Mercurial > hg > Members > kono > jpf-core
view src/tests/java8/LambdaTest.java @ 28:7be90179bb3b
Provided support for double colon operator used for lamabda expressions. Fixed a bug related to generating names for funcation object classes (by supporting double colon operator, a new stragety needed to generate unique names for function objects. To achive that the bootstrap ids are incorporated into names). Finally modified the method that retrieves the SAM from functional interfaces.
author | nastaran <nastaran.shafiei@gmail.com> |
---|---|
date | Thu, 25 Jun 2015 13:20:50 -0700 |
parents | 61d41facf527 |
children | 820b89dd6c97 |
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/* * Copyright (C) 2014, United States Government, as represented by the * Administrator of the National Aeronautics and Space Administration. * All rights reserved. * * The Java Pathfinder core (jpf-core) platform is licensed under the * Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package java8; import gov.nasa.jpf.util.test.TestJPF; import org.junit.Test; /** * @author Nastaran Shafiei <nastaran.shafiei@gmail.com> */ public class LambdaTest extends TestJPF{ static class EnforcedException extends RuntimeException { // nothing in here } @Test public void testFuncObjAssignment() { if(verifyUnhandledException(EnforcedException.class.getName())) { Runnable r = () -> { throw new EnforcedException(); // make sure it gets here }; assertTrue(r != null); (new Thread(r)).start(); } } public interface FI1 { void sam(); } public interface FI2 extends FI1 { @Override public String toString(); } @Test public void testSyntheticFuncObjClass() { if (verifyNoPropertyViolation()) { FI2 fi = () -> { return; }; assertTrue(fi != null); Class cls = fi.getClass(); assertEquals(cls.getInterfaces().length, 1); assertEquals(cls.getDeclaredMethods().length, 1); assertSame(cls.getInterfaces()[0], FI2.class); assertSame(cls.getSuperclass(), Object.class); } } public interface FI3 { public String ret(); } @Test public void testSAMReturn() { if (verifyNoPropertyViolation()) { FI3 rt = () -> { return "something"; }; assertEquals(rt.ret(),"something"); } } public class C { int x = 1; } public interface IncX { public int incX(C o); } @Test public void testLambdaArgument() { if (verifyNoPropertyViolation()) { IncX fo = (arg) -> { return ++arg.x; }; C o = new C(); assertEquals(fo.incX(o),2); assertEquals(fo.incX(o),3); } } static Integer io = new Integer(20); @Test public void testClosure() { if (verifyNoPropertyViolation()) { int i = 10; FI1 fi = () -> { assertSame(i,10); assertSame(io.intValue(), 20); }; fi.sam(); } } static void method(FI1 fi) { fi.sam(); } @Test public void testPassingToMethod() { if (verifyUnhandledException(EnforcedException.class.getName())) { int i = 10; method(() -> { assertSame(i,10); assertSame(io.intValue(), 20); throw new EnforcedException(); }); } } // When invokedynamic executes for the first time, it creates a new function object. // Re-executing the same bytecode returns the existing function object. @Test public void testRepeatInvokedynamic() { if (verifyNoPropertyViolation()) { int i = 10; FI1 f1, f2 = null; for(int j=0; j<2; j++) { f1 = () -> { System.out.println("hello world!"); }; if(j==1) { assertTrue(f1!=null); assertSame(f1,f2); } f2 = f1; } } } public static class C2 { public static void throwException() { throw new EnforcedException(); } } @Test public void testDoubleCloneOperator() { if (verifyUnhandledException(EnforcedException.class.getName())) { FI1 fi = C2::throwException; fi.sam(); } } static class A { static { if(true) { throw new EnforcedException(); } } } @Test public void testInitDoubleCloneOperator() { if (verifyUnhandledException(EnforcedException.class.getName())) { new Thread(A::new).start(); } } static class D { static final B b = new B(); } static class B { static final D a = new D(); } @Test public void testClinitDeadlock() { if(verifyDeadlock()) { new Thread(D::new).start(); new B(); } } @Test public void testLambdaTypeName() { if(verifyNoPropertyViolation()) { Runnable r1 = (A::new); Runnable r2 = (B::new); assertFalse(r1.getClass().getName().equals(r2.getClass().getName())); } } public interface FI { default boolean returnTrue() { return true; } @Override public String toString(); public String toString(int i); } @Test public void testLambdaWithOverridenDefaultMethods() { if(verifyNoPropertyViolation()) { FI fi = (int i) -> {return "output:"+ i;}; assertEquals(fi.toString(10),"output:10"); } } public interface FI4 { } public interface FI5 extends FI { @Override public boolean equals(Object obj); } @Test public void testLambdaWithMultipleSuperInterfaces() { if(verifyNoPropertyViolation()) { FI5 fi = (int i) -> {return "output:"+ i;}; assertEquals(fi.toString(10),"output:10"); } } }