aoqi@0: /*
aoqi@0:  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /**
aoqi@0:  * @test
aoqi@0:  * @bug 8003639
aoqi@0:  * @summary convert lambda testng tests to jtreg and add them
aoqi@0:  * @run testng LambdaTranslationTest2
aoqi@0:  */
aoqi@0: 
aoqi@0: import org.testng.annotations.Test;
aoqi@0: 
aoqi@0: import java.util.ArrayList;
aoqi@0: import java.util.List;
aoqi@0: 
aoqi@0: import static org.testng.Assert.assertEquals;
aoqi@0: import static org.testng.Assert.assertTrue;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * LambdaTranslationTest2 -- end-to-end smoke tests for lambda evaluation
aoqi@0:  */
aoqi@0: 
aoqi@0: @Test
aoqi@0: public class LambdaTranslationTest2 {
aoqi@0: 
aoqi@0:     final String dummy = "dummy";
aoqi@0: 
aoqi@0:     public void testLambdas() {
aoqi@0:         TPredicate<String> isEmpty = s -> s.isEmpty();
aoqi@0:         assertTrue(isEmpty.test(""));
aoqi@0:         assertTrue(!isEmpty.test("foo"));
aoqi@0: 
aoqi@0:         TPredicate<Object> oIsEmpty = s -> ((String) s).isEmpty();
aoqi@0:         assertTrue(oIsEmpty.test(""));
aoqi@0:         assertTrue(!oIsEmpty.test("foo"));
aoqi@0: 
aoqi@0:         TPredicate<Object> alwaysTrue = o -> true;
aoqi@0:         assertTrue(alwaysTrue.test(""));
aoqi@0:         assertTrue(alwaysTrue.test(null));
aoqi@0: 
aoqi@0:         TPredicate<Object> alwaysFalse = o -> false;
aoqi@0:         assertTrue(!alwaysFalse.test(""));
aoqi@0:         assertTrue(!alwaysFalse.test(null));
aoqi@0: 
aoqi@0:         // tests local capture
aoqi@0:         String foo = "foo";
aoqi@0:         TPredicate<String> equalsFoo = s -> s.equals(foo);
aoqi@0:         assertTrue(!equalsFoo.test(""));
aoqi@0:         assertTrue(equalsFoo.test("foo"));
aoqi@0: 
aoqi@0:         // tests instance capture
aoqi@0:         TPredicate<String> equalsDummy = s -> s.equals(dummy);
aoqi@0:         assertTrue(!equalsDummy.test(""));
aoqi@0:         assertTrue(equalsDummy.test("dummy"));
aoqi@0: 
aoqi@0:         TMapper<Object, Object> ident = s -> s;
aoqi@0: 
aoqi@0:         assertEquals("blarf", ident.map("blarf"));
aoqi@0:         assertEquals("wooga", ident.map("wooga"));
aoqi@0:         assertTrue("wooga" == ident.map("wooga"));
aoqi@0: 
aoqi@0:         // constant capture
aoqi@0:         TMapper<Object, Object> prefixer = s -> "p" + s;
aoqi@0:         assertEquals("pblarf", prefixer.map("blarf"));
aoqi@0:         assertEquals("pwooga", prefixer.map("wooga"));
aoqi@0: 
aoqi@0:         // instance capture
aoqi@0:         TMapper<Object, Object> prefixer2 = s -> dummy + s;
aoqi@0:         assertEquals("dummyblarf", prefixer2.map("blarf"));
aoqi@0:         assertEquals("dummywooga", prefixer2.map("wooga"));
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface Factory<T> {
aoqi@0:         T make();
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface StringFactory extends Factory<String> { }
aoqi@0: 
aoqi@0:     interface StringFactory2 extends Factory<String> {
aoqi@0:         String make();
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testBridges() {
aoqi@0:         Factory<String> of = () -> "y";
aoqi@0:         Factory<?> ef = () -> "z";
aoqi@0: 
aoqi@0:         assertEquals("y", of.make());
aoqi@0:         assertEquals("y", ((Factory<?>) of).make());
aoqi@0:         assertEquals("y", ((Factory) of).make());
aoqi@0: 
aoqi@0:         assertEquals("z", ef.make());
aoqi@0:         assertEquals("z", ((Factory) ef).make());
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testBridgesImplicitSpecialization() {
aoqi@0:         StringFactory sf = () -> "x";
aoqi@0: 
aoqi@0:         assertEquals("x", sf.make());
aoqi@0:         assertEquals("x", ((Factory<String>) sf).make());
aoqi@0:         assertEquals("x", ((Factory<?>) sf).make());
aoqi@0:         assertEquals("x", ((Factory) sf).make());
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testBridgesExplicitSpecialization() {
aoqi@0:         StringFactory2 sf = () -> "x";
aoqi@0: 
aoqi@0:         assertEquals("x", sf.make());
aoqi@0:         assertEquals("x", ((Factory<String>) sf).make());
aoqi@0:         assertEquals("x", ((Factory<?>) sf).make());
aoqi@0:         assertEquals("x", ((Factory) sf).make());
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testSuperCapture() {
aoqi@0:         class A {
aoqi@0:             String make() { return "x"; }
aoqi@0:         }
aoqi@0: 
aoqi@0:         class B extends A {
aoqi@0:             void testSuperCapture() {
aoqi@0:                 StringFactory sf = () -> super.make();
aoqi@0:                 assertEquals("x", sf.make());
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         new B().testSuperCapture();
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface WidenD {
aoqi@0:         public String m(float a0, double a1);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface WidenS {
aoqi@0:         public String m(byte a0, short a1);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface WidenI {
aoqi@0:         public String m(byte a0, short a1, char a2, int a3);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface WidenL {
aoqi@0:         public String m(byte a0, short a1, char a2, int a3, long a4);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface Box {
aoqi@0:         public String m(byte a0, short a1, char a2, int a3, long a4, boolean a5, float a6, double a7);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pb(Byte a0, Short a1, Character a2, Integer a3, Long a4, Boolean a5, Float a6, Double a7) {
aoqi@0:         return String.format("b%d s%d c%c i%d j%d z%b f%f d%f", a0, a1, a2, a3, a4, a5, a6, a7);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwI1(int a0, int a1, int a2, int a3) {
aoqi@0:         return String.format("b%d s%d c%d i%d", a0, a1, a2, a3);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwI2(Integer a0, Integer a1, Integer a2, Integer a3) {
aoqi@0:         return String.format("b%d s%d c%d i%d", a0, a1, a2, a3);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwL1(long a0, long a1, long a2, long a3, long a4) {
aoqi@0:         return String.format("b%d s%d c%d i%d j%d", a0, a1, a2, a3, a4);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwL2(Long a0, Long a1, Long a2, Long a3, Long a4) {
aoqi@0:         return String.format("b%d s%d c%d i%d j%d", a0, a1, a2, a3, a4);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwS1(short a0, short a1) {
aoqi@0:         return String.format("b%d s%d", a0, a1);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwS2(Short a0, Short a1) {
aoqi@0:         return String.format("b%d s%d", a0, a1);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwD1(double a0, double a1) {
aoqi@0:         return String.format("f%f d%f", a0, a1);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pwD2(Double a0, Double a1) {
aoqi@0:         return String.format("f%f d%f", a0, a1);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testPrimitiveWidening() {
aoqi@0:         WidenS ws1 = LambdaTranslationTest2::pwS1;
aoqi@0:         assertEquals("b1 s2", ws1.m((byte) 1, (short) 2));
aoqi@0: 
aoqi@0:         WidenD wd1 = LambdaTranslationTest2::pwD1;
aoqi@0:         assertEquals("f1.000000 d2.000000", wd1.m(1.0f, 2.0));
aoqi@0: 
aoqi@0:         WidenI wi1 = LambdaTranslationTest2::pwI1;
aoqi@0:         assertEquals("b1 s2 c3 i4", wi1.m((byte) 1, (short) 2, (char) 3, 4));
aoqi@0: 
aoqi@0:         WidenL wl1 = LambdaTranslationTest2::pwL1;
aoqi@0:         assertEquals("b1 s2 c3 i4 j5", wl1.m((byte) 1, (short) 2, (char) 3, 4, 5L));
aoqi@0: 
aoqi@0:         // @@@ TODO: clarify spec on widen+box conversion
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface Unbox {
aoqi@0:         public String m(Byte a0, Short a1, Character a2, Integer a3, Long a4, Boolean a5, Float a6, Double a7);
aoqi@0:     }
aoqi@0: 
aoqi@0:     static String pu(byte a0, short a1, char a2, int a3, long a4, boolean a5, float a6, double a7) {
aoqi@0:         return String.format("b%d s%d c%c i%d j%d z%b f%f d%f", a0, a1, a2, a3, a4, a5, a6, a7);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testUnboxing() {
aoqi@0:         Unbox u = LambdaTranslationTest2::pu;
aoqi@0:         assertEquals("b1 s2 cA i4 j5 ztrue f6.000000 d7.000000", u.m((byte)1, (short) 2, 'A', 4, 5L, true, 6.0f, 7.0));
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testBoxing() {
aoqi@0:         Box b = LambdaTranslationTest2::pb;
aoqi@0:         assertEquals("b1 s2 cA i4 j5 ztrue f6.000000 d7.000000", b.m((byte) 1, (short) 2, 'A', 4, 5L, true, 6.0f, 7.0));
aoqi@0:     }
aoqi@0: 
aoqi@0:     static boolean cc(Object o) {
aoqi@0:         return ((String) o).equals("foo");
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testArgCastingAdaptation() {
aoqi@0:         TPredicate<String> p = LambdaTranslationTest2::cc;
aoqi@0:         assertTrue(p.test("foo"));
aoqi@0:         assertTrue(!p.test("bar"));
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface SonOfPredicate<T> extends TPredicate<T> { }
aoqi@0: 
aoqi@0:     public void testExtendsSAM() {
aoqi@0:         SonOfPredicate<String> p = s -> s.isEmpty();
aoqi@0:         assertTrue(p.test(""));
aoqi@0:         assertTrue(!p.test("foo"));
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testConstructorRef() {
aoqi@0:         Factory<List<String>> lf = ArrayList<String>::new;
aoqi@0:         List<String> list = lf.make();
aoqi@0:         assertTrue(list instanceof ArrayList);
aoqi@0:         assertTrue(list != lf.make());
aoqi@0:         list.add("a");
aoqi@0:         assertEquals("[a]", list.toString());
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static String privateMethod() {
aoqi@0:         return "private";
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testPrivateMethodRef() {
aoqi@0:         Factory<String> sf = LambdaTranslationTest2::privateMethod;
aoqi@0:         assertEquals("private", sf.make());
aoqi@0:     }
aoqi@0: 
aoqi@0:     private interface PrivateIntf {
aoqi@0:         String make();
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testPrivateIntf() {
aoqi@0:         PrivateIntf p = () -> "foo";
aoqi@0:         assertEquals("foo", p.make());
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface Op<T> {
aoqi@0:         public T op(T a, T b);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testBoxToObject() {
aoqi@0:         Op<Integer> maxer = Math::max;
aoqi@0:         for (int i=-100000; i < 100000; i += 100)
aoqi@0:             for (int j=-100000; j < 100000; j += 99) {
aoqi@0:                 assertEquals((int) maxer.op(i,j), Math.max(i,j));
aoqi@0:             }
aoqi@0:     }
aoqi@0: 
aoqi@0:     protected static String protectedMethod() {
aoqi@0:         return "protected";
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testProtectedMethodRef() {
aoqi@0:         Factory<String> sf = LambdaTranslationTest2::protectedMethod;
aoqi@0:         assertEquals("protected", sf.make());
aoqi@0:     }
aoqi@0: 
aoqi@0:     class Inner1 {
aoqi@0:         String m1() {
aoqi@0:             return "Inner1.m1()";
aoqi@0:         }
aoqi@0: 
aoqi@0:         class Inner2 {
aoqi@0:             public String m1() {
aoqi@0:                 return "Inner1.Inner2.m1()";
aoqi@0:             }
aoqi@0: 
aoqi@0:             protected String m2() {
aoqi@0:                 return "Inner1.Inner2.m2()";
aoqi@0:             }
aoqi@0: 
aoqi@0:             String m3() {
aoqi@0:                 return "Inner1.Inner2.m3()";
aoqi@0:             }
aoqi@0: 
aoqi@0:             class Inner3<T> {
aoqi@0:                 T t = null;
aoqi@0:                 Inner3(T t) {
aoqi@0:                     this.t = t;
aoqi@0:                 }
aoqi@0:                 T m1() {
aoqi@0:                     return t;
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void testInnerClassMethodRef() {
aoqi@0:         Factory<String> fs = new Inner1()::m1;
aoqi@0:         assertEquals("Inner1.m1()", fs.make());
aoqi@0: 
aoqi@0:         fs = new Inner1().new Inner2()::m1;
aoqi@0:         assertEquals("Inner1.Inner2.m1()", fs.make());
aoqi@0: 
aoqi@0:         fs = new Inner1().new Inner2()::m2;
aoqi@0:         assertEquals("Inner1.Inner2.m2()", fs.make());
aoqi@0: 
aoqi@0:         fs = new Inner1().new Inner2()::m3;
aoqi@0:         assertEquals("Inner1.Inner2.m3()", fs.make());
aoqi@0: 
aoqi@0:         fs = new Inner1().new Inner2().new Inner3<String>("Inner1.Inner2.Inner3")::m1;
aoqi@0:         assertEquals("Inner1.Inner2.Inner3", fs.make());
aoqi@0: 
aoqi@0:         Factory<Integer> fsi = new Inner1().new Inner2().new Inner3<Integer>(100)::m1;
aoqi@0:         assertEquals(100, (int)fsi.make());
aoqi@0:     }
aoqi@0: }