| /* |
| * Copyright (c) 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 6865748 |
| * @summary Unit test for java.nio.file.Files.walkFileTree |
| */ |
| |
| import java.nio.file.*; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.io.IOException; |
| import java.util.*; |
| |
| public class Nulls { |
| |
| static void npeExpected() { |
| throw new RuntimeException("NullPointerException expected"); |
| } |
| |
| public static void main(String[] args) throws IOException { |
| try { |
| Files.walkFileTree(null, EnumSet.noneOf(FileVisitOption.class), |
| Integer.MAX_VALUE, new SimpleFileVisitor<Path>(){}); |
| npeExpected(); |
| } catch (NullPointerException e) { |
| } |
| try { |
| Files.walkFileTree(Paths.get("."), null, Integer.MAX_VALUE, |
| new SimpleFileVisitor<Path>(){}); |
| npeExpected(); |
| } catch (NullPointerException e) { |
| } |
| try { |
| Files.walkFileTree(Paths.get("."), EnumSet.noneOf(FileVisitOption.class), |
| -1, new SimpleFileVisitor<Path>(){}); |
| throw new RuntimeException("IllegalArgumentExpected expected"); |
| } catch (IllegalArgumentException e) { |
| } |
| try { |
| Set<FileVisitOption> opts = new HashSet<>(1); |
| opts.add(null); |
| Files.walkFileTree(Paths.get("."), opts, Integer.MAX_VALUE, |
| new SimpleFileVisitor<Path>(){}); |
| npeExpected(); |
| } catch (NullPointerException e) { |
| } |
| try { |
| Files.walkFileTree(Paths.get("."), EnumSet.noneOf(FileVisitOption.class), |
| Integer.MAX_VALUE, null); |
| npeExpected(); |
| } catch (NullPointerException e) { |
| } |
| |
| SimpleFileVisitor<Path> visitor = new SimpleFileVisitor<Path>() { }; |
| boolean ranTheGauntlet = false; |
| Path dir = Paths.get("."); |
| BasicFileAttributes attrs = Files.readAttributes(dir, BasicFileAttributes.class); |
| |
| try { visitor.preVisitDirectory(null, attrs); |
| } catch (NullPointerException x0) { |
| try { visitor.preVisitDirectory(dir, null); |
| } catch (NullPointerException x1) { |
| try { visitor.visitFile(null, attrs); |
| } catch (NullPointerException x2) { |
| try { visitor.visitFile(dir, null); |
| } catch (NullPointerException x3) { |
| try { visitor.visitFileFailed(null, new IOException()); |
| } catch (NullPointerException x4) { |
| try { visitor.visitFileFailed(dir, null); |
| } catch (NullPointerException x5) { |
| try { visitor.postVisitDirectory(null, new IOException()); |
| } catch (NullPointerException x6) { |
| // if we get here then all visit* methods threw NPE as expected |
| ranTheGauntlet = true; |
| }}}}}}} |
| if (!ranTheGauntlet) |
| throw new RuntimeException("A visit method did not throw NPE"); |
| } |
| } |