3789983e89
Reviewed-by: darcy, ihse
75 lines
2.4 KiB
Java
75 lines
2.4 KiB
Java
/*
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* Copyright (c) 2015, 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 8020968
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* @summary Basic test for Stream<StackFrame> state
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* @run main StackStreamState
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*/
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import java.lang.StackWalker.StackFrame;
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import java.util.stream.Stream;
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public class StackStreamState {
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public static void main(String... args) {
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StackStreamState test = new StackStreamState();
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test.testStatic();
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test.testInstance();
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test.testLocal();
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}
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private static Stream<StackFrame> staticStream;
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private Stream<StackFrame> instanceStream;
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private final StackWalker walker = StackWalker.getInstance();
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void testStatic() {
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walker.walk(s -> {
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staticStream = s;
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return null;
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});
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checkStreamState(staticStream);
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}
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void testInstance() {
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walker.walk(s -> {
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instanceStream = s;
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return null;
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});
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checkStreamState(instanceStream);
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}
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void testLocal() {
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Stream<StackFrame> stream = walker.walk(s -> {
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return s;
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});
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checkStreamState(stream);
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}
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void checkStreamState(Stream<StackFrame> stream) {
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try {
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stream.count();
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throw new RuntimeException("IllegalStateException not thrown");
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} catch (IllegalStateException e) {
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System.out.println("Got expected IllegalStateException: " + e.getMessage());
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e.printStackTrace(System.out);
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}
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}
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}
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