020255a72d
Reviewed-by: valeriep, aivanov, iris, dholmes, ihse
78 lines
3.3 KiB
Java
78 lines
3.3 KiB
Java
/*
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* Copyright (c) 2016, 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.MethodHandles
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* @run testng/othervm -ea -esa test.java.lang.invoke.VarArgsTest
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*/
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package test.java.lang.invoke;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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import java.util.Arrays;
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import java.util.List;
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import static java.lang.invoke.MethodHandles.*;
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import static java.lang.invoke.MethodType.*;
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import static org.testng.AssertJUnit.*;
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import org.testng.annotations.*;
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public class VarArgsTest {
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@Test
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public void testWithVarargs() throws Throwable {
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MethodHandle deepToString = publicLookup()
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.findStatic(Arrays.class, "deepToString", methodType(String.class, Object[].class));
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assertFalse(deepToString.isVarargsCollector());
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MethodHandle ts = deepToString.withVarargs(false);
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assertFalse(ts.isVarargsCollector());
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MethodHandle ts1 = deepToString.withVarargs(true);
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assertTrue(ts1.isVarargsCollector());
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assertEquals("[won]", (String) ts1.invokeExact(new Object[]{"won"}));
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assertEquals("[won]", (String) ts1.invoke(new Object[]{"won"}));
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assertEquals("[won]", (String) ts1.invoke("won"));
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assertEquals("[won, won]", (String) ts1.invoke("won", "won"));
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assertEquals("[won, won]", (String) ts1.invoke(new Object[]{"won", "won"}));
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assertEquals("[[won]]", (String) ts1.invoke((Object) new Object[]{"won"}));
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}
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@Test
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public void testWithVarargs2() throws Throwable {
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MethodHandle asList = publicLookup()
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.findStatic(Arrays.class, "asList", methodType(List.class, Object[].class));
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MethodHandle asListWithVarargs = asList.withVarargs(asList.isVarargsCollector());
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assert(asListWithVarargs.isVarargsCollector());
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assertEquals("[]", asListWithVarargs.invoke().toString());
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assertEquals("[1]", asListWithVarargs.invoke(1).toString());
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assertEquals("[two, too]", asListWithVarargs.invoke("two", "too").toString());
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}
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@Test(expectedExceptions = { IllegalArgumentException.class })
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public void testWithVarargsIAE() throws Throwable {
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MethodHandle lenMH = publicLookup()
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.findVirtual(String.class, "length", methodType(int.class));
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MethodHandle lenMHWithVarargs = lenMH.withVarargs(true);
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}
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}
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