Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/StringConversion.java
test/tools/javac/StringConversion.java
- changeset 1
- 9a66ca7c79fa
- child 554
- 9d9f26857129
equal
deleted
inserted
replaced
| -1:000000000000 | 1:9a66ca7c79fa |
|---|---|
| 1 /* | |
| 2 * Copyright 1997-1998 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 */ | |
| 23 | |
| 24 /* | |
| 25 * @test | |
| 26 * @bug 4030173 4071548 | |
| 27 * @summary Verify correct conversion of non-string arguments in string concatenation. | |
| 28 * @author maddox | |
| 29 * | |
| 30 * @compile StringConversion.java | |
| 31 * @run main StringConversion | |
| 32 */ | |
| 33 | |
| 34 class FooBar { | |
| 35 public String toString(){ | |
| 36 return null; | |
| 37 } | |
| 38 } | |
| 39 | |
| 40 public class StringConversion { | |
| 41 | |
| 42 static void check(int testid, String have, String expect) | |
| 43 throws Exception { | |
| 44 if ((have == null && have != expect) || | |
| 45 (have != null && !have.equals(expect))) { | |
| 46 String msg = | |
| 47 "TEST " + testid + ": HAVE \"" + | |
| 48 have + "\" EXPECT \"" + expect + "\""; | |
| 49 System.out.println("StringConversion: " + msg); | |
| 50 throw new Exception(msg); | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 public static void main(String[] args) throws Exception { | |
| 55 | |
| 56 String s; | |
| 57 String n = null; | |
| 58 Object o = null; | |
| 59 FooBar m = new FooBar(); | |
| 60 | |
| 61 // Null reference must be converted to "null" | |
| 62 | |
| 63 // Conversion will be done by 'StringBuffer.append'. | |
| 64 s = "foo" + n; | |
| 65 check(11, s, "foonull"); | |
| 66 s = n + "bar"; | |
| 67 check(12, s, "nullbar"); | |
| 68 s = "foo" + o; | |
| 69 check(13, s, "foonull"); | |
| 70 s = o + "bar"; | |
| 71 check(14, s, "nullbar"); | |
| 72 | |
| 73 // Conversion will be done by 'String.valueOf'. | |
| 74 s = "" + n; | |
| 75 check(21, s, "null"); | |
| 76 s = n + ""; | |
| 77 check(22, s, "null"); | |
| 78 s = "" + o; | |
| 79 check(23, s, "null"); | |
| 80 s = o + ""; | |
| 81 check(24, s, "null"); | |
| 82 | |
| 83 // Null 'toString' result must be converted to "null" | |
| 84 | |
| 85 // Conversion will be done by 'StringBuffer.append'. | |
| 86 s = "foo" + m; | |
| 87 check(31, s, "foonull"); | |
| 88 s = m + "bar"; | |
| 89 check(32, s, "nullbar"); | |
| 90 | |
| 91 // Conversion will be done by 'String.valueOf'. | |
| 92 s = "" + m; | |
| 93 check(43, s, "null"); | |
| 94 s = m + ""; | |
| 95 check(44, s, "null"); | |
| 96 | |
| 97 // A character array must be converted as if by | |
| 98 // 'toString', i.e., it is treated as an 'Object'. | |
| 99 | |
| 100 s = "polymorph"; | |
| 101 char[] ca = {'i', 's', 'm'}; | |
| 102 | |
| 103 check(51, s + ca, s + ca.toString()); | |
| 104 check(52, ca + s, ca.toString() + s); | |
| 105 | |
| 106 System.out.println("OK"); | |
| 107 } | |
| 108 } |
