Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id: exception.c 3553 2011-05-05 06:14:19Z nanang $ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include "test.h" |
| 21 | |
| 22 | |
| 23 | /** |
| 24 | * \page page_pjlib_exception_test Test: Exception Handling |
| 25 | * |
| 26 | * This file provides implementation of \b exception_test(). It tests the |
| 27 | * functionality of the exception handling API. |
| 28 | * |
| 29 | * @note This test use static ID not acquired through proper registration. |
| 30 | * This is not recommended, since it may create ID collissions. |
| 31 | * |
| 32 | * \section exception_test_sec Scope of the Test |
| 33 | * |
| 34 | * Some scenarios tested: |
| 35 | * - no exception situation |
| 36 | * - basic TRY/CATCH |
| 37 | * - multiple exception handlers |
| 38 | * - default handlers |
| 39 | * |
| 40 | * |
| 41 | * This file is <b>pjlib-test/exception.c</b> |
| 42 | * |
| 43 | * \include pjlib-test/exception.c |
| 44 | */ |
| 45 | |
| 46 | |
| 47 | #if INCLUDE_EXCEPTION_TEST |
| 48 | |
| 49 | #include <pjlib.h> |
| 50 | |
| 51 | #define ID_1 1 |
| 52 | #define ID_2 2 |
| 53 | |
| 54 | static int throw_id_1(void) |
| 55 | { |
| 56 | PJ_THROW( ID_1 ); |
| 57 | PJ_UNREACHED(return -1;) |
| 58 | } |
| 59 | |
| 60 | static int throw_id_2(void) |
| 61 | { |
| 62 | PJ_THROW( ID_2 ); |
| 63 | PJ_UNREACHED(return -1;) |
| 64 | } |
| 65 | |
| 66 | static int try_catch_test(void) |
| 67 | { |
| 68 | PJ_USE_EXCEPTION; |
| 69 | int rc = -200; |
| 70 | |
| 71 | PJ_TRY { |
| 72 | PJ_THROW(ID_1); |
| 73 | } |
| 74 | PJ_CATCH_ANY { |
| 75 | rc = 0; |
| 76 | } |
| 77 | PJ_END; |
| 78 | return rc; |
| 79 | } |
| 80 | |
| 81 | static int throw_in_handler(void) |
| 82 | { |
| 83 | PJ_USE_EXCEPTION; |
| 84 | int rc = 0; |
| 85 | |
| 86 | PJ_TRY { |
| 87 | PJ_THROW(ID_1); |
| 88 | } |
| 89 | PJ_CATCH_ANY { |
| 90 | if (PJ_GET_EXCEPTION() != ID_1) |
| 91 | rc = -300; |
| 92 | else |
| 93 | PJ_THROW(ID_2); |
| 94 | } |
| 95 | PJ_END; |
| 96 | return rc; |
| 97 | } |
| 98 | |
| 99 | static int return_in_handler(void) |
| 100 | { |
| 101 | PJ_USE_EXCEPTION; |
| 102 | |
| 103 | PJ_TRY { |
| 104 | PJ_THROW(ID_1); |
| 105 | } |
| 106 | PJ_CATCH_ANY { |
| 107 | return 0; |
| 108 | } |
| 109 | PJ_END; |
| 110 | return -400; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | static int test(void) |
| 115 | { |
| 116 | int rc = 0; |
| 117 | PJ_USE_EXCEPTION; |
| 118 | |
| 119 | /* |
| 120 | * No exception situation. |
| 121 | */ |
| 122 | PJ_TRY { |
| 123 | rc = rc; |
| 124 | } |
| 125 | PJ_CATCH_ANY { |
| 126 | rc = -3; |
| 127 | } |
| 128 | PJ_END; |
| 129 | |
| 130 | if (rc != 0) |
| 131 | return rc; |
| 132 | |
| 133 | |
| 134 | /* |
| 135 | * Basic TRY/CATCH |
| 136 | */ |
| 137 | PJ_TRY { |
| 138 | rc = throw_id_1(); |
| 139 | |
| 140 | // should not reach here. |
| 141 | rc = -10; |
| 142 | } |
| 143 | PJ_CATCH_ANY { |
| 144 | int id = PJ_GET_EXCEPTION(); |
| 145 | if (id != ID_1) { |
| 146 | PJ_LOG(3,("", "...error: got unexpected exception %d (%s)", |
| 147 | id, pj_exception_id_name(id))); |
| 148 | if (!rc) rc = -20; |
| 149 | } |
| 150 | } |
| 151 | PJ_END; |
| 152 | |
| 153 | if (rc != 0) |
| 154 | return rc; |
| 155 | |
| 156 | /* |
| 157 | * Multiple exceptions handlers |
| 158 | */ |
| 159 | PJ_TRY { |
| 160 | rc = throw_id_2(); |
| 161 | // should not reach here. |
| 162 | rc = -25; |
| 163 | } |
| 164 | PJ_CATCH_ANY { |
| 165 | switch (PJ_GET_EXCEPTION()) { |
| 166 | case ID_1: |
| 167 | if (!rc) rc = -30; break; |
| 168 | case ID_2: |
| 169 | if (!rc) rc = 0; break; |
| 170 | default: |
| 171 | if (!rc) rc = -40; |
| 172 | break; |
| 173 | } |
| 174 | } |
| 175 | PJ_END; |
| 176 | |
| 177 | if (rc != 0) |
| 178 | return rc; |
| 179 | |
| 180 | /* |
| 181 | * Test default handler. |
| 182 | */ |
| 183 | PJ_TRY { |
| 184 | rc = throw_id_1(); |
| 185 | // should not reach here |
| 186 | rc = -50; |
| 187 | } |
| 188 | PJ_CATCH_ANY { |
| 189 | switch (PJ_GET_EXCEPTION()) { |
| 190 | case ID_1: |
| 191 | if (!rc) rc = 0; |
| 192 | break; |
| 193 | default: |
| 194 | if (!rc) rc = -60; |
| 195 | break; |
| 196 | } |
| 197 | } |
| 198 | PJ_END; |
| 199 | |
| 200 | if (rc != 0) |
| 201 | return rc; |
| 202 | |
| 203 | /* |
| 204 | * Nested handlers |
| 205 | */ |
| 206 | PJ_TRY { |
| 207 | rc = try_catch_test(); |
| 208 | } |
| 209 | PJ_CATCH_ANY { |
| 210 | rc = -70; |
| 211 | } |
| 212 | PJ_END; |
| 213 | |
| 214 | if (rc != 0) |
| 215 | return rc; |
| 216 | |
| 217 | /* |
| 218 | * Throwing exception inside handler |
| 219 | */ |
| 220 | rc = -80; |
| 221 | PJ_TRY { |
| 222 | int rc2; |
| 223 | rc2 = throw_in_handler(); |
| 224 | if (rc2) |
| 225 | rc = rc2; |
| 226 | } |
| 227 | PJ_CATCH_ANY { |
| 228 | if (PJ_GET_EXCEPTION() == ID_2) { |
| 229 | rc = 0; |
| 230 | } else { |
| 231 | rc = -90; |
| 232 | } |
| 233 | } |
| 234 | PJ_END; |
| 235 | |
| 236 | if (rc != 0) |
| 237 | return rc; |
| 238 | |
| 239 | |
| 240 | /* |
| 241 | * Return from handler. Returning from the function inside a handler |
| 242 | * should be okay (though returning from the function inside the |
| 243 | * PJ_TRY block IS NOT OKAY!!). We want to test to see if handler |
| 244 | * is cleaned up properly, but not sure how to do this. |
| 245 | */ |
| 246 | PJ_TRY { |
| 247 | int rc2; |
| 248 | rc2 = return_in_handler(); |
| 249 | if (rc2) |
| 250 | rc = rc2; |
| 251 | } |
| 252 | PJ_CATCH_ANY { |
| 253 | rc = -100; |
| 254 | } |
| 255 | PJ_END; |
| 256 | |
| 257 | |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | int exception_test(void) |
| 262 | { |
| 263 | int i, rc; |
| 264 | enum { LOOP = 10 }; |
| 265 | |
| 266 | for (i=0; i<LOOP; ++i) { |
| 267 | if ((rc=test()) != 0) { |
| 268 | PJ_LOG(3,("", "...failed at i=%d (rc=%d)", i, rc)); |
| 269 | return rc; |
| 270 | } |
| 271 | } |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | #else |
| 276 | /* To prevent warning about "translation unit is empty" |
| 277 | * when this test is disabled. |
| 278 | */ |
| 279 | int dummy_exception_test; |
| 280 | #endif /* INCLUDE_EXCEPTION_TEST */ |
| 281 | |
| 282 | |