96 lines
3.0 KiB
Java
96 lines
3.0 KiB
Java
/*
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* Copyright (c) 2024, 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 8336492
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* @summary Regression in lambda serialization
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*/
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import java.util.function.*;
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public class SerializedLambdaInLocalClass {
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public static void main(String[] args) {
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SerializedLambdaInLocalClass s = new SerializedLambdaInLocalClass();
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s.test(s::f_lambda_in_anon);
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s.test(s::f_lambda_in_local);
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s.test(s::f_lambda_in_lambda);
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}
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void test(IntFunction<Supplier<F>> fSupplier) {
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try {
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F f = fSupplier.apply(42).get();
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var baos = new ByteArrayOutputStream();
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// write
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try (var oos = new ObjectOutputStream(baos)) {
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oos.writeObject(f);
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}
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byte[] bytes = baos.toByteArray();
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var bais = new ByteArrayInputStream(bytes);
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// read
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try (var ois = new ObjectInputStream(bais)) {
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F f2 = (F)ois.readObject();
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if (f2.getValue() != f.getValue()) {
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throw new AssertionError(String.format("Found: %d, expected %d", f2.getValue(), f.getValue()));
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}
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}
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} catch (IOException | ClassNotFoundException ex) {
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throw new AssertionError(ex);
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}
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}
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interface F extends Serializable {
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int getValue();
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}
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Supplier<F> f_lambda_in_anon(int x) {
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return new Supplier<F>() {
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@Override
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public F get() {
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return () -> x;
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}
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};
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}
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Supplier<F> f_lambda_in_local(int x) {
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class FSupplier implements Supplier<F> {
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@Override
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public F get() {
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return () -> x;
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}
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}
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return new FSupplier();
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}
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Supplier<F> f_lambda_in_lambda(int x) {
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return () -> () -> x;
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}
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}
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