test/testutil.h

   1 /*
   2  * Copyright 2014-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef HEADER_TESTUTIL_H
  11 # define HEADER_TESTUTIL_H
  12
  13 #include <stdarg.h>
  14
  15 #include <openssl/err.h>
  16 #include <openssl/e_os2.h>
  17 #include <openssl/bn.h>
  18
  19 /*-
  20  * Simple unit tests should implement setup_tests().
  21  * This function should return zero if the registration process fails.
  22  * To register tests, call ADD_TEST or ADD_ALL_TESTS:
  23  *
  24  * int setup_tests(void)
  25  * {
  26  *     ADD_TEST(test_foo);
  27  *     ADD_ALL_TESTS(test_bar, num_test_bar);
  28  *     return 1;
  29  * }
  30  *
  31  * Tests that require clean up after execution should implement:
  32  *
  33  * void cleanup_tests(void);
  34  *
  35  * The cleanup_tests function will be called even if setup_tests()
  36  * returns failure.
  37  *
  38  * In some cases, early initialization before the framework is set up
  39  * may be needed.  In such a case, this should be implemented:
  40  *
  41  * int global_init(void);
  42  *
  43  * This function should return zero if there is an unrecoverable error and
  44  * non-zero if the intialization was successful.
  45  */
  46
  47 /* Adds a simple test case. */
  48 # define ADD_TEST(test_function) add_test(#test_function, test_function)
  49
  50 /*
  51  * Simple parameterized tests. Calls test_function(idx) for each 0 <= idx < num.
  52  */
  53 # define ADD_ALL_TESTS(test_function, num) \
  54     add_all_tests(#test_function, test_function, num, 1)
  55 /*
  56  * A variant of the same without TAP output.
  57  */
  58 # define ADD_ALL_TESTS_NOSUBTEST(test_function, num) \
  59     add_all_tests(#test_function, test_function, num, 0)
  60
  61 /*-
  62  * Test cases that share common setup should use the helper
  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 1 on success and 0 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         result = execute_func(fixture);\
  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 !defined(__STDC_VERSION__) || __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  * Tests that need access to command line arguments should use the functions:
 120  * test_get_argument(int n) to get the nth argument, the first argument is
 121  *      argument 0.  This function returns NULL on error.
 122  * test_get_argument_count() to get the count of the arguments.
 123  * test_has_option(const char *) to check if the specified option was passed.
 124  * test_get_option_argument(const char *) to get an option which includes an
 125  *      argument.  NULL is returns if the option is not found.
 126  * const char *test_get_program_name(void) returns the name of the test program
 127  *      being executed.
 128  */
 129 const char *test_get_program_name(void);
 130 char *test_get_argument(size_t n);
 131 size_t test_get_argument_count(void);
 132 int test_has_option(const char *option);
 133 const char *test_get_option_argument(const char *option);
 134
 135 /*
 136  * Internal helpers. Test programs shouldn't use these directly, but should
 137  * rather link to one of the helper main() methods.
 138  */
 139
 140 void add_test(const char *test_case_name, int (*test_fn) (void));
 141 void add_all_tests(const char *test_case_name, int (*test_fn)(int idx), int num,
 142                    int subtest);
 143
 144 /*
 145  * Declarations for user defined functions.
 146  * The first two return a boolean indicating that the test should not proceed.
 147  */
 148 int global_init(void);
 149 int setup_tests(void);
 150 void cleanup_tests(void);
 151
 152 /*
 153  *  Test assumption verification helpers.
 154  */
 155
 156 #define PRINTF_FORMAT(a, b)
 157 #if defined(__GNUC__) && defined(__STDC_VERSION__)
 158   /*
 159    * Because we support the 'z' modifier, which made its appearance in C99,
 160    * we can't use __attribute__ with pre C99 dialects.
 161    */
 162 # if __STDC_VERSION__ >= 199901L
 163 #  undef PRINTF_FORMAT
 164 #  define PRINTF_FORMAT(a, b)   __attribute__ ((format(printf, a, b)))
 165 # endif
 166 #endif
 167
 168 # define DECLARE_COMPARISON(type, name, opname)                         \
 169     int test_ ## name ## _ ## opname(const char *, int,                 \
 170                                      const char *, const char *,        \
 171                                      const type, const type);
 172
 173 # define DECLARE_COMPARISONS(type, name)                                \
 174     DECLARE_COMPARISON(type, name, eq)                                  \
 175     DECLARE_COMPARISON(type, name, ne)                                  \
 176     DECLARE_COMPARISON(type, name, lt)                                  \
 177     DECLARE_COMPARISON(type, name, le)                                  \
 178     DECLARE_COMPARISON(type, name, gt)                                  \
 179     DECLARE_COMPARISON(type, name, ge)
 180
 181 DECLARE_COMPARISONS(int, int)
 182 DECLARE_COMPARISONS(unsigned int, uint)
 183 DECLARE_COMPARISONS(char, char)
 184 DECLARE_COMPARISONS(unsigned char, uchar)
 185 DECLARE_COMPARISONS(long, long)
 186 DECLARE_COMPARISONS(unsigned long, ulong)
 187 /*
 188  * Because this comparison uses a printf format specifier that's not
 189  * universally known (yet), we provide an option to not have it declared.
 190  */
 191 # ifndef TESTUTIL_NO_size_t_COMPARISON
 192 DECLARE_COMPARISONS(size_t, size_t)
 193 # endif
 194
 195 /*
 196  * Pointer comparisons against other pointers and null.
 197  * These functions return 1 if the test is true.
 198  * Otherwise, they return 0 and pretty-print diagnostics.
 199  * These should not be called directly, use the TEST_xxx macros below instead.
 200  */
 201 DECLARE_COMPARISON(void *, ptr, eq)
 202 DECLARE_COMPARISON(void *, ptr, ne)
 203 int test_ptr(const char *file, int line, const char *s, const void *p);
 204 int test_ptr_null(const char *file, int line, const char *s, const void *p);
 205
 206 /*
 207  * Equality tests for strings where NULL is a legitimate value.
 208  * These calls return 1 if the two passed strings compare true.
 209  * Otherwise, they return 0 and pretty-print diagnostics.
 210  * These should not be called directly, use the TEST_xxx macros below instead.
 211  */
 212 DECLARE_COMPARISON(char *, str, eq)
 213 DECLARE_COMPARISON(char *, str, ne)
 214
 215 /*
 216  * Same as above, but for strncmp.
 217  */
 218 int test_strn_eq(const char *file, int line, const char *, const char *,
 219                  const char *a, const char *b, size_t s);
 220 int test_strn_ne(const char *file, int line, const char *, const char *,
 221                  const char *a, const char *b, size_t s);
 222
 223 /*
 224  * Equality test for memory blocks where NULL is a legitimate value.
 225  * These calls return 1 if the two memory blocks compare true.
 226  * Otherwise, they return 0 and pretty-print diagnostics.
 227  * These should not be called directly, use the TEST_xxx macros below instead.
 228  */
 229 int test_mem_eq(const char *, int, const char *, const char *,
 230                 const void *, size_t, const void *, size_t);
 231 int test_mem_ne(const char *, int, const char *, const char *,
 232                 const void *, size_t, const void *, size_t);
 233
 234 /*
 235  * Check a boolean result for being true or false.
 236  * They return 1 if the condition is true (i.e. the value is non-zro).
 237  * Otherwise, they return 0 and pretty-prints diagnostics using |desc|.
 238  * These should not be called directly, use the TEST_xxx macros below instead.
 239  */
 240 int test_true(const char *file, int line, const char *s, int b);
 241 int test_false(const char *file, int line, const char *s, int b);
 242
 243 /*
 244  * Comparisons between BIGNUMs.
 245  * BIGNUMS can be compared against other BIGNUMs or zero.
 246  * Some additional equality tests against 1 & specific values are provided.
 247  * Tests for parity are included as well.
 248  */
 249 DECLARE_COMPARISONS(BIGNUM *, BN)
 250 int test_BN_eq_zero(const char *file, int line, const char *s, const BIGNUM *a);
 251 int test_BN_ne_zero(const char *file, int line, const char *s, const BIGNUM *a);
 252 int test_BN_lt_zero(const char *file, int line, const char *s, const BIGNUM *a);
 253 int test_BN_le_zero(const char *file, int line, const char *s, const BIGNUM *a);
 254 int test_BN_gt_zero(const char *file, int line, const char *s, const BIGNUM *a);
 255 int test_BN_ge_zero(const char *file, int line, const char *s, const BIGNUM *a);
 256 int test_BN_eq_one(const char *file, int line, const char *s, const BIGNUM *a);
 257 int test_BN_odd(const char *file, int line, const char *s, const BIGNUM *a);
 258 int test_BN_even(const char *file, int line, const char *s, const BIGNUM *a);
 259 int test_BN_eq_word(const char *file, int line, const char *bns, const char *ws,
 260                     const BIGNUM *a, BN_ULONG w);
 261 int test_BN_abs_eq_word(const char *file, int line, const char *bns,
 262                         const char *ws, const BIGNUM *a, BN_ULONG w);
 263
 264 /*
 265  * Pretty print a failure message.
 266  * These should not be called directly, use the TEST_xxx macros below instead.
 267  */
 268 void test_error(const char *file, int line, const char *desc, ...)
 269     PRINTF_FORMAT(3, 4);
 270 void test_error_c90(const char *desc, ...) PRINTF_FORMAT(1, 2);
 271 void test_info(const char *file, int line, const char *desc, ...)
 272     PRINTF_FORMAT(3, 4);
 273 void test_info_c90(const char *desc, ...) PRINTF_FORMAT(1, 2);
 274 void test_note(const char *desc, ...) PRINTF_FORMAT(1, 2);
 275 void test_openssl_errors(void);
 276 void test_perror(const char *s);
 277
 278 /*
 279  * The following macros provide wrapper calls to the test functions with
 280  * a default description that indicates the file and line number of the error.
 281  *
 282  * The following macros guarantee to evaluate each argument exactly once.
 283  * This allows constructs such as: if(!TEST_ptr(ptr = OPENSSL_malloc(..)))
 284  * to produce better contextual output than:
 285  *      ptr = OPENSSL_malloc(..);
 286  *      if (!TEST_ptr(ptr))
 287  */
 288 # define TEST_int_eq(a, b)    test_int_eq(__FILE__, __LINE__, #a, #b, a, b)
 289 # define TEST_int_ne(a, b)    test_int_ne(__FILE__, __LINE__, #a, #b, a, b)
 290 # define TEST_int_lt(a, b)    test_int_lt(__FILE__, __LINE__, #a, #b, a, b)
 291 # define TEST_int_le(a, b)    test_int_le(__FILE__, __LINE__, #a, #b, a, b)
 292 # define TEST_int_gt(a, b)    test_int_gt(__FILE__, __LINE__, #a, #b, a, b)
 293 # define TEST_int_ge(a, b)    test_int_ge(__FILE__, __LINE__, #a, #b, a, b)
 294
 295 # define TEST_int_eq(a, b)    test_int_eq(__FILE__, __LINE__, #a, #b, a, b)
 296 # define TEST_int_ne(a, b)    test_int_ne(__FILE__, __LINE__, #a, #b, a, b)
 297 # define TEST_int_lt(a, b)    test_int_lt(__FILE__, __LINE__, #a, #b, a, b)
 298 # define TEST_int_le(a, b)    test_int_le(__FILE__, __LINE__, #a, #b, a, b)
 299 # define TEST_int_gt(a, b)    test_int_gt(__FILE__, __LINE__, #a, #b, a, b)
 300 # define TEST_int_ge(a, b)    test_int_ge(__FILE__, __LINE__, #a, #b, a, b)
 301
 302 # define TEST_uint_eq(a, b)   test_uint_eq(__FILE__, __LINE__, #a, #b, a, b)
 303 # define TEST_uint_ne(a, b)   test_uint_ne(__FILE__, __LINE__, #a, #b, a, b)
 304 # define TEST_uint_lt(a, b)   test_uint_lt(__FILE__, __LINE__, #a, #b, a, b)
 305 # define TEST_uint_le(a, b)   test_uint_le(__FILE__, __LINE__, #a, #b, a, b)
 306 # define TEST_uint_gt(a, b)   test_uint_gt(__FILE__, __LINE__, #a, #b, a, b)
 307 # define TEST_uint_ge(a, b)   test_uint_ge(__FILE__, __LINE__, #a, #b, a, b)
 308
 309 # define TEST_char_eq(a, b)   test_char_eq(__FILE__, __LINE__, #a, #b, a, b)
 310 # define TEST_char_ne(a, b)   test_char_ne(__FILE__, __LINE__, #a, #b, a, b)
 311 # define TEST_char_lt(a, b)   test_char_lt(__FILE__, __LINE__, #a, #b, a, b)
 312 # define TEST_char_le(a, b)   test_char_le(__FILE__, __LINE__, #a, #b, a, b)
 313 # define TEST_char_gt(a, b)   test_char_gt(__FILE__, __LINE__, #a, #b, a, b)
 314 # define TEST_char_ge(a, b)   test_char_ge(__FILE__, __LINE__, #a, #b, a, b)
 315
 316 # define TEST_uchar_eq(a, b)  test_uchar_eq(__FILE__, __LINE__, #a, #b, a, b)
 317 # define TEST_uchar_ne(a, b)  test_uchar_ne(__FILE__, __LINE__, #a, #b, a, b)
 318 # define TEST_uchar_lt(a, b)  test_uchar_lt(__FILE__, __LINE__, #a, #b, a, b)
 319 # define TEST_uchar_le(a, b)  test_uchar_le(__FILE__, __LINE__, #a, #b, a, b)
 320 # define TEST_uchar_gt(a, b)  test_uchar_gt(__FILE__, __LINE__, #a, #b, a, b)
 321 # define TEST_uchar_ge(a, b)  test_uchar_ge(__FILE__, __LINE__, #a, #b, a, b)
 322
 323 # define TEST_long_eq(a, b)   test_long_eq(__FILE__, __LINE__, #a, #b, a, b)
 324 # define TEST_long_ne(a, b)   test_long_ne(__FILE__, __LINE__, #a, #b, a, b)
 325 # define TEST_long_lt(a, b)   test_long_lt(__FILE__, __LINE__, #a, #b, a, b)
 326 # define TEST_long_le(a, b)   test_long_le(__FILE__, __LINE__, #a, #b, a, b)
 327 # define TEST_long_gt(a, b)   test_long_gt(__FILE__, __LINE__, #a, #b, a, b)
 328 # define TEST_long_ge(a, b)   test_long_ge(__FILE__, __LINE__, #a, #b, a, b)
 329
 330 # define TEST_ulong_eq(a, b)  test_ulong_eq(__FILE__, __LINE__, #a, #b, a, b)
 331 # define TEST_ulong_ne(a, b)  test_ulong_ne(__FILE__, __LINE__, #a, #b, a, b)
 332 # define TEST_ulong_lt(a, b)  test_ulong_lt(__FILE__, __LINE__, #a, #b, a, b)
 333 # define TEST_ulong_le(a, b)  test_ulong_le(__FILE__, __LINE__, #a, #b, a, b)
 334 # define TEST_ulong_gt(a, b)  test_ulong_gt(__FILE__, __LINE__, #a, #b, a, b)
 335 # define TEST_ulong_ge(a, b)  test_ulong_ge(__FILE__, __LINE__, #a, #b, a, b)
 336
 337 # define TEST_size_t_eq(a, b) test_size_t_eq(__FILE__, __LINE__, #a, #b, a, b)
 338 # define TEST_size_t_ne(a, b) test_size_t_ne(__FILE__, __LINE__, #a, #b, a, b)
 339 # define TEST_size_t_lt(a, b) test_size_t_lt(__FILE__, __LINE__, #a, #b, a, b)
 340 # define TEST_size_t_le(a, b) test_size_t_le(__FILE__, __LINE__, #a, #b, a, b)
 341 # define TEST_size_t_gt(a, b) test_size_t_gt(__FILE__, __LINE__, #a, #b, a, b)
 342 # define TEST_size_t_ge(a, b) test_size_t_ge(__FILE__, __LINE__, #a, #b, a, b)
 343
 344 # define TEST_ptr_eq(a, b)    test_ptr_eq(__FILE__, __LINE__, #a, #b, a, b)
 345 # define TEST_ptr_ne(a, b)    test_ptr_ne(__FILE__, __LINE__, #a, #b, a, b)
 346 # define TEST_ptr(a)          test_ptr(__FILE__, __LINE__, #a, a)
 347 # define TEST_ptr_null(a)     test_ptr_null(__FILE__, __LINE__, #a, a)
 348
 349 # define TEST_str_eq(a, b)    test_str_eq(__FILE__, __LINE__, #a, #b, a, b)
 350 # define TEST_str_ne(a, b)    test_str_ne(__FILE__, __LINE__, #a, #b, a, b)
 351 # define TEST_strn_eq(a, b, n) test_strn_eq(__FILE__, __LINE__, #a, #b, a, b, n)
 352 # define TEST_strn_ne(a, b, n) test_strn_ne(__FILE__, __LINE__, #a, #b, a, b, n)
 353
 354 # define TEST_mem_eq(a, m, b, n) test_mem_eq(__FILE__, __LINE__, #a, #b, a, m, b, n)
 355 # define TEST_mem_ne(a, m, b, n) test_mem_ne(__FILE__, __LINE__, #a, #b, a, m, b, n)
 356
 357 # define TEST_true(a)         test_true(__FILE__, __LINE__, #a, (a) != 0)
 358 # define TEST_false(a)        test_false(__FILE__, __LINE__, #a, (a) != 0)
 359
 360 # define TEST_BN_eq(a, b)     test_BN_eq(__FILE__, __LINE__, #a, #b, a, b)
 361 # define TEST_BN_ne(a, b)     test_BN_ne(__FILE__, __LINE__, #a, #b, a, b)
 362 # define TEST_BN_lt(a, b)     test_BN_lt(__FILE__, __LINE__, #a, #b, a, b)
 363 # define TEST_BN_gt(a, b)     test_BN_gt(__FILE__, __LINE__, #a, #b, a, b)
 364 # define TEST_BN_le(a, b)     test_BN_le(__FILE__, __LINE__, #a, #b, a, b)
 365 # define TEST_BN_ge(a, b)     test_BN_ge(__FILE__, __LINE__, #a, #b, a, b)
 366 # define TEST_BN_eq_zero(a)   test_BN_eq_zero(__FILE__, __LINE__, #a, a)
 367 # define TEST_BN_ne_zero(a)   test_BN_ne_zero(__FILE__, __LINE__, #a, a)
 368 # define TEST_BN_lt_zero(a)   test_BN_lt_zero(__FILE__, __LINE__, #a, a)
 369 # define TEST_BN_gt_zero(a)   test_BN_gt_zero(__FILE__, __LINE__, #a, a)
 370 # define TEST_BN_le_zero(a)   test_BN_le_zero(__FILE__, __LINE__, #a, a)
 371 # define TEST_BN_ge_zero(a)   test_BN_ge_zero(__FILE__, __LINE__, #a, a)
 372 # define TEST_BN_eq_one(a)    test_BN_eq_one(__FILE__, __LINE__, #a, a)
 373 # define TEST_BN_eq_word(a, w) test_BN_eq_word(__FILE__, __LINE__, #a, #w, a, w)
 374 # define TEST_BN_abs_eq_word(a, w) test_BN_abs_eq_word(__FILE__, __LINE__, #a, #w, a, w)
 375 # define TEST_BN_odd(a)       test_BN_odd(__FILE__, __LINE__, #a, a)
 376 # define TEST_BN_even(a)      test_BN_even(__FILE__, __LINE__, #a, a)
 377
 378 /*
 379  * TEST_error(desc, ...) prints an informative error message in the standard
 380  * format.  |desc| is a printf format string.
 381  */
 382 # if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
 383 #  define TEST_error         test_error_c90
 384 #  define TEST_info          test_info_c90
 385 # else
 386 #  define TEST_error(...)    test_error(__FILE__, __LINE__, __VA_ARGS__)
 387 #  define TEST_info(...)     test_info(__FILE__, __LINE__, __VA_ARGS__)
 388 # endif
 389 # define TEST_note           test_note
 390 # define TEST_openssl_errors test_openssl_errors
 391 # define TEST_perror         test_perror
 392
 393 extern BIO *bio_out;
 394 extern BIO *bio_err;
 395
 396 /*
 397  * Formatted output for strings, memory and bignums.
 398  */
 399 void test_output_string(const char *name, const char *m, size_t l);
 400 void test_output_bignum(const char *name, const BIGNUM *bn);
 401 void test_output_memory(const char *name, const unsigned char *m, size_t l);
 402
 403
 404 /*
 405  * Utilities to parse a test file.
 406  */
 407 #define TESTMAXPAIRS        20
 408
 409 typedef struct pair_st {
 410     char *key;
 411     char *value;
 412 } PAIR;
 413
 414 typedef struct stanza_st {
 415     const char *test_file;      /* Input file name */
 416     BIO *fp;                    /* Input file */
 417     int curr;                   /* Current line in file */
 418     int start;                  /* Line where test starts */
 419     int errors;                 /* Error count */
 420     int numtests;               /* Number of tests */
 421     int numskip;                /* Number of skipped tests */
 422     int numpairs;
 423     PAIR pairs[TESTMAXPAIRS];
 424     BIO *key;                   /* temp memory BIO for reading in keys */
 425     char buff[4096];            /* Input buffer for a single key/value */
 426 } STANZA;
 427
 428 /*
 429  * Prepare to start reading the file |testfile| as input.
 430  */
 431 int test_start_file(STANZA *s, const char *testfile);
 432 int test_end_file(STANZA *s);
 433
 434 /*
 435  * Read a stanza from the test file.  A stanza consists of a block
 436  * of lines of the form
 437  *      key = value
 438  * The block is terminated by EOF or a blank line.
 439  * Return 1 if found, 0 on EOF or error.
 440  */
 441 int test_readstanza(STANZA *s);
 442
 443 /*
 444  * Clear a stanza, release all allocated memory.
 445  */
 446 void test_clearstanza(STANZA *s);
 447
 448 #endif                          /* HEADER_TESTUTIL_H */