1 /* 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6298888 6992705 27 * @summary Check Class.toGenericString() 28 * @author Joseph D. Darcy 29 */ 30 31 import java.lang.reflect.*; 32 import java.lang.annotation.*; 33 import java.util.*; 34 35 @ExpectedGenericString("public class GenericStringTest") 36 public class GenericStringTest { 37 public Map<String, Integer>[] mixed = null; 38 39 public static void main(String... args) throws ReflectiveOperationException { 40 int failures = 0; 41 42 String[][] nested = {{""}}; 43 int[][] intArray = {{1}}; 44 45 failures += checkToGenericString(int.class, "int"); 46 failures += checkToGenericString(void.class, "void"); 47 failures += checkToGenericString(args.getClass(), "java.lang.String[]"); 48 failures += checkToGenericString(nested.getClass(), "java.lang.String[][]"); 49 failures += checkToGenericString(intArray.getClass(), "int[][]"); 50 failures += checkToGenericString(java.util.Map.class, "public abstract interface java.util.Map<K,V>"); 51 52 Field f = GenericStringTest.class.getDeclaredField("mixed"); 53 // The expected value includes "<K,V>" rather than 54 // "<...String,...Integer>" since the Class object rather than 55 // Type objects is being queried. 56 failures += checkToGenericString(f.getType(), "java.util.Map<K,V>[]"); 57 58 Class<?>[] types = { 59 GenericStringTest.class, 60 AnInterface.class, 61 LocalMap.class, 62 AnEnum.class, 63 AnotherEnum.class, 64 }; 65 66 for(Class<?> clazz : types) { 67 failures += checkToGenericString(clazz, clazz.getAnnotation(ExpectedGenericString.class).value()); 68 } 69 70 if (failures > 0) { 71 throw new RuntimeException(); 72 } 73 } 74 75 private static int checkToGenericString(Class<?> clazz, String expected) { 76 String genericString = clazz.toGenericString(); 77 if (!genericString.equals(expected)) { 78 System.err.printf("Unexpected Class.toGenericString output; expected '%s', got '%s'.%n", 79 expected, 80 genericString); 81 return 1; 82 } else 83 return 0; 84 } 85 } 86 87 @Retention(RetentionPolicy.RUNTIME) 88 @interface ExpectedGenericString { 89 String value(); 90 } 91 92 @ExpectedGenericString("abstract interface AnInterface") 93 strictfp interface AnInterface {} 94 95 @ExpectedGenericString("abstract interface LocalMap<K,V>") 96 interface LocalMap<K,V> {} 97 98 @ExpectedGenericString("final enum AnEnum") 99 enum AnEnum { 100 FOO; 101 } 102 103 @ExpectedGenericString("enum AnotherEnum") 104 enum AnotherEnum { 105 BAR{}; 106 }