aoqi@0: /*
aoqi@0:  * Copyright (c) 2011, 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.
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: import java.util.List;
aoqi@0: import java.util.ArrayList;
aoqi@0: import java.util.Arrays;
aoqi@0: import java.io.Serializable;
aoqi@0: import java.io.File;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * @test
aoqi@0:  * @bug 8003280
aoqi@0:  * @summary Add lambda tests
aoqi@0:  *   Parameter types inferred from target type in generics without wildcard
aoqi@0:  * @compile InferenceTest2.java
aoqi@0:  * @run main InferenceTest2
aoqi@0:  */
aoqi@0: 
aoqi@0: public class InferenceTest2 {
aoqi@0: 
aoqi@0:     private static void assertTrue(boolean cond) {
aoqi@0:         if (!cond)
aoqi@0:             throw new AssertionError();
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void main(String[] args) {
aoqi@0: 
aoqi@0:         InferenceTest2 test = new InferenceTest2();
aoqi@0: 
aoqi@0:         //test SAM1<T>
aoqi@0:         SAM1<String> sam1 = para -> { String result = "";
aoqi@0:                                       for(String s : para)
aoqi@0:                                           if(s.compareTo(result) > 0)
aoqi@0:                                               result = s;
aoqi@0:                                       return result; };
aoqi@0:         List<String> list = Arrays.asList("a", "b", "c");
aoqi@0:         assertTrue(sam1.m1(list).equals("c"));
aoqi@0: 
aoqi@0:         test.method1(para -> para.get(0));
aoqi@0: 
aoqi@0:         //test SAM2<T>
aoqi@0:         SAM2<String> sam2 = para -> {para = para.substring(0);};
aoqi@0:         SAM2<Double> sam2_2 = para -> {};
aoqi@0:         SAM2<File> sam2_3 = para -> { if(para.isDirectory())
aoqi@0:                                           System.out.println("directory");
aoqi@0:                                     };
aoqi@0: 
aoqi@0:         //test SAM3<T>
aoqi@0:         SAM3<String> sam3 = para -> para[0].substring(0, para[0].length()-1);
aoqi@0:         assertTrue(sam3.m3("hello+").equals("hello"));
aoqi@0: 
aoqi@0:         SAM3<Integer> sam3_2 = para -> para[0] - para[1];
aoqi@0:         assertTrue(sam3_2.m3(1, -1) == 2);
aoqi@0: 
aoqi@0:         SAM3<Double> sam3_3 = para -> para[0] + para[1] + para[2] + para[3];
aoqi@0:         assertTrue(sam3_3.m3(1.0, 2.0, 3.0, 4.0) == 10.0);
aoqi@0: 
aoqi@0:         test.method3(para -> para[0] + 1);
aoqi@0: 
aoqi@0:         //test SAM6<T>
aoqi@0:         SAM6<String> sam6 = (para1, para2) -> para1.concat(para2);
aoqi@0:         assertTrue(sam6.m6("hello", "world").equals("helloworld"));
aoqi@0: 
aoqi@0:         test.method6((para1, para2) -> para1 >= para2? para1 : para2);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void method1(SAM1<Integer> sam1) {
aoqi@0:         List<Integer> list = Arrays.asList(3,2,1);
aoqi@0:         assertTrue(sam1.m1(list) == 3);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void method3(SAM3<Double> sam3) {
aoqi@0:         assertTrue(sam3.m3(2.5) == 3.5);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void method6(SAM6<Long> sam6) {
aoqi@0:         assertTrue(sam6.m6(5L, -5L) == 5);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface SAM1<T> {
aoqi@0:         T m1(List<T> x);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface SAM2<T extends Serializable> {
aoqi@0:         void m2(T x);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface SAM3<T> {
aoqi@0:         T m3(T... x);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface SAM6<T> {
aoqi@0:         T m6(T a, T b);
aoqi@0:     }
aoqi@0: }