test/testutil.h

   1 /* test/testutil.h */
   2 /*-
   3  * Utilities for writing OpenSSL unit tests.
   4  *
   5  * More information:
   6  * http://wiki.openssl.org/index.php/How_To_Write_Unit_Tests_For_OpenSSL
   7  *
   8  * Author: Mike Bland (mbland@acm.org)
   9  * Date:   2014-06-07
  10  * ====================================================================
  11  * Copyright (c) 2014 The OpenSSL Project.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  *
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in
  22  *    the documentation and/or other materials provided with the
  23  *    distribution.
  24  *
  25  * 3. All advertising materials mentioning features or use of this
  26  *    software must display the following acknowledgment:
  27  *    "This product includes software developed by the OpenSSL Project
  28  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  29  *
  30  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  31  *    endorse or promote products derived from this software without
  32  *    prior written permission. For written permission, please contact
  33  *    licensing@OpenSSL.org.
  34  *
  35  * 5. Products derived from this software may not be called "OpenSSL"
  36  *    nor may "OpenSSL" appear in their names without prior written
  37  *    permission of the OpenSSL Project.
  38  *
  39  * 6. Redistributions of any form whatsoever must retain the following
  40  *    acknowledgment:
  41  *    "This product includes software developed by the OpenSSL Project
  42  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  45  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  47  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  48  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  49  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  51  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  53  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  54  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  55  * OF THE POSSIBILITY OF SUCH DAMAGE.
  56  * ====================================================================
  57  */
  58
  59 #ifndef HEADER_TESTUTIL_H
  60 # define HEADER_TESTUTIL_H
  61
  62 /*-
  63  * SETUP_TEST_FIXTURE and EXECUTE_TEST macros for test case functions.
  64  *
  65  * SETUP_TEST_FIXTURE will call set_up() to create a new TEST_FIXTURE_TYPE
  66  * object called "fixture". It will also allocate the "result" variable used
  67  * by EXECUTE_TEST. set_up() should take a const char* specifying the test
  68  * case name and return a TEST_FIXTURE_TYPE by value.
  69  *
  70  * EXECUTE_TEST will pass fixture to execute_func() by value, call
  71  * tear_down(), and return the result of execute_func(). execute_func() should
  72  * take a TEST_FIXTURE_TYPE by value and return zero on success or one on
  73  * failure.
  74  *
  75  * Unit tests can define their own SETUP_TEST_FIXTURE and EXECUTE_TEST
  76  * variations like so:
  77  *
  78  * #define SETUP_FOOBAR_TEST_FIXTURE()\
  79  *   SETUP_TEST_FIXTURE(FOOBAR_TEST_FIXTURE, set_up_foobar)
  80  *
  81  * #define EXECUTE_FOOBAR_TEST()\
  82  *   EXECUTE_TEST(execute_foobar, tear_down_foobar)
  83  *
  84  * Then test case functions can take the form:
  85  *
  86  * static int test_foobar_feature()
  87  *      {
  88  *      SETUP_FOOBAR_TEST_FIXTURE();
  89  *      [...set individual members of fixture...]
  90  *      EXECUTE_FOOBAR_TEST();
  91  *      }
  92  */
  93 # define SETUP_TEST_FIXTURE(TEST_FIXTURE_TYPE, set_up)\
  94         TEST_FIXTURE_TYPE fixture = set_up(TEST_CASE_NAME);\
  95         int result = 0
  96
  97 # define EXECUTE_TEST(execute_func, tear_down)\
  98         if (execute_func(fixture) != 0) result = 1;\
  99         tear_down(fixture);\
 100         return result
 101
 102 /*
 103  * TEST_CASE_NAME is defined as the name of the test case function where
 104  * possible; otherwise we get by with the file name and line number.
 105  */
 106 # if __STDC_VERSION__ < 199901L
 107 #  if defined(_MSC_VER)
 108 #   define TEST_CASE_NAME __FUNCTION__
 109 #  else
 110 #   define testutil_stringify_helper(s) #s
 111 #   define testutil_stringify(s) testutil_stringify_helper(s)
 112 #   define TEST_CASE_NAME __FILE__ ":" testutil_stringify(__LINE__)
 113 #  endif                        /* _MSC_VER */
 114 # else
 115 #  define TEST_CASE_NAME __func__
 116 # endif                         /* __STDC_VERSION__ */
 117
 118 /*
 119  * In main(), call ADD_TEST to register each test case function, then call
 120  * run_tests() to execute all tests and report the results. The result
 121  * returned from run_tests() should be used as the return value for main().
 122  */
 123 # define ADD_TEST(test_function) add_test(#test_function, test_function)
 124 void add_test(const char *test_case_name, int (*test_fn) ());
 125 int run_tests(const char *test_prog_name);
 126
 127 #endif                          /* HEADER_TESTUTIL_H */