73 lines
2.6 KiB
Java
73 lines
2.6 KiB
Java
/*
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* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 7020047
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* @summary Test null handling of try-with-resources statement
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*/
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public class TwrNullTests {
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/*
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* Each try-with-resources statement generates two calls to the
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* close method for each resource: one for when there is a primary
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* exception present and the second for when a primary exception
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* is absent. The null handling of both cases needs to be
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* checked.
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*/
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public static void main(String... args) {
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testNormalCompletion();
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testNoSuppression();
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}
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/*
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* Verify empty try-with-resources on a null resource completes
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* normally; no NPE from the generated close call.
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*/
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private static void testNormalCompletion() {
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try(AutoCloseable resource = null) {
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return; // Nothing to see here, move along.
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} catch (Exception e) {
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throw new AssertionError("Should not be reached", e);
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}
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}
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/*
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* Verify that a NPE on a null resource is <em>not</em> added as a
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* suppressed exception to an exception from try block.
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*/
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private static void testNoSuppression() {
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try(AutoCloseable resource = null) {
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throw new java.io.IOException();
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} catch(java.io.IOException ioe) {
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Throwable[] suppressed = ioe.getSuppressed();
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if (suppressed.length != 0) {
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throw new AssertionError("Non-empty suppressed exceptions",
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ioe);
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}
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} catch (Exception e) {
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throw new AssertionError("Should not be reached", e);
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}
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}
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}
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