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 public Map<String, Integer>[][] mixed2 = null; 39 40 public static void main(String... args) throws ReflectiveOperationException { 41 int failures = 0; 42 43 String[][] nested = {{""}}; 44 int[][] intArray = {{1}}; 45 46 failures += checkToGenericString(int.class, "int"); 47 failures += checkToGenericString(void.class, "void"); 48 failures += checkToGenericString(args.getClass(), "java.lang.String[]"); 49 failures += checkToGenericString(nested.getClass(), "java.lang.String[][]"); 50 failures += checkToGenericString(intArray.getClass(), "int[][]"); 51 failures += checkToGenericString(java.util.Map.class, "public abstract interface java.util.Map<K,V>"); 52 53 Field f = GenericStringTest.class.getDeclaredField("mixed"); 54 // The expected value includes "<K,V>" rather than 55 // "<...String,...Integer>" since the Class object rather than 56 // Type objects is being queried. 57 failures += checkToGenericString(f.getType(), "java.util.Map<K,V>[]"); 58 f = GenericStringTest.class.getDeclaredField("mixed2"); 59 failures += checkToGenericString(f.getType(), "java.util.Map<K,V>[][]"); 60 61 Class<?>[] types = { 62 GenericStringTest.class, 63 AnInterface.class, 64 LocalMap.class, 65 AnEnum.class, 66 AnotherEnum.class, 67 }; 68 69 for(Class<?> clazz : types) { 70 failures += checkToGenericString(clazz, clazz.getAnnotation(ExpectedGenericString.class).value()); 71 } 72 73 if (failures > 0) { 74 throw new RuntimeException(); 75 } 76 } 77 78 private static int checkToGenericString(Class<?> clazz, String expected) { 79 String genericString = clazz.toGenericString(); 80 if (!genericString.equals(expected)) { 81 System.err.printf("Unexpected Class.toGenericString output; expected '%s', got '%s'.%n", 82 expected, 83 genericString); 84 return 1; 85 } else 86 return 0; 87 } 88 } 89 90 @Retention(RetentionPolicy.RUNTIME) 91 @interface ExpectedGenericString { 92 String value(); 93 } 94 95 @ExpectedGenericString("abstract interface AnInterface") 96 strictfp interface AnInterface {} 97 98 @ExpectedGenericString("abstract interface LocalMap<K,V>") 99 interface LocalMap<K,V> {} 100 101 @ExpectedGenericString("final enum AnEnum") 102 enum AnEnum { 103 FOO; 104 } 105 106 @ExpectedGenericString("enum AnotherEnum") 107 enum AnotherEnum { 108 BAR{}; 109 }