test_expr.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2010, Digium, Inc.
 *
 * Tilghman Lesher <tlesher AT digium DOT com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*!
 * \file
 * \brief Expression Tests
 *
 * \author\verbatim Tilghman Lesher <tlesher AT digium DOT com> \endverbatim
 *
 * Verify that the expression parser works as intended.
 * \ingroup tests
 */

/*** MODULEINFO
   <depend>TEST_FRAMEWORK</depend>
   <support_level>core</support_level>
 ***/

#include "asterisk.h"

#include "asterisk/utils.h"
#include "asterisk/module.h"
#include "asterisk/test.h"
#include "asterisk/ast_expr.h"

AST_TEST_DEFINE(expr_test)
{
   int res = AST_TEST_PASS, i, len;
   struct {
      char *input;
      const char *output;
   } tests[] = {
      { "2 + 2", "4" },
      { "      2     +       2            ", "4" },
      { "", "" },
      { "2 - 4", "-2" },
      { "4 - 2", "2" },
      { "-4 - -2", "-2" },
      { "4 + 2 * 8", "20" },
      { "(4 + 2) * 8", "48" },
      { "4 + (2 * 8)", "20" },
      { "4 + (2 * 8) ? 3 :: 6", "3" },
      { "4 + 8 / 2", "8" },
      { "FLOOR(4 + 8 / 3)", "6" }, /* Floating point op on 1.6 and higher, need FLOOR() to keep result sane */
      { "(4+8) / 3", "4" },
      { "4 + 8 % 3", "6" },
      { "4 + 9 % 3", "4" },
      { "(4+9) %3", "1" },
      { "(4+8) %3", "0" },
      { "(4+9) %3", "1" },
      { "(4+8) %3", "0" },
      { "(4+9) % 3", "1" },
      { "(4+8) % 3", "0" },
      { "(4+9) % 3", "1" },
      { "(4+8) % 3", "0" },
      { "(4+9)% 3", "1" },
      { "(4+8)% 3", "0" },
      { "(4+9)% 3", "1" },
      { "(4+8)% 3", "0" },
      { "4 & 4", "4" },
      { "0 & 4", "0" },
      { "0 & 0", "0" },
      { "2 | 0", "2" },
      { "2 | 4", "2" },
      { "0 | 0", "0" },
      { "!0 | 0", "1" },
      { "!4 | 0", "0" },
      { "4 | !0", "4" },
      { "!4 | !0", "1" },
      { "0", "0" },
      { "!0", "1" },
      { "00", "00" },
      { "!00", "1" },
      { "1", "1" },
      { "!1", "0" },
      { "01", "01" },
      { "!01", "0" },
      { "3 < 4", "1" },
      { "4 < 3", "0" },
      { "3 > 4", "0" },
      { "4 > 3", "1" },
      { "3 = 3", "1" },
      { "3 = 4", "0" },
      { "3 != 3", "0" },
      { "3 != 4", "1" },
      { "3 >= 4", "0" },
      { "3 >= 3", "1" },
      { "4 >= 3", "1" },
      { "3 <= 4", "1" },
      { "4 <= 3", "0" },
      { "4 <= 4", "1" },
      { "3 > 4 & 4 < 3", "0" },
      { "4 > 3 & 3 < 4", "1" },
      { "x = x", "1" },
      { "y = x", "0" },
      { "x != y", "1" },
      { "x != x", "0" },
      { "\"Something interesting\" =~ interesting", "11" },
      { "\"Something interesting\" =~ Something", "9" },
      { "\"Something interesting\" : Something", "9" },
      { "\"Something interesting\" : interesting", "0" },
      { "\"Something interesting\" =~ \"interesting\"", "11" },
      { "\"Something interesting\" =~ \"Something\"", "9" },
      { "\"Something interesting\" : \"Something\"", "9" },
      { "\"Something interesting\" : \"interesting\"", "0" },
      { "\"Something interesting\" =~ (interesting)", "11" },
      { "\"Something interesting\" =~ (Something)", "9" },
      { "\"Something interesting\" : (Something)", "9" },
      { "\"Something interesting\" : (interesting)", "0" },
      { "\"Something interesting\" =~ \"\\(interesting\\)\"", "0" },
      { "\"Something interesting\" =~ \"\\(Something\\)\"", "0" },
      { "\"Something interesting\" : \"\\(Something\\)\"", "0" },
      { "\"Something interesting\" : \"\\(interesting\\)\"", "0" },
      { "\"011043567857575\" : \"011\\(..\\)\"", "0" },
      { "\"9011043567857575\" : \"011\\(..\\)\"", "0" },
      { "\"011043567857575\" =~ \"011\\(..\\)\"", "0" },
      { "\"9011043567857575\" =~ \"011\\(..\\)\"", "0" },
      { "\"Something interesting\" =~ (interesting)", "11" },
      { "\"Something interesting\" =~ (Something)", "9" },
      { "\"Something interesting\" : (Something)", "9" },
      { "\"Something interesting\" : (interesting)", "0" },
      { "\"Something interesting\" =~ \"(interesting)\"", "interesting" },
      { "\"Something interesting\" =~ \"(Something)\"", "Something" },
      { "\"Something interesting\" : \"(Something)\"", "Something" },
      { "\"Something interesting\" : \"(interesting)\"", "" },
      { "\"011043567857575\" : \"011(..)\"", "04" },
      { "\"9011043567857575\" : \"011(..)\"", "" },
      { "\"011043567857575\" =~ \"011(..)\"", "04" },
      { "\"9011043567857575\" =~ \"011(..)\"", "04" },
      { "3", "3" },
      { "something", "something" },
      { "043", "043" },
      { "${GLOBAL(ULKOPREFIX)}9${x}", "${GLOBAL(ULKOPREFIX)}9${x}" },
      { "512059${x}", "512059${x}" },
   };
   char buf[32];

   switch (cmd) {
   case TEST_INIT:
      info->name = "expr_test";
      info->category = "/main/ast_expr/";
      info->summary = "unit test for the internal expression engine";
      info->description =
         "Verifies behavior for the internal expression engine";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   for (i = 0; i < ARRAY_LEN(tests); i++) {
      memset(buf, 0, sizeof(buf));
      len = ast_expr(tests[i].input, buf, sizeof(buf), NULL);
      buf[len] = '\0';
      if (strcmp(buf, tests[i].output)) {
         ast_test_status_update(test, "Case %d: expression '%s' evaluated as '%s', but should have evaluated as '%s'\n", i + 1, tests[i].input, buf, tests[i].output);
         res = AST_TEST_FAIL;
      }
   }

   return res;
}

static int unload_module(void)
{
   AST_TEST_UNREGISTER(expr_test);
   return 0;
}

static int load_module(void)
{
   AST_TEST_REGISTER(expr_test);
   return AST_MODULE_LOAD_SUCCESS;
}

AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Expression evaluation tests");