryStream ds = Files.newDirectoryStream(dir);
+ final Iterator delegate = ds.iterator();
+
+ // Re-wrap DirectoryIteratorException to UncheckedIOException
+ Iterator it = new Iterator() {
+ public boolean hasNext() {
+ try {
+ return delegate.hasNext();
+ } catch (DirectoryIteratorException e) {
+ throw new UncheckedIOException(e.getCause());
+ }
+ }
+ public Path next() {
+ try {
+ return delegate.next();
+ } catch (DirectoryIteratorException e) {
+ throw new UncheckedIOException(e.getCause());
+ }
+ }
+ };
+
+ return new DelegatingCloseableStream<>(ds,
+ StreamSupport.stream(Spliterators.spliteratorUnknownSize(it,
+ Spliterator.DISTINCT)));
+ }
+
+ /**
+ * Return a {@code CloseableStream} that is lazily populated with {@code
+ * Path} by walking the file tree rooted at a given starting file. The
+ * file tree is traversed depth-first, the elements in the stream
+ * are {@link Path} objects that are obtained as if by {@link
+ * Path#resolve(Path) resolving} the relative path against {@code start}.
+ *
+ * The {@code stream} walks the file tree as elements are consumed.
+ * The {@code CloseableStream} returned is guaranteed to have at least one
+ * element, the starting file itself. For each file visited, the stream
+ * attempts to read its {@link BasicFileAttributes}. If the file is a
+ * directory and can be opened successfully, entries in the directory, and
+ * their descendants will follow the directory in the stream as
+ * they are encountered. When all entries have been visited, then the
+ * directory is closed. The file tree walk then continues at the next
+ * sibling of the directory.
+ *
+ *
The stream is weakly consistent. It does not freeze the
+ * file tree while iterating, so it may (or may not) reflect updates to
+ * the file tree that occur after returned from this method.
+ *
+ *
By default, symbolic links are not automatically followed by this
+ * method. If the {@code options} parameter contains the {@link
+ * FileVisitOption#FOLLOW_LINKS FOLLOW_LINKS} option then symbolic links are
+ * followed. When following links, and the attributes of the target cannot
+ * be read, then this method attempts to get the {@code BasicFileAttributes}
+ * of the link.
+ *
+ *
If the {@code options} parameter contains the {@link
+ * FileVisitOption#FOLLOW_LINKS FOLLOW_LINKS} option then the stream keeps
+ * track of directories visited so that cycles can be detected. A cycle
+ * arises when there is an entry in a directory that is an ancestor of the
+ * directory. Cycle detection is done by recording the {@link
+ * java.nio.file.attribute.BasicFileAttributes#fileKey file-key} of directories,
+ * or if file keys are not available, by invoking the {@link #isSameFile
+ * isSameFile} method to test if a directory is the same file as an
+ * ancestor. When a cycle is detected it is treated as an I/O error with
+ * an instance of {@link FileSystemLoopException}.
+ *
+ *
The {@code maxDepth} parameter is the maximum number of levels of
+ * directories to visit. A value of {@code 0} means that only the starting
+ * file is visited, unless denied by the security manager. A value of
+ * {@link Integer#MAX_VALUE MAX_VALUE} may be used to indicate that all
+ * levels should be visited.
+ *
+ *
When a security manager is installed and it denies access to a file
+ * (or directory), then it is ignored and not included in the stream.
+ *
+ *
When not using the try-with-resources construct, then the stream's
+ * {@link CloseableStream#close close} method should be invoked after the
+ * operation is completed so as to free any resources held for the open
+ * directory. Operate the stream after it is closed will throw an
+ * {@link java.lang.IllegalStateException}.
+ *
+ *
If an {@link IOException} is thrown when accessing the directory
+ * after this method has returned, it is wrapped in an {@link
+ * UncheckedIOException} which will be thrown from the method that caused
+ * the access to take place.
+ *
+ * @param start
+ * the starting file
+ * @param maxDepth
+ * the maximum number of directory levels to visit
+ * @param options
+ * options to configure the traversal
+ *
+ * @return the {@link CloseableStream} of {@link Path}
+ *
+ * @throws IllegalArgumentException
+ * if the {@code maxDepth} parameter is negative
+ * @throws SecurityException
+ * If the security manager denies access to the starting file.
+ * In the case of the default provider, the {@link
+ * SecurityManager#checkRead(String) checkRead} method is invoked
+ * to check read access to the directory.
+ * @throws IOException
+ * if an I/O error is thrown when accessing the starting file.
+ * @since 1.8
+ */
+ public static CloseableStream walk(Path start, int maxDepth,
+ FileVisitOption... options)
+ throws IOException
+ {
+ FileTreeIterator iterator = new FileTreeIterator(start, maxDepth, options);
+ return new DelegatingCloseableStream<>(iterator,
+ StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, Spliterator.DISTINCT))
+ .map(entry -> entry.file()));
+ }
+
+ /**
+ * Return a {@code CloseableStream} that is lazily populated with {@code
+ * Path} by walking the file tree rooted at a given starting file. The
+ * file tree is traversed depth-first, the elements in the stream
+ * are {@link Path} objects that are obtained as if by {@link
+ * Path#resolve(Path) resolving} the relative path against {@code start}.
+ *
+ * This method works as if invoking it were equivalent to evaluating the
+ * expression:
+ *
+ * walk(start, Integer.MAX_VALUE, options)
+ *
+ * In other words, it visits all levels of the file tree.
+ *
+ * @param start
+ * the starting file
+ * @param options
+ * options to configure the traversal
+ *
+ * @return the {@link CloseableStream} of {@link Path}
+ *
+ * @throws SecurityException
+ * If the security manager denies access to the starting file.
+ * In the case of the default provider, the {@link
+ * SecurityManager#checkRead(String) checkRead} method is invoked
+ * to check read access to the directory.
+ * @throws IOException
+ * if an I/O error is thrown when accessing the starting file.
+ *
+ * @see #walk(Path, int, FileVisitOption...)
+ * @since 1.8
+ */
+ public static CloseableStream walk(Path start,
+ FileVisitOption... options)
+ throws IOException
+ {
+ return walk(start, Integer.MAX_VALUE, options);
+ }
+
+ /**
+ * Return a {@code CloseableStream} that is lazily populated with {@code
+ * Path} by searching for files in a file tree rooted at a given starting
+ * file.
+ *
+ * This method walks the file tree in exactly the manner specified by
+ * the {@link #walk walk} method. For each file encountered, the given
+ * {@link BiPredicate} is invoked with its {@link Path} and {@link
+ * BasicFileAttributes}. The {@code Path} object is obtained as if by
+ * {@link Path#resolve(Path) resolving} the relative path against {@code
+ * start} and is only included in the returned {@link CloseableStream} if
+ * the {@code BiPredicate} returns true. Compare to calling {@link
+ * java.util.stream.Stream#filter filter} on the {@code Stream}
+ * returned by {@code walk} method, this method may be more efficient by
+ * avoiding redundant retrieval of the {@code BasicFileAttributes}.
+ *
+ *
If an {@link IOException} is thrown when accessing the directory
+ * after returned from this method, it is wrapped in an {@link
+ * UncheckedIOException} which will be thrown from the method that caused
+ * the access to take place.
+ *
+ * @param start
+ * the starting file
+ * @param maxDepth
+ * the maximum number of directory levels to search
+ * @param matcher
+ * the function used to decide whether a file should be included
+ * in the returned stream
+ * @param options
+ * options to configure the traversal
+ *
+ * @return the {@link CloseableStream} of {@link Path}
+ *
+ * @throws IllegalArgumentException
+ * if the {@code maxDepth} parameter is negative
+ * @throws SecurityException
+ * If the security manager denies access to the starting file.
+ * In the case of the default provider, the {@link
+ * SecurityManager#checkRead(String) checkRead} method is invoked
+ * to check read access to the directory.
+ * @throws IOException
+ * if an I/O error is thrown when accessing the starting file.
+ *
+ * @see #walk(Path, int, FileVisitOption...)
+ * @since 1.8
+ */
+ public static CloseableStream find(Path start,
+ int maxDepth,
+ BiPredicate matcher,
+ FileVisitOption... options)
+ throws IOException
+ {
+ FileTreeIterator iterator = new FileTreeIterator(start, maxDepth, options);
+ return new DelegatingCloseableStream<>(iterator,
+ StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, Spliterator.DISTINCT))
+ .filter(entry -> matcher.test(entry.file(), entry.attributes()))
+ .map(entry -> entry.file()));
+ }
+
+ /**
+ * Read all lines from a file as a {@code CloseableStream}. Unlike {@link
+ * #readAllLines(Path, Charset) readAllLines}, this method does not read
+ * all lines into a {@code List}, but instead populates lazily as the stream
+ * is consumed.
+ *
+ * Bytes from the file are decoded into characters using the specified
+ * charset and the same line terminators as specified by {@code
+ * readAllLines} are supported.
+ *
+ *
After this method returns, then any subsequent I/O exception that
+ * occurs while reading from the file or when a malformed or unmappable byte
+ * sequence is read, is wrapped in an {@link UncheckedIOException} that will
+ * be thrown form the
+ * {@link java.util.stream.Stream} method that caused the read to take
+ * place. In case an {@code IOException} is thrown when closing the file,
+ * it is also wrapped as an {@code UncheckedIOException}.
+ *
+ *
When not using the try-with-resources construct, then stream's
+ * {@link CloseableStream#close close} method should be invoked after
+ * operation is completed so as to free any resources held for the open
+ * file.
+ *
+ * @param path
+ * the path to the file
+ * @param cs
+ * the charset to use for decoding
+ *
+ * @return the lines from the file as a {@code CloseableStream}
+ *
+ * @throws IOException
+ * if an I/O error occurs opening the file
+ * @throws SecurityException
+ * In the case of the default provider, and a security manager is
+ * installed, the {@link SecurityManager#checkRead(String) checkRead}
+ * method is invoked to check read access to the file.
+ *
+ * @see #readAllLines(Path, Charset)
+ * @see #newBufferedReader(Path, Charset)
+ * @see java.io.BufferedReader#lines()
+ * @since 1.8
+ */
+ public static CloseableStream lines(Path path, Charset cs)
+ throws IOException
+ {
+ BufferedReader br = Files.newBufferedReader(path, cs);
+ return new DelegatingCloseableStream<>(br, br.lines());
+ }
}
diff -r 032254f2467b -r 23a863fbb6c3 jdk/test/java/nio/file/Files/FaultyFileSystem.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/nio/file/Files/FaultyFileSystem.java Thu May 09 14:44:56 2013 -0700
@@ -0,0 +1,499 @@
+/*
+ * Copyright (c) 2013, 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.
+ */
+
+import java.io.IOException;
+import java.net.URI;
+import java.nio.channels.SeekableByteChannel;
+import java.nio.file.AccessMode;
+import java.nio.file.CopyOption;
+import java.nio.file.DirectoryIteratorException;
+import java.nio.file.DirectoryStream;
+import java.nio.file.FileStore;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystemAlreadyExistsException;
+import java.nio.file.FileSystemNotFoundException;
+import java.nio.file.Files;
+import java.nio.file.LinkOption;
+import java.nio.file.NoSuchFileException;
+import java.nio.file.OpenOption;
+import java.nio.file.Path;
+import java.nio.file.PathMatcher;
+import java.nio.file.WatchService;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.nio.file.attribute.FileAttribute;
+import java.nio.file.attribute.FileAttributeView;
+import java.nio.file.attribute.UserPrincipalLookupService;
+import java.nio.file.spi.FileSystemProvider;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.NoSuchElementException;
+import java.util.Set;
+import java.util.function.Supplier;
+
+/**
+ * A {@code FileSystem} that helps testing by trigger exception throwing based on filenames.
+ */
+class FaultyFileSystem extends FileSystem {
+ final Path root;
+ final boolean removeRootAfterClose;
+ final FileSystem delegate;
+ boolean isOpen;
+
+ FaultyFileSystem(Path root) throws IOException {
+ if (root == null) {
+ root = Files.createTempDirectory("faultyFS");
+ removeRootAfterClose = true;
+ } else {
+ if (! Files.isDirectory(root)) {
+ throw new IllegalArgumentException("must be a directory.");
+ }
+ removeRootAfterClose = false;
+ }
+ this.root = root;
+ delegate = root.getFileSystem();
+ isOpen = true;
+ }
+
+ private static Path unwrap(Path p) {
+ return PassThroughFileSystem.unwrap(p);
+ }
+
+ Path getRoot() {
+ return new PassThroughFileSystem.PassThroughPath(this, root);
+ }
+
+ @Override
+ public void close() throws IOException {
+ if (isOpen) {
+ if (removeRootAfterClose) {
+ TestUtil.removeAll(root);
+ }
+ isOpen = false;
+ }
+ }
+
+ @Override
+ public FileSystemProvider provider() {
+ return FaultyFSProvider.getInstance();
+ }
+
+ @Override
+ public boolean isOpen() {
+ return isOpen;
+ }
+
+ @Override
+ public boolean isReadOnly() {
+ return delegate.isReadOnly();
+ }
+
+ @Override
+ public String getSeparator() {
+ return delegate.getSeparator();
+ }
+
+ private Iterable SoleIterable(final T element) {
+ return new Iterable() {
+ @Override
+ public Iterator iterator() {
+ return new Iterator() {
+ private T soleElement = element;
+
+ @Override
+ public boolean hasNext() {
+ return soleElement != null;
+ }
+
+ @Override
+ public T next() {
+ try {
+ return soleElement;
+ } finally {
+ soleElement = null;
+ }
+ }
+ };
+ }
+ };
+ }
+
+ @Override
+ public Iterable getRootDirectories() {
+ return SoleIterable(getRoot());
+ }
+
+ @Override
+ public Iterable getFileStores() {
+ FileStore store;
+ try {
+ store = Files.getFileStore(root);
+ } catch (IOException ioe) {
+ store = null;
+ }
+ return SoleIterable(store);
+ }
+
+ @Override
+ public Set supportedFileAttributeViews() {
+ // assume that unwrapped objects aren't exposed
+ return delegate.supportedFileAttributeViews();
+ }
+
+ @Override
+ public Path getPath(String first, String... more) {
+ return new PassThroughFileSystem.PassThroughPath(this, delegate.getPath(first, more));
+ }
+
+ @Override
+ public PathMatcher getPathMatcher(String syntaxAndPattern) {
+ final PathMatcher matcher = delegate.getPathMatcher(syntaxAndPattern);
+ return new PathMatcher() {
+ @Override
+ public boolean matches(Path path) {
+ return matcher.matches(unwrap(path));
+ }
+ };
+ }
+
+ @Override
+ public UserPrincipalLookupService getUserPrincipalLookupService() {
+ // assume that unwrapped objects aren't exposed
+ return delegate.getUserPrincipalLookupService();
+ }
+
+ @Override
+ public WatchService newWatchService() throws IOException {
+ // to keep it simple
+ throw new UnsupportedOperationException();
+ }
+
+ static class FaultyException extends IOException {
+ FaultyException() {
+ super("fault triggered.");
+ }
+ }
+
+ static class FaultyFSProvider extends FileSystemProvider {
+ private static final String SCHEME = "faulty";
+ private static volatile FaultyFileSystem delegate;
+ private static FaultyFSProvider INSTANCE = new FaultyFSProvider();
+ private boolean enabled;
+
+ private FaultyFSProvider() {}
+
+ public static FaultyFSProvider getInstance() {
+ return INSTANCE;
+ }
+
+ public void setFaultyMode(boolean enable) {
+ enabled = enable;
+ }
+
+ private void triggerEx(String filename, String... names) throws IOException {
+ if (! enabled) {
+ return;
+ }
+
+ if (filename.equals("SecurityException")) {
+ throw new SecurityException("FaultyFS", new FaultyException());
+ }
+
+ if (filename.equals("IOException")) {
+ throw new FaultyException();
+ }
+
+ for (String name: names) {
+ if (name.equals(filename)) {
+ throw new FaultyException();
+ }
+ }
+ }
+
+ private void triggerEx(Path path, String... names) throws IOException {
+ triggerEx(path.getFileName().toString(), names);
+ }
+
+ @Override
+ public String getScheme() {
+ return SCHEME;
+ }
+
+ private void checkScheme(URI uri) {
+ if (!uri.getScheme().equalsIgnoreCase(SCHEME))
+ throw new IllegalArgumentException();
+ }
+
+ private void checkUri(URI uri) {
+ checkScheme(uri);
+ if (!uri.getSchemeSpecificPart().equals("///"))
+ throw new IllegalArgumentException();
+ }
+
+ @Override
+ public FileSystem newFileSystem(Path fakeRoot, Map env)
+ throws IOException
+ {
+ if (env != null && env.keySet().contains("IOException")) {
+ triggerEx("IOException");
+ }
+
+ synchronized (FaultyFSProvider.class) {
+ if (delegate != null && delegate.isOpen())
+ throw new FileSystemAlreadyExistsException();
+ FaultyFileSystem result = new FaultyFileSystem(fakeRoot);
+ delegate = result;
+ return result;
+ }
+ }
+
+ @Override
+ public FileSystem newFileSystem(URI uri, Map env)
+ throws IOException
+ {
+ if (env != null && env.keySet().contains("IOException")) {
+ triggerEx("IOException");
+ }
+
+ checkUri(uri);
+ synchronized (FaultyFSProvider.class) {
+ if (delegate != null && delegate.isOpen())
+ throw new FileSystemAlreadyExistsException();
+ FaultyFileSystem result = new FaultyFileSystem(null);
+ delegate = result;
+ return result;
+ }
+ }
+
+ @Override
+ public FileSystem getFileSystem(URI uri) {
+ checkUri(uri);
+ FileSystem result = delegate;
+ if (result == null)
+ throw new FileSystemNotFoundException();
+ return result;
+ }
+
+ @Override
+ public Path getPath(URI uri) {
+ checkScheme(uri);
+ if (delegate == null)
+ throw new FileSystemNotFoundException();
+
+ // only allow absolute path
+ String path = uri.getSchemeSpecificPart();
+ if (! path.startsWith("///")) {
+ throw new IllegalArgumentException();
+ }
+ return new PassThroughFileSystem.PassThroughPath(delegate, delegate.root.resolve(path.substring(3)));
+ }
+
+ @Override
+ public void setAttribute(Path file, String attribute, Object value, LinkOption... options)
+ throws IOException
+ {
+ triggerEx(file, "setAttribute");
+ Files.setAttribute(unwrap(file), attribute, value, options);
+ }
+
+ @Override
+ public Map readAttributes(Path file, String attributes, LinkOption... options)
+ throws IOException
+ {
+ triggerEx(file, "readAttributes");
+ return Files.readAttributes(unwrap(file), attributes, options);
+ }
+
+ @Override
+ public V getFileAttributeView(Path file,
+ Class type,
+ LinkOption... options)
+ {
+ return Files.getFileAttributeView(unwrap(file), type, options);
+ }
+
+ @Override
+ public A readAttributes(Path file,
+ Class type,
+ LinkOption... options)
+ throws IOException
+ {
+ triggerEx(file, "readAttributes");
+ return Files.readAttributes(unwrap(file), type, options);
+ }
+
+ @Override
+ public void delete(Path file) throws IOException {
+ triggerEx(file, "delete");
+ Files.delete(unwrap(file));
+ }
+
+ @Override
+ public void createSymbolicLink(Path link, Path target, FileAttribute... attrs)
+ throws IOException
+ {
+ triggerEx(target, "createSymbolicLink");
+ Files.createSymbolicLink(unwrap(link), unwrap(target), attrs);
+ }
+
+ @Override
+ public void createLink(Path link, Path existing) throws IOException {
+ triggerEx(existing, "createLink");
+ Files.createLink(unwrap(link), unwrap(existing));
+ }
+
+ @Override
+ public Path readSymbolicLink(Path link) throws IOException {
+ Path target = Files.readSymbolicLink(unwrap(link));
+ triggerEx(target, "readSymbolicLink");
+ return new PassThroughFileSystem.PassThroughPath(delegate, target);
+ }
+
+
+ @Override
+ public void copy(Path source, Path target, CopyOption... options) throws IOException {
+ triggerEx(source, "copy");
+ Files.copy(unwrap(source), unwrap(target), options);
+ }
+
+ @Override
+ public void move(Path source, Path target, CopyOption... options) throws IOException {
+ triggerEx(source, "move");
+ Files.move(unwrap(source), unwrap(target), options);
+ }
+
+ private DirectoryStream wrap(final DirectoryStream stream) {
+ return new DirectoryStream() {
+ @Override
+ public Iterator iterator() {
+ final Iterator itr = stream.iterator();
+ return new Iterator() {
+ private Path next = null;
+ @Override
+ public boolean hasNext() {
+ if (next == null) {
+ if (itr.hasNext()) {
+ next = itr.next();
+ } else {
+ return false;
+ }
+ }
+ if (next != null) {
+ try {
+ triggerEx(next, "DirectoryIteratorException");
+ } catch (IOException ioe) {
+ throw new DirectoryIteratorException(ioe);
+ } catch (SecurityException se) {
+ // ??? Does DS throw SecurityException during iteration?
+ next = null;
+ return hasNext();
+ }
+ }
+ return (next != null);
+ }
+ @Override
+ public Path next() {
+ try {
+ if (next != null || hasNext()) {
+ return new PassThroughFileSystem.PassThroughPath(delegate, next);
+ } else {
+ throw new NoSuchElementException();
+ }
+ } finally {
+ next = null;
+ }
+ }
+
+ @Override
+ public void remove() {
+ itr.remove();
+ }
+ };
+ }
+ @Override
+ public void close() throws IOException {
+ stream.close();
+ }
+ };
+ }
+
+ @Override
+ public DirectoryStream newDirectoryStream(Path dir, DirectoryStream.Filter filter)
+ throws IOException
+ {
+ triggerEx(dir, "newDirectoryStream");
+ return wrap(Files.newDirectoryStream(unwrap(dir), filter));
+ }
+
+ @Override
+ public void createDirectory(Path dir, FileAttribute... attrs)
+ throws IOException
+ {
+ triggerEx(dir, "createDirectory");
+ Files.createDirectory(unwrap(dir), attrs);
+ }
+
+ @Override
+ public SeekableByteChannel newByteChannel(Path file,
+ Set options,
+ FileAttribute... attrs)
+ throws IOException
+ {
+ triggerEx(file, "newByteChannel");
+ return Files.newByteChannel(unwrap(file), options, attrs);
+ }
+
+
+ @Override
+ public boolean isHidden(Path file) throws IOException {
+ triggerEx(file, "isHidden");
+ return Files.isHidden(unwrap(file));
+ }
+
+ @Override
+ public FileStore getFileStore(Path file) throws IOException {
+ triggerEx(file, "getFileStore");
+ return Files.getFileStore(unwrap(file));
+ }
+
+ @Override
+ public boolean isSameFile(Path file, Path other) throws IOException {
+ triggerEx(file, "isSameFile");
+ return Files.isSameFile(unwrap(file), unwrap(other));
+ }
+
+ @Override
+ public void checkAccess(Path file, AccessMode... modes)
+ throws IOException
+ {
+ triggerEx(file, "checkAccess");
+ // hack
+ if (modes.length == 0) {
+ if (Files.exists(unwrap(file)))
+ return;
+ else
+ throw new NoSuchFileException(file.toString());
+ }
+ throw new RuntimeException("not implemented yet");
+ }
+ }
+}
diff -r 032254f2467b -r 23a863fbb6c3 jdk/test/java/nio/file/Files/PassThroughFileSystem.java
--- a/jdk/test/java/nio/file/Files/PassThroughFileSystem.java Fri May 17 10:36:04 2013 -0700
+++ b/jdk/test/java/nio/file/Files/PassThroughFileSystem.java Thu May 09 14:44:56 2013 -0700
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2013, 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
@@ -304,7 +304,7 @@
public DirectoryStream newDirectoryStream(Path dir, DirectoryStream.Filter filter)
throws IOException
{
- return wrap(Files.newDirectoryStream(dir, filter));
+ return wrap(Files.newDirectoryStream(unwrap(dir), filter));
}
@Override
diff -r 032254f2467b -r 23a863fbb6c3 jdk/test/java/nio/file/Files/StreamTest.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/nio/file/Files/StreamTest.java Thu May 09 14:44:56 2013 -0700
@@ -0,0 +1,621 @@
+/*
+ * Copyright (c) 2013, 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 8006884
+ * @summary Unit test for java.nio.file.Files
+ * @library ..
+ * @build PassThroughFileSystem FaultyFileSystem
+ * @run testng StreamTest
+ */
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.nio.charset.Charset;
+import java.nio.charset.MalformedInputException;
+import java.nio.file.DirectoryIteratorException;
+import java.nio.file.DirectoryStream;
+import java.nio.file.FileSystemLoopException;
+import java.nio.file.FileVisitOption;
+import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.Arrays;
+import java.util.Comparators;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.function.BiPredicate;
+import java.util.stream.CloseableStream;
+import java.util.stream.Collectors;
+import org.testng.annotations.AfterClass;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+@Test(groups = "unit")
+public class StreamTest {
+ /**
+ * Default test folder
+ * testFolder - empty
+ * - file
+ * - dir - d1
+ * - f1
+ * - lnDir2 (../dir2)
+ * - dir2
+ * - linkDir (./dir)
+ * - linkFile(./file)
+ */
+ static Path testFolder;
+ static boolean supportsLinks;
+ static Path[] level1;
+ static Path[] all;
+ static Path[] all_folowLinks;
+
+ @BeforeClass
+ void setupTestFolder() throws IOException {
+ testFolder = TestUtil.createTemporaryDirectory();
+ supportsLinks = TestUtil.supportsLinks(testFolder);
+ TreeSet set = new TreeSet<>();
+
+ // Level 1
+ Path empty = testFolder.resolve("empty");
+ Path file = testFolder.resolve("file");
+ Path dir = testFolder.resolve("dir");
+ Path dir2 = testFolder.resolve("dir2");
+ Files.createDirectory(empty);
+ Files.createFile(file);
+ Files.createDirectory(dir);
+ Files.createDirectory(dir2);
+ set.add(empty);
+ set.add(file);
+ set.add(dir);
+ set.add(dir2);
+ if (supportsLinks) {
+ Path tmp = testFolder.resolve("linkDir");
+ Files.createSymbolicLink(tmp, dir);
+ set.add(tmp);
+ tmp = testFolder.resolve("linkFile");
+ Files.createSymbolicLink(tmp, file);
+ set.add(tmp);
+ }
+ level1 = set.toArray(new Path[0]);
+
+ // Level 2
+ Path tmp = dir.resolve("d1");
+ Files.createDirectory(tmp);
+ set.add(tmp);
+ tmp = dir.resolve("f1");
+ Files.createFile(tmp);
+ set.add(tmp);
+ if (supportsLinks) {
+ tmp = dir.resolve("lnDir2");
+ Files.createSymbolicLink(tmp, dir2);
+ set.add(tmp);
+ }
+ // walk include starting folder
+ set.add(testFolder);
+ all = set.toArray(new Path[0]);
+
+ // Follow links
+ if (supportsLinks) {
+ tmp = testFolder.resolve("linkDir");
+ set.add(tmp.resolve("d1"));
+ set.add(tmp.resolve("f1"));
+ tmp = tmp.resolve("lnDir2");
+ set.add(tmp);
+ }
+ all_folowLinks = set.toArray(new Path[0]);
+ }
+
+ @AfterClass
+ void cleanupTestFolder() throws IOException {
+ TestUtil.removeAll(testFolder);
+ }
+
+ public void testBasic() {
+ try (CloseableStream s = Files.list(testFolder)) {
+ Object[] actual = s.sorted(Comparators.naturalOrder()).toArray();
+ assertEquals(actual, level1);
+ } catch (IOException ioe) {
+ fail("Unexpected IOException");
+ }
+
+ try (CloseableStream s = Files.list(testFolder.resolve("empty"))) {
+ int count = s.mapToInt(p -> 1).reduce(0, Integer::sum);
+ assertEquals(count, 0, "Expect empty stream.");
+ } catch (IOException ioe) {
+ fail("Unexpected IOException");
+ }
+ }
+
+ public void testWalk() {
+ try (CloseableStream s = Files.walk(testFolder)) {
+ Object[] actual = s.sorted(Comparators.naturalOrder()).toArray();
+ assertEquals(actual, all);
+ } catch (IOException ioe) {
+ fail("Unexpected IOException");
+ }
+ }
+
+ public void testWalkOneLevel() {
+ try (CloseableStream s = Files.walk(testFolder, 1)) {
+ Object[] actual = s.filter(path -> ! path.equals(testFolder))
+ .sorted(Comparators.naturalOrder())
+ .toArray();
+ assertEquals(actual, level1);
+ } catch (IOException ioe) {
+ fail("Unexpected IOException");
+ }
+ }
+
+ public void testWalkFollowLink() {
+ // If link is not supported, the directory structure won't have link.
+ // We still want to test the behavior with FOLLOW_LINKS option.
+ try (CloseableStream s = Files.walk(testFolder, FileVisitOption.FOLLOW_LINKS)) {
+ Object[] actual = s.sorted(Comparators.naturalOrder()).toArray();
+ assertEquals(actual, all_folowLinks);
+ } catch (IOException ioe) {
+ fail("Unexpected IOException");
+ }
+ }
+
+ private void validateFileSystemLoopException(Path start, Path... causes) {
+ try (CloseableStream s = Files.walk(start, FileVisitOption.FOLLOW_LINKS)) {
+ try {
+ int count = s.mapToInt(p -> 1).reduce(0, Integer::sum);
+ fail("Should got FileSystemLoopException, but got " + count + "elements.");
+ } catch (UncheckedIOException uioe) {
+ IOException ioe = uioe.getCause();
+ if (ioe instanceof FileSystemLoopException) {
+ FileSystemLoopException fsle = (FileSystemLoopException) ioe;
+ boolean match = false;
+ for (Path cause: causes) {
+ if (fsle.getFile().equals(cause.toString())) {
+ match = true;
+ break;
+ }
+ }
+ assertTrue(match);
+ } else {
+ fail("Unexpected UncheckedIOException cause " + ioe.toString());
+ }
+ }
+ } catch(IOException ex) {
+ fail("Unexpected IOException " + ex);
+ }
+ }
+
+ public void testWalkFollowLinkLoop() {
+ if (!supportsLinks) {
+ return;
+ }
+
+ // Loops.
+ try {
+ Path dir = testFolder.resolve("dir");
+ Path linkdir = testFolder.resolve("linkDir");
+ Path d1 = dir.resolve("d1");
+ Path cause = d1.resolve("lnSelf");
+ Files.createSymbolicLink(cause, d1);
+
+ // loop in descendant.
+ validateFileSystemLoopException(dir, cause);
+ // loop in self
+ validateFileSystemLoopException(d1, cause);
+ // start from other place via link
+ validateFileSystemLoopException(linkdir,
+ linkdir.resolve(Paths.get("d1", "lnSelf")));
+ Files.delete(cause);
+
+ // loop to parent.
+ cause = d1.resolve("lnParent");
+ Files.createSymbolicLink(cause, dir);
+
+ // loop should be detected at test/dir/d1/lnParent/d1
+ validateFileSystemLoopException(d1, cause.resolve("d1"));
+ // loop should be detected at link
+ validateFileSystemLoopException(dir, cause);
+ // loop should be detected at test/linkdir/d1/lnParent
+ // which is test/dir we have visited via test/linkdir
+ validateFileSystemLoopException(linkdir,
+ linkdir.resolve(Paths.get("d1", "lnParent")));
+ Files.delete(cause);
+
+ // cross loop
+ Path dir2 = testFolder.resolve("dir2");
+ cause = dir2.resolve("lnDir");
+ Files.createSymbolicLink(cause, dir);
+ validateFileSystemLoopException(dir,
+ dir.resolve(Paths.get("lnDir2", "lnDir")));
+ validateFileSystemLoopException(dir2,
+ dir2.resolve(Paths.get("lnDir", "lnDir2")));
+ validateFileSystemLoopException(linkdir,
+ linkdir.resolve(Paths.get("lnDir2", "lnDir")));
+ } catch(IOException ioe) {
+ fail("Unexpected IOException " + ioe);
+ }
+ }
+
+ private static class PathBiPredicate implements BiPredicate {
+ private final BiPredicate pred;
+ private final Set visited = new TreeSet();
+
+ PathBiPredicate(BiPredicate pred) {
+ this.pred = Objects.requireNonNull(pred);
+ }
+
+ public boolean test(Path path, BasicFileAttributes attrs) {
+ visited.add(path);
+ return pred.test(path, attrs);
+ }
+
+ public Path[] visited() {
+ return visited.toArray(new Path[0]);
+ }
+ }
+
+ public void testFind() throws IOException {
+ PathBiPredicate pred = new PathBiPredicate((path, attrs) -> true);
+
+ try (CloseableStream s = Files.find(testFolder, Integer.MAX_VALUE, pred)) {
+ Set result = s.collect(Collectors.toCollection(TreeSet::new));
+ assertEquals(pred.visited(), all);
+ assertEquals(result.toArray(new Path[0]), pred.visited());
+ }
+
+ pred = new PathBiPredicate((path, attrs) -> attrs.isSymbolicLink());
+ try (CloseableStream s = Files.find(testFolder, Integer.MAX_VALUE, pred)) {
+ s.forEach(path -> assertTrue(Files.isSymbolicLink(path)));
+ assertEquals(pred.visited(), all);
+ }
+
+ pred = new PathBiPredicate((path, attrs) ->
+ path.getFileName().toString().startsWith("e"));
+ try (CloseableStream s = Files.find(testFolder, Integer.MAX_VALUE, pred)) {
+ s.forEach(path -> assertEquals(path.getFileName().toString(), "empty"));
+ assertEquals(pred.visited(), all);
+ }
+
+ pred = new PathBiPredicate((path, attrs) ->
+ path.getFileName().toString().startsWith("l") && attrs.isRegularFile());
+ try (CloseableStream s = Files.find(testFolder, Integer.MAX_VALUE, pred)) {
+ s.forEach(path -> fail("Expect empty stream"));
+ assertEquals(pred.visited(), all);
+ }
+ }
+
+ // Test borrowed from BytesAndLines
+ public void testLines() throws IOException {
+ final Charset US_ASCII = Charset.forName("US-ASCII");
+ Path tmpfile = Files.createTempFile("blah", "txt");
+
+ try {
+ // zero lines
+ assertTrue(Files.size(tmpfile) == 0, "File should be empty");
+ try (CloseableStream s = Files.lines(tmpfile, US_ASCII)) {
+ assertEquals(s.mapToInt(l -> 1).reduce(0, Integer::sum), 0, "No line expected");
+ }
+
+ // one line
+ byte[] hi = { (byte)'h', (byte)'i' };
+ Files.write(tmpfile, hi);
+ try (CloseableStream s = Files.lines(tmpfile, US_ASCII)) {
+ List lines = s.collect(Collectors.toList());
+ assertTrue(lines.size() == 1, "One line expected");
+ assertTrue(lines.get(0).equals("hi"), "'Hi' expected");
+ }
+
+ // two lines using platform's line separator
+ List expected = Arrays.asList("hi", "there");
+ Files.write(tmpfile, expected, US_ASCII);
+ assertTrue(Files.size(tmpfile) > 0, "File is empty");
+ try (CloseableStream s = Files.lines(tmpfile, US_ASCII)) {
+ List lines = s.collect(Collectors.toList());
+ assertTrue(lines.equals(expected), "Unexpected lines");
+ }
+
+ // MalformedInputException
+ byte[] bad = { (byte)0xff, (byte)0xff };
+ Files.write(tmpfile, bad);
+ try (CloseableStream s = Files.lines(tmpfile, US_ASCII)) {
+ try {
+ List lines = s.collect(Collectors.toList());
+ throw new RuntimeException("UncheckedIOException expected");
+ } catch (UncheckedIOException ex) {
+ assertTrue(ex.getCause() instanceof MalformedInputException,
+ "MalformedInputException expected");
+ }
+ }
+
+ // NullPointerException
+ try {
+ Files.lines(null, US_ASCII);
+ throw new RuntimeException("NullPointerException expected");
+ } catch (NullPointerException ignore) { }
+ try {
+ Files.lines(tmpfile, null);
+ throw new RuntimeException("NullPointerException expected");
+ } catch (NullPointerException ignore) { }
+
+ } finally {
+ Files.delete(tmpfile);
+ }
+ }
+
+ public void testDirectoryIteratorException() throws IOException {
+ Path dir = testFolder.resolve("dir2");
+ Path trigger = dir.resolve("DirectoryIteratorException");
+ Files.createFile(trigger);
+ FaultyFileSystem.FaultyFSProvider fsp = FaultyFileSystem.FaultyFSProvider.getInstance();
+ FaultyFileSystem fs = (FaultyFileSystem) fsp.newFileSystem(dir, null);
+
+ try {
+ fsp.setFaultyMode(false);
+ Path fakeRoot = fs.getRoot();
+ try {
+ try (CloseableStream s = Files.list(fakeRoot)) {
+ s.forEach(path -> assertEquals(path.getFileName().toString(), "DirectoryIteratorException"));
+ }
+ } catch (UncheckedIOException uioe) {
+ fail("Unexpected exception.");
+ }
+
+ fsp.setFaultyMode(true);
+ try {
+ try (DirectoryStream ds = Files.newDirectoryStream(fakeRoot)) {
+ Iterator itor = ds.iterator();
+ while (itor.hasNext()) {
+ itor.next();
+ }
+ }
+ fail("Shoule throw DirectoryIteratorException");
+ } catch (DirectoryIteratorException die) {
+ }
+
+ try {
+ try (CloseableStream s = Files.list(fakeRoot)) {
+ s.forEach(path -> fail("should not get here"));
+ }
+ } catch (UncheckedIOException uioe) {
+ assertTrue(uioe.getCause() instanceof FaultyFileSystem.FaultyException);
+ } catch (DirectoryIteratorException die) {
+ fail("Should have been converted into UncheckedIOException.");
+ }
+ } finally {
+ // Cleanup
+ if (fs != null) {
+ fs.close();
+ }
+ Files.delete(trigger);
+ }
+ }
+
+ public void testUncheckedIOException() throws IOException {
+ Path triggerFile = testFolder.resolve(Paths.get("dir2", "IOException"));
+ Files.createFile(triggerFile);
+ Path triggerDir = testFolder.resolve(Paths.get("empty", "IOException"));
+ Files.createDirectories(triggerDir);
+ Files.createFile(triggerDir.resolve("file"));
+ FaultyFileSystem.FaultyFSProvider fsp = FaultyFileSystem.FaultyFSProvider.getInstance();
+ FaultyFileSystem fs = (FaultyFileSystem) fsp.newFileSystem(testFolder, null);
+
+ try {
+ fsp.setFaultyMode(false);
+ Path fakeRoot = fs.getRoot();
+ try (CloseableStream s = Files.list(fakeRoot.resolve("dir2"))) {
+ // only one file
+ s.forEach(path -> assertEquals(path.getFileName().toString(), "IOException"));
+ }
+
+ try (CloseableStream s = Files.walk(fakeRoot.resolve("empty"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ // ordered as depth-first
+ assertEquals(result, new String[] { "empty", "IOException", "file"});
+ }
+
+ fsp.setFaultyMode(true);
+ try (CloseableStream s = Files.list(fakeRoot.resolve("dir2"))) {
+ s.forEach(path -> fail("should have caused exception"));
+ } catch (UncheckedIOException uioe) {
+ assertTrue(uioe.getCause() instanceof FaultyFileSystem.FaultyException);
+ }
+
+ try (CloseableStream s = Files.walk(fakeRoot.resolve("empty"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ fail("should not reach here due to IOException");
+ } catch (UncheckedIOException uioe) {
+ assertTrue(uioe.getCause() instanceof FaultyFileSystem.FaultyException);
+ }
+
+ try (CloseableStream s = Files.walk(
+ fakeRoot.resolve("empty").resolve("IOException")))
+ {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ fail("should not reach here due to IOException");
+ } catch (IOException ioe) {
+ assertTrue(ioe instanceof FaultyFileSystem.FaultyException);
+ } catch (UncheckedIOException ex) {
+ fail("Top level should be repored as is");
+ }
+ } finally {
+ // Cleanup
+ if (fs != null) {
+ fs.close();
+ }
+ Files.delete(triggerFile);
+ TestUtil.removeAll(triggerDir);
+ }
+ }
+
+ public void testSecurityException() throws IOException {
+ Path triggerFile = testFolder.resolve(Paths.get("dir", "SecurityException"));
+ Files.createFile(triggerFile);
+ Path sampleFile = testFolder.resolve(Paths.get("dir", "sample"));
+ Files.createFile(sampleFile);
+ Path triggerDir = testFolder.resolve(Paths.get("dir2", "SecurityException"));
+ Files.createDirectories(triggerDir);
+ Files.createFile(triggerDir.resolve("fileInSE"));
+ Path sample = testFolder.resolve(Paths.get("dir2", "file"));
+ Files.createFile(sample);
+ FaultyFileSystem.FaultyFSProvider fsp = FaultyFileSystem.FaultyFSProvider.getInstance();
+ FaultyFileSystem fs = (FaultyFileSystem) fsp.newFileSystem(testFolder, null);
+
+ try {
+ fsp.setFaultyMode(false);
+ Path fakeRoot = fs.getRoot();
+ // validate setting
+ try (CloseableStream s = Files.list(fakeRoot.resolve("dir"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ assertEqualsNoOrder(result, new String[] { "d1","f1", "lnDir2", "SecurityException", "sample" });
+ }
+
+ try (CloseableStream s = Files.walk(fakeRoot.resolve("dir2"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ assertEqualsNoOrder(result, new String[] { "dir2", "SecurityException", "fileInSE", "file" });
+ }
+
+ // execute test
+ fsp.setFaultyMode(true);
+ // ignore file cause SecurityException
+ try (CloseableStream s = Files.walk(fakeRoot.resolve("dir"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ assertEqualsNoOrder(result, new String[] { "dir", "d1","f1", "lnDir2", "sample" });
+ }
+ // skip folder cause SecurityException
+ try (CloseableStream s = Files.walk(fakeRoot.resolve("dir2"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ assertEqualsNoOrder(result, new String[] { "dir2", "file" });
+ }
+
+ // list instead of walk
+ try (CloseableStream s = Files.list(fakeRoot.resolve("dir"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ assertEqualsNoOrder(result, new String[] { "d1","f1", "lnDir2", "sample" });
+ }
+ try (CloseableStream s = Files.list(fakeRoot.resolve("dir2"))) {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ assertEqualsNoOrder(result, new String[] { "file" });
+ }
+
+ // root cause SecurityException should be reported
+ try (CloseableStream s = Files.walk(
+ fakeRoot.resolve("dir2").resolve("SecurityException")))
+ {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ fail("should not reach here due to SecurityException");
+ } catch (SecurityException se) {
+ assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
+ }
+
+ // Walk a file cause SecurityException, we should get SE
+ try (CloseableStream s = Files.walk(
+ fakeRoot.resolve("dir").resolve("SecurityException")))
+ {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ fail("should not reach here due to SecurityException");
+ } catch (SecurityException se) {
+ assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
+ }
+
+ // List a file cause SecurityException, we should get SE as cannot read attribute
+ try (CloseableStream s = Files.list(
+ fakeRoot.resolve("dir2").resolve("SecurityException")))
+ {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ fail("should not reach here due to SecurityException");
+ } catch (SecurityException se) {
+ assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
+ }
+
+ try (CloseableStream s = Files.list(
+ fakeRoot.resolve("dir").resolve("SecurityException")))
+ {
+ String[] result = s.map(path -> path.getFileName().toString())
+ .toArray(String[]::new);
+ fail("should not reach here due to SecurityException");
+ } catch (SecurityException se) {
+ assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
+ }
+ } finally {
+ // Cleanup
+ if (fs != null) {
+ fs.close();
+ }
+ Files.delete(triggerFile);
+ Files.delete(sampleFile);
+ Files.delete(sample);
+ TestUtil.removeAll(triggerDir);
+ }
+ }
+
+ public void testConstructException() {
+ try (CloseableStream s = Files.lines(testFolder.resolve("notExist"), Charset.forName("UTF-8"))) {
+ s.forEach(l -> fail("File is not even exist!"));
+ } catch (IOException ioe) {
+ ioe.printStackTrace(System.err);
+ assertTrue(ioe instanceof NoSuchFileException);
+ }
+ }
+
+ public void testClosedStream() throws IOException {
+ try (CloseableStream s = Files.list(testFolder)) {
+ s.close();
+ Object[] actual = s.sorted(Comparators.naturalOrder()).toArray();
+ assertTrue(actual.length <= level1.length);
+ }
+
+ try (CloseableStream s = Files.walk(testFolder)) {
+ s.close();
+ Object[] actual = s.sorted(Comparators.naturalOrder()).toArray();
+ fail("Operate on closed stream should throw IllegalStateException");
+ } catch (IllegalStateException ex) {
+ // expected
+ }
+
+ try (CloseableStream s = Files.find(testFolder, Integer.MAX_VALUE,
+ (p, attr) -> true)) {
+ s.close();
+ Object[] actual = s.sorted(Comparators.naturalOrder()).toArray();
+ fail("Operate on closed stream should throw IllegalStateException");
+ } catch (IllegalStateException ex) {
+ // expected
+ }
+ }
+}