Mercurial > jdk8-mips64-public > langtools / annotate
test/tools/javac/TryWithResources/TwrNullTests.java@0b6cc4ea670f (annotated)
test/tools/javac/TryWithResources/TwrNullTests.java
Wed, 13 Aug 2014 14:50:00 -0700
- author
- katleman
- date
- Wed, 13 Aug 2014 14:50:00 -0700
- changeset 2549
- 0b6cc4ea670f
- parent 0
- 959103a6100f
- permissions
- -rw-r--r--
Added tag jdk8u40-b01 for changeset bf89a471779d
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | */ |
| aoqi@0 | 23 | |
| aoqi@0 | 24 | /* |
| aoqi@0 | 25 | * @test |
| aoqi@0 | 26 | * @bug 7020047 |
| aoqi@0 | 27 | * @summary Test null handling of try-with-resources statement |
| aoqi@0 | 28 | */ |
| aoqi@0 | 29 | |
| aoqi@0 | 30 | public class TwrNullTests { |
| aoqi@0 | 31 | /* |
| aoqi@0 | 32 | * Each try-with-resources statement generates two calls to the |
| aoqi@0 | 33 | * close method for each resource: one for when there is a primary |
| aoqi@0 | 34 | * exception present and the second for when a primary exception |
| aoqi@0 | 35 | * is absent. The null handling of both cases needs to be |
| aoqi@0 | 36 | * checked. |
| aoqi@0 | 37 | */ |
| aoqi@0 | 38 | public static void main(String... args) { |
| aoqi@0 | 39 | testNormalCompletion(); |
| aoqi@0 | 40 | testNoSuppression(); |
| aoqi@0 | 41 | } |
| aoqi@0 | 42 | |
| aoqi@0 | 43 | /* |
| aoqi@0 | 44 | * Verify empty try-with-resources on a null resource completes |
| aoqi@0 | 45 | * normally; no NPE from the generated close call. |
| aoqi@0 | 46 | */ |
| aoqi@0 | 47 | private static void testNormalCompletion() { |
| aoqi@0 | 48 | try(AutoCloseable resource = null) { |
| aoqi@0 | 49 | return; // Nothing to see here, move along. |
| aoqi@0 | 50 | } catch (Exception e) { |
| aoqi@0 | 51 | throw new AssertionError("Should not be reached", e); |
| aoqi@0 | 52 | } |
| aoqi@0 | 53 | } |
| aoqi@0 | 54 | |
| aoqi@0 | 55 | /* |
| aoqi@0 | 56 | * Verify that a NPE on a null resource is <em>not</em> added as a |
| aoqi@0 | 57 | * suppressed exception to an exception from try block. |
| aoqi@0 | 58 | */ |
| aoqi@0 | 59 | private static void testNoSuppression() { |
| aoqi@0 | 60 | try(AutoCloseable resource = null) { |
| aoqi@0 | 61 | throw new java.io.IOException(); |
| aoqi@0 | 62 | } catch(java.io.IOException ioe) { |
| aoqi@0 | 63 | Throwable[] suppressed = ioe.getSuppressed(); |
| aoqi@0 | 64 | if (suppressed.length != 0) { |
| aoqi@0 | 65 | throw new AssertionError("Non-empty suppressed exceptions", |
| aoqi@0 | 66 | ioe); |
| aoqi@0 | 67 | } |
| aoqi@0 | 68 | } catch (Exception e) { |
| aoqi@0 | 69 | throw new AssertionError("Should not be reached", e); |
| aoqi@0 | 70 | } |
| aoqi@0 | 71 | } |
| aoqi@0 | 72 | } |
