/*******************************************************************************
* Copyright (c) 2011, 2018 IBM Corporation.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.core.tests.compiler.regression;
import junit.framework.Test;
@SuppressWarnings({ "rawtypes" })
public class PolymorphicSignatureTest extends AbstractRegressionTest {
static {
// TESTS_NAMES = new String[] { "testBug515863" };
}
public PolymorphicSignatureTest(String name) {
super(name);
}
public static Test suite() {
return buildMinimalComplianceTestSuite(testClass(), F_1_7);
}
public static Class testClass() {
return PolymorphicSignatureTest.class;
}
public void test0001() {
this.runConformTest(
new String[] {
"X.java",
"import java.lang.invoke.*;\n" +
"public class X {\n" +
" public static void main(String[] args) throws Throwable{\n" +
" MethodType mt; MethodHandle mh; \n" +
" MethodHandles.Lookup lookup = MethodHandles.lookup();\n" +
" mt = MethodType.methodType(String.class, char.class, char.class);\n"+
" mh = lookup.findVirtual(String.class, \"replace\", mt);\n"+
" String s = (String) mh.invokeExact(\"daddy\",'d','n');\n"+
" System.out.println(s);\n"+
" }\n" +
"}\n"
},
"nanny");
}
public void test0002() {
this.runConformTest(
new String[] {
"X.java",
"import static java.lang.invoke.MethodHandles.*; \n" +
"import java.lang.invoke.MethodHandle;\n" +
"public class X {\n" +
" public static void main(String[] args) throws Throwable {\n" +
" MethodHandle mh = dropArguments(insertArguments(identity(int.class), 0, 42), 0, Object[].class);\n" +
" int value = (int)mh.invokeExact(new Object[0]);\n" +
" System.out.println(value);\n"+
" }\n" +
"}"
},
"42");
}
public void testBug515863() {
runConformTest(
new String[] {
"Test.java",
"import java.lang.invoke.MethodHandle;\n" +
"import java.util.ArrayList;\n" +
"import java.util.Collections;\n" +
"\n" +
"public class Test {\n" +
" \n" +
" public void foo() throws Throwable {\n" +
" \n" +
" MethodHandle mh = null;\n" +
" mh.invoke(null); // works, no issues.\n" +
" mh.invoke(null, new ArrayList<>()); // Bug 501457 fixed this\n" +
" mh.invoke(null, Collections.emptyList()); // This triggers UOE\n" +
" \n" +
" }\n" +
"}\n"
});
}
public void testBug475996() {
if (!isJRE9Plus)
return; // VarHandle is @since 9
runConformTest(
new String[] {
"X.java",
"import java.lang.invoke.VarHandle;\n" +
"public class X<T> {\n" +
" static class Token {}\n" +
" Token NIL = new Token();\n" +
" VarHandle RESULT;\n" +
" void call(T t) {\n" +
" RESULT.compareAndSet(this, null, (t==null) ? NIL : t);\n" +
" }\n" +
"" +
"}\n"
});
}
}
