| /* |
| * Copyright (c) 2013, 2015, 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 8019526 8132539 |
| * @library .. |
| * @build PassThroughFileSystem FaultyFileSystem |
| * @run testng StreamTest |
| * @summary Unit test for java.nio.file.Files methods that return a Stream |
| */ |
| |
| 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.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.TreeSet; |
| import java.util.concurrent.Callable; |
| import java.util.function.BiPredicate; |
| import java.util.stream.Stream; |
| 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<Path> 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 (Stream<Path> s = Files.list(testFolder)) { |
| Object[] actual = s.sorted().toArray(); |
| assertEquals(actual, level1); |
| } catch (IOException ioe) { |
| fail("Unexpected IOException"); |
| } |
| |
| try (Stream<Path> 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 (Stream<Path> s = Files.walk(testFolder)) { |
| Object[] actual = s.sorted().toArray(); |
| assertEquals(actual, all); |
| } catch (IOException ioe) { |
| fail("Unexpected IOException"); |
| } |
| } |
| |
| public void testWalkOneLevel() { |
| try (Stream<Path> s = Files.walk(testFolder, 1)) { |
| Object[] actual = s.filter(path -> ! path.equals(testFolder)) |
| .sorted() |
| .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 (Stream<Path> s = Files.walk(testFolder, FileVisitOption.FOLLOW_LINKS)) { |
| Object[] actual = s.sorted().toArray(); |
| assertEquals(actual, all_folowLinks); |
| } catch (IOException ioe) { |
| fail("Unexpected IOException"); |
| } |
| } |
| |
| private void validateFileSystemLoopException(Path start, Path... causes) { |
| try (Stream<Path> 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<Path, BasicFileAttributes> { |
| private final BiPredicate<Path, BasicFileAttributes> pred; |
| private final Set<Path> visited = new TreeSet<Path>(); |
| |
| PathBiPredicate(BiPredicate<Path, BasicFileAttributes> 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 (Stream<Path> s = Files.find(testFolder, Integer.MAX_VALUE, pred)) { |
| Set<Path> 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 (Stream<Path> 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 (Stream<Path> 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 (Stream<Path> 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 (Stream<String> s = Files.lines(tmpfile)) { |
| checkLines(s, Collections.emptyList()); |
| } |
| try (Stream<String> s = Files.lines(tmpfile, US_ASCII)) { |
| checkLines(s, Collections.emptyList()); |
| } |
| |
| // one line |
| List<String> oneLine = Arrays.asList("hi"); |
| Files.write(tmpfile, oneLine, US_ASCII); |
| try (Stream<String> s = Files.lines(tmpfile)) { |
| checkLines(s, oneLine); |
| } |
| try (Stream<String> s = Files.lines(tmpfile, US_ASCII)) { |
| checkLines(s, oneLine); |
| } |
| |
| // two lines using platform's line separator |
| List<String> twoLines = Arrays.asList("hi", "there"); |
| Files.write(tmpfile, twoLines, US_ASCII); |
| try (Stream<String> s = Files.lines(tmpfile)) { |
| checkLines(s, twoLines); |
| } |
| try (Stream<String> s = Files.lines(tmpfile, US_ASCII)) { |
| checkLines(s, twoLines); |
| } |
| |
| // MalformedInputException |
| byte[] bad = { (byte)0xff, (byte)0xff }; |
| Files.write(tmpfile, bad); |
| try (Stream<String> s = Files.lines(tmpfile)) { |
| checkMalformedInputException(s); |
| } |
| try (Stream<String> s = Files.lines(tmpfile, US_ASCII)) { |
| checkMalformedInputException(s); |
| } |
| |
| // NullPointerException |
| checkNullPointerException(() -> Files.lines(null)); |
| checkNullPointerException(() -> Files.lines(null, US_ASCII)); |
| checkNullPointerException(() -> Files.lines(tmpfile, null)); |
| |
| } finally { |
| Files.delete(tmpfile); |
| } |
| } |
| |
| private void checkLines(Stream<String> s, List<String> expected) { |
| List<String> lines = s.collect(Collectors.toList()); |
| assertTrue(lines.size() == expected.size(), "Unexpected number of lines"); |
| assertTrue(lines.equals(expected), "Unexpected content"); |
| } |
| |
| private void checkMalformedInputException(Stream<String> s) { |
| try { |
| List<String> lines = s.collect(Collectors.toList()); |
| fail("UncheckedIOException expected"); |
| } catch (UncheckedIOException ex) { |
| IOException cause = ex.getCause(); |
| assertTrue(cause instanceof MalformedInputException, |
| "MalformedInputException expected"); |
| } |
| } |
| |
| private void checkNullPointerException(Callable<?> c) { |
| try { |
| c.call(); |
| fail("NullPointerException expected"); |
| } catch (NullPointerException ignore) { |
| } catch (Exception e) { |
| fail(e + " not expected"); |
| } |
| } |
| |
| 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 (Stream<Path> s = Files.list(fakeRoot)) { |
| s.forEach(path -> assertEquals(path.getFileName().toString(), "DirectoryIteratorException")); |
| } |
| } catch (UncheckedIOException uioe) { |
| fail("Unexpected exception."); |
| } |
| |
| fsp.setFaultyMode(true); |
| try { |
| try (DirectoryStream<Path> ds = Files.newDirectoryStream(fakeRoot)) { |
| Iterator<Path> itor = ds.iterator(); |
| while (itor.hasNext()) { |
| itor.next(); |
| } |
| } |
| fail("Shoule throw DirectoryIteratorException"); |
| } catch (DirectoryIteratorException die) { |
| } |
| |
| try { |
| try (Stream<Path> 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 (Stream<Path> s = Files.list(fakeRoot.resolve("dir2"))) { |
| // only one file |
| s.forEach(path -> assertEquals(path.getFileName().toString(), "IOException")); |
| } |
| |
| try (Stream<Path> 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 (Stream<Path> s = Files.list(fakeRoot.resolve("dir2"))) { |
| s.forEach(path -> fail("should have caused exception")); |
| } catch (UncheckedIOException uioe) { |
| assertTrue(uioe.getCause() instanceof FaultyFileSystem.FaultyException); |
| } |
| |
| try (Stream<Path> 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 (Stream<Path> 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 empty = testFolder.resolve("empty"); |
| Path triggerFile = Files.createFile(empty.resolve("SecurityException")); |
| Path sampleFile = Files.createDirectories(empty.resolve("sample")); |
| |
| Path dir2 = testFolder.resolve("dir2"); |
| Path triggerDir = Files.createDirectories(dir2.resolve("SecurityException")); |
| Files.createFile(triggerDir.resolve("fileInSE")); |
| Path sample = Files.createFile(dir2.resolve("file")); |
| |
| Path triggerLink = null; |
| Path linkTriggerDir = null; |
| Path linkTriggerFile = null; |
| if (supportsLinks) { |
| Path dir = testFolder.resolve("dir"); |
| triggerLink = Files.createSymbolicLink(dir.resolve("SecurityException"), empty); |
| linkTriggerDir = Files.createSymbolicLink(dir.resolve("lnDirSE"), triggerDir); |
| linkTriggerFile = Files.createSymbolicLink(dir.resolve("lnFileSE"), triggerFile); |
| } |
| |
| FaultyFileSystem.FaultyFSProvider fsp = FaultyFileSystem.FaultyFSProvider.getInstance(); |
| FaultyFileSystem fs = (FaultyFileSystem) fsp.newFileSystem(testFolder, null); |
| |
| try { |
| fsp.setFaultyMode(false); |
| Path fakeRoot = fs.getRoot(); |
| // validate setting |
| try (Stream<Path> s = Files.list(fakeRoot.resolve("empty"))) { |
| String[] result = s.map(path -> path.getFileName().toString()) |
| .toArray(String[]::new); |
| assertEqualsNoOrder(result, new String[] { "SecurityException", "sample" }); |
| } |
| |
| try (Stream<Path> 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" }); |
| } |
| |
| if (supportsLinks) { |
| try (Stream<Path> 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", "lnDirSE", "lnFileSE" }); |
| } |
| } |
| |
| // execute test |
| fsp.setFaultyMode(true); |
| // ignore file cause SecurityException |
| try (Stream<Path> s = Files.walk(fakeRoot.resolve("empty"))) { |
| String[] result = s.map(path -> path.getFileName().toString()) |
| .toArray(String[]::new); |
| assertEqualsNoOrder(result, new String[] { "empty", "sample" }); |
| } |
| // skip folder cause SecurityException |
| try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir2"))) { |
| String[] result = s.map(path -> path.getFileName().toString()) |
| .toArray(String[]::new); |
| assertEqualsNoOrder(result, new String[] { "dir2", "file" }); |
| } |
| |
| if (supportsLinks) { |
| // not following links |
| try (Stream<Path> 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", "lnDirSE", "lnFileSE" }); |
| } |
| |
| // following links |
| try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir"), FileVisitOption.FOLLOW_LINKS)) { |
| String[] result = s.map(path -> path.getFileName().toString()) |
| .toArray(String[]::new); |
| // ?? Should fileInSE show up? |
| // With FaultyFS, it does as no exception thrown for link to "SecurityException" with read on "lnXxxSE" |
| assertEqualsNoOrder(result, new String[] { "dir", "d1", "f1", "lnDir2", "file", "lnDirSE", "lnFileSE", "fileInSE" }); |
| } |
| } |
| |
| // list instead of walk |
| try (Stream<Path> s = Files.list(fakeRoot.resolve("empty"))) { |
| String[] result = s.map(path -> path.getFileName().toString()) |
| .toArray(String[]::new); |
| assertEqualsNoOrder(result, new String[] { "sample" }); |
| } |
| try (Stream<Path> 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 (Stream<Path> 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 (Stream<Path> 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 (Stream<Path> 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 (Stream<Path> 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(); |
| } |
| if (supportsLinks) { |
| Files.delete(triggerLink); |
| Files.delete(linkTriggerDir); |
| Files.delete(linkTriggerFile); |
| } |
| Files.delete(triggerFile); |
| Files.delete(sampleFile); |
| Files.delete(sample); |
| TestUtil.removeAll(triggerDir); |
| } |
| } |
| |
| public void testConstructException() { |
| try (Stream<String> s = Files.lines(testFolder.resolve("notExist"), Charset.forName("UTF-8"))) { |
| s.forEach(l -> fail("File is not even exist!")); |
| } catch (IOException ioe) { |
| assertTrue(ioe instanceof NoSuchFileException); |
| } |
| } |
| |
| public void testClosedStream() throws IOException { |
| try (Stream<Path> s = Files.list(testFolder)) { |
| s.close(); |
| Object[] actual = s.sorted().toArray(); |
| fail("Operate on closed stream should throw IllegalStateException"); |
| } catch (IllegalStateException ex) { |
| // expected |
| } |
| |
| try (Stream<Path> s = Files.walk(testFolder)) { |
| s.close(); |
| Object[] actual = s.sorted().toArray(); |
| fail("Operate on closed stream should throw IllegalStateException"); |
| } catch (IllegalStateException ex) { |
| // expected |
| } |
| |
| try (Stream<Path> s = Files.find(testFolder, Integer.MAX_VALUE, |
| (p, attr) -> true)) { |
| s.close(); |
| Object[] actual = s.sorted().toArray(); |
| fail("Operate on closed stream should throw IllegalStateException"); |
| } catch (IllegalStateException ex) { |
| // expected |
| } |
| } |
| |
| public void testProcFile() throws IOException { |
| if (System.getProperty("os.name").equals("Linux")) { |
| Path path = Paths.get("/proc/cpuinfo"); |
| if (Files.exists(path)) { |
| String NEW_LINE = System.getProperty("line.separator"); |
| String s = |
| Files.lines(path).collect(Collectors.joining(NEW_LINE)); |
| if (s.length() == 0) { |
| fail("Files.lines(\"" + path + "\") returns no data"); |
| } |
| } |
| } |
| } |
| } |
