89 lines
3.1 KiB
Java
89 lines
3.1 KiB
Java
/*
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* Copyright (c) 2013, 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 8012557
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* @summary Check that 8012557 is fixed, that interface lambda
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* methods are private
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* @author Robert Field
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* @compile SAM.java
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* @compile A.java
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* @compile B.java
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* @compile C.java
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* @run main PrivateLambdas
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*
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* Unless the lambda methods are private, this will fail with:
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* AbstractMethodError:
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* Conflicting default methods: A.lambda$0 B.lambda$0 C.lambda$0
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*/
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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interface X extends A, B, C {
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default String u() { return " "; }
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default String name() {
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return A.super.name() + B.super.name() + C.super.name();
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}
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}
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public class PrivateLambdas implements X {
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public static void main(String[] args) throws Exception {
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// Check that all the lambda methods are private instance synthetic
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for (Class<?> k : new Class<?>[] { A.class, B.class, C.class }) {
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Method[] methods = k.getDeclaredMethods();
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int lambdaCount = 0;
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for(Method m : methods) {
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if (m.getName().startsWith("lambda$")) {
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++lambdaCount;
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int mod = m.getModifiers();
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if ((mod & Modifier.PRIVATE) == 0) {
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throw new Exception("Expected " + m + " to be private");
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}
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if (!m.isSynthetic()) {
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throw new Exception("Expected " + m + " to be synthetic");
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}
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if ((mod & Modifier.STATIC) != 0) {
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throw new Exception("Expected " + m + " to be instance method");
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}
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}
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}
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if (lambdaCount == 0) {
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throw new Exception("Expected at least one lambda method");
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}
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}
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/*
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* Unless the lambda methods are private, this will fail with:
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* AbstractMethodError:
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* Conflicting default methods: A.lambda$0 B.lambda$0 C.lambda$0
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*/
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X x = new PrivateLambdas();
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if (!x.name().equals(" A B C")) {
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throw new Exception("Expected ' A B C' got: " + x.name());
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}
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}
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}
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