98 lines
2.6 KiB
Java
98 lines
2.6 KiB
Java
/*
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* Copyright (c) 2017, 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 8186961
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* @run main/othervm StaticFieldsOnInterface C
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* @run main/othervm StaticFieldsOnInterface D
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* @run main/othervm StaticFieldsOnInterface Y
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*/
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public class StaticFieldsOnInterface {
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/*
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A
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/ \
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B C
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\ /
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D
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Interface A has a public field
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Ensure B, C, D only report exactly one public field
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A
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/
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X A
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|/
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Y
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Ensure class Y, extending class X, reports exactly one public field
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*/
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public interface A {
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public static final int CONSTANT = 42;
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}
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public interface B extends A {
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}
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public interface C extends A {
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}
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public interface D extends B, C {
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}
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static class X implements A {}
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static class Y extends X implements A {}
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public static void main(String[] args) throws Exception {
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char first = 'C';
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if (args.length > 0) {
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first = args[0].charAt(0);
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}
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assertOneField(A.class);
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// D first
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if (first == 'D') {
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assertOneField(D.class);
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assertOneField(C.class);
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}
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// C first
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else if (first == 'C') {
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assertOneField(C.class);
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assertOneField(D.class);
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}
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else {
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assertOneField(Y.class);
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}
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}
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static void assertOneField(Class<?> c) {
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int nfs = c.getFields().length;
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if (nfs != 1) {
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throw new AssertionError(String.format(
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"Class %s does not have exactly one field: %d", c.getName(), nfs));
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}
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}
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}
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