80 lines
3.1 KiB
Java
80 lines
3.1 KiB
Java
/*
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* Copyright (c) 2014, 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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/* @test
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* @summary unit tests for java.lang.invoke.LambdaForm
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* @modules java.base/java.lang.invoke:open
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* @run junit/othervm test.java.lang.invoke.LambdaFormTest
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*/
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package test.java.lang.invoke;
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import org.junit.Test;
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import java.lang.reflect.Method;
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import static org.junit.Assert.*;
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public class LambdaFormTest {
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static final Method M_shortenSignature;
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static {
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try {
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Class<?> impl = Class.forName("java.lang.invoke.LambdaForm", false, null);
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Method m = impl.getDeclaredMethod("shortenSignature", String.class);
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m.setAccessible(true);
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M_shortenSignature = m;
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} catch(Exception e) {
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throw new AssertionError(e);
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}
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}
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public static String shortenSignature(String signature) throws ReflectiveOperationException {
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return (String)M_shortenSignature.invoke(null, signature);
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}
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@Test
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public void testShortenSignature() throws ReflectiveOperationException {
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for (String s : new String[] {
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// invariant strings:
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"L", "LL", "ILL", "LIL", "LLI", "IILL", "ILIL", "ILLI",
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// a few mappings:
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"LLL=L3", "LLLL=L4", "LLLLLLLLLL=L10",
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"IIIDDD=I3D3", "IDDD=ID3", "IIDDD=IID3", "IIID=I3D", "IIIDD=I3DD"
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}) {
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String s2 = s.substring(s.indexOf('=')+1);
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String s1 = s.equals(s2) ? s : s.substring(0, s.length() - s2.length() - 1);
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// mix the above cases with before and after reps of Z*
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for (int k = -3; k <= 3; k++) {
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String beg = (k < 0 ? "ZZZZ".substring(-k) : "");
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String end = (k > 0 ? "ZZZZ".substring(+k) : "");
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String ks1 = beg+s1+end;
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String ks2 = shortenSignature(beg)+s2+shortenSignature(end);
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String ks3 = shortenSignature(ks1);
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assertEquals(ks2, ks3);
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}
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}
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}
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public static void main(String[] args) throws ReflectiveOperationException {
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LambdaFormTest test = new LambdaFormTest();
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test.testShortenSignature();
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}
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}
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