| /* |
| * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8003280 |
| * @summary Add lambda tests |
| * This test is for self referential and recursive lambda expression that have type inference |
| * @compile InferenceTest11.java |
| * @run main InferenceTest11 |
| */ |
| |
| public class InferenceTest11 { |
| |
| private static void assertTrue(boolean b) { |
| if(!b) |
| throw new AssertionError(); |
| } |
| |
| static Func<Integer, Integer> f1; |
| static Func<Integer, ? extends Number> f2; |
| |
| public static void main(String[] args) { |
| |
| f1 = n -> { |
| if(n <= 0) |
| return 0; |
| if(n == 1) |
| return 1; |
| return f1.m(n-1) + f1.m(n-2); |
| }; |
| assertTrue(f1.m(-1) == 0); |
| assertTrue(f1.m(0) == 0); |
| assertTrue(f1.m(10) == 55); |
| |
| f2 = n -> { |
| if(n <= 1) |
| return 1.0; |
| return 2 * (Double)f2.m(n-1) + 1; |
| }; |
| assertTrue(f2.m(4).doubleValue() == 15.0); |
| } |
| |
| interface Func<T, V> { |
| V m(T t); |
| } |
| } |