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 /* Shorthand if tear_down does nothing. */
 103 # define EXECUTE_TEST_NO_TEARDOWN(execute_func)\
 104         result = execute_func(fixture);\
 105         return result
 106
 107 /*
 108  * TEST_CASE_NAME is defined as the name of the test case function where
 109  * possible; otherwise we get by with the file name and line number.
 110  */
 111 # if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
 112 #  if defined(_MSC_VER)
 113 #   define TEST_CASE_NAME __FUNCTION__
 114 #  else
 115 #   define testutil_stringify_helper(s) #s
 116 #   define testutil_stringify(s) testutil_stringify_helper(s)
 117 #   define TEST_CASE_NAME __FILE__ ":" testutil_stringify(__LINE__)
 118 #  endif                        /* _MSC_VER */
 119 # else
 120 #  define TEST_CASE_NAME __func__
 121 # endif                         /* __STDC_VERSION__ */
 122
 123 /*
 124  * Tests that need access to command line arguments should use the functions:
 125  * test_get_argument(int n) to get the nth argument, the first argument is
 126  *      argument 0.  This function returns NULL on error.
 127  * test_get_argument_count() to get the count of the arguments.
 128  * test_has_option(const char *) to check if the specified option was passed.
 129  * test_get_option_argument(const char *) to get an option which includes an
 130  *      argument.  NULL is returns if the option is not found.
 131  * const char *test_get_program_name(void) returns the name of the test program
 132  *      being executed.
 133  */
 134 const char *test_get_program_name(void);
 135 char *test_get_argument(size_t n);
 136 size_t test_get_argument_count(void);
 137 int test_has_option(const char *option);
 138 const char *test_get_option_argument(const char *option);
 139
 140 /*
 141  * Internal helpers. Test programs shouldn't use these directly, but should
 142  * rather link to one of the helper main() methods.
 143  */
 144
 145 void add_test(const char *test_case_name, int (*test_fn) (void));
 146 void add_all_tests(const char *test_case_name, int (*test_fn)(int idx), int num,
 147                    int subtest);
 148
 149 /*
 150  * Declarations for user defined functions.
 151  * The first two return a boolean indicating that the test should not proceed.
 152  */
 153 int global_init(void);
 154 int setup_tests(void);
 155 void cleanup_tests(void);
 156
 157 /*
 158  *  Test assumption verification helpers.
 159  */
 160
 161 #define PRINTF_FORMAT(a, b)
 162 #if defined(__GNUC__) && defined(__STDC_VERSION__)
 163   /*
 164    * Because we support the 'z' modifier, which made its appearance in C99,
 165    * we can't use __attribute__ with pre C99 dialects.
 166    */
 167 # if __STDC_VERSION__ >= 199901L
 168 #  undef PRINTF_FORMAT
 169 #  define PRINTF_FORMAT(a, b)   __attribute__ ((format(printf, a, b)))
 170 # endif
 171 #endif
 172
 173 # define DECLARE_COMPARISON(type, name, opname)                         \
 174     int test_ ## name ## _ ## opname(const char *, int,                 \
 175                                      const char *, const char *,        \
 176                                      const type, const type);
 177
 178 # define DECLARE_COMPARISONS(type, name)                                \
 179     DECLARE_COMPARISON(type, name, eq)                                  \
 180     DECLARE_COMPARISON(type, name, ne)                                  \
 181     DECLARE_COMPARISON(type, name, lt)                                  \
 182     DECLARE_COMPARISON(type, name, le)                                  \
 183     DECLARE_COMPARISON(type, name, gt)                                  \
 184     DECLARE_COMPARISON(type, name, ge)
 185
 186 DECLARE_COMPARISONS(int, int)
 187 DECLARE_COMPARISONS(unsigned int, uint)
 188 DECLARE_COMPARISONS(char, char)
 189 DECLARE_COMPARISONS(unsigned char, uchar)
 190 DECLARE_COMPARISONS(long, long)
 191 DECLARE_COMPARISONS(unsigned long, ulong)
 192 /*
 193  * Because this comparison uses a printf format specifier that's not
 194  * universally known (yet), we provide an option to not have it declared.
 195  */
 196 # ifndef TESTUTIL_NO_size_t_COMPARISON
 197 DECLARE_COMPARISONS(size_t, size_t)
 198 # endif
 199
 200 /*
 201  * Pointer comparisons against other pointers and null.
 202  * These functions return 1 if the test is true.
 203  * Otherwise, they return 0 and pretty-print diagnostics.
 204  * These should not be called directly, use the TEST_xxx macros below instead.
 205  */
 206 DECLARE_COMPARISON(void *, ptr, eq)
 207 DECLARE_COMPARISON(void *, ptr, ne)
 208 int test_ptr(const char *file, int line, const char *s, const void *p);
 209 int test_ptr_null(const char *file, int line, const char *s, const void *p);
 210
 211 /*
 212  * Equality tests for strings where NULL is a legitimate value.
 213  * These calls return 1 if the two passed strings compare true.
 214  * Otherwise, they return 0 and pretty-print diagnostics.
 215  * These should not be called directly, use the TEST_xxx macros below instead.
 216  */
 217 DECLARE_COMPARISON(char *, str, eq)
 218 DECLARE_COMPARISON(char *, str, ne)
 219
 220 /*
 221  * Same as above, but for strncmp.
 222  */
 223 int test_strn_eq(const char *file, int line, const char *, const char *,
 224                  const char *a, const char *b, size_t s);
 225 int test_strn_ne(const char *file, int line, const char *, const char *,
 226                  const char *a, const char *b, size_t s);
 227
 228 /*
 229  * Equality test for memory blocks where NULL is a legitimate value.
 230  * These calls return 1 if the two memory blocks compare true.
 231  * Otherwise, they return 0 and pretty-print diagnostics.
 232  * These should not be called directly, use the TEST_xxx macros below instead.
 233  */
 234 int test_mem_eq(const char *, int, const char *, const char *,
 235                 const void *, size_t, const void *, size_t);
 236 int test_mem_ne(const char *, int, const char *, const char *,
 237                 const void *, size_t, const void *, size_t);
 238
 239 /*
 240  * Check a boolean result for being true or false.
 241  * They return 1 if the condition is true (i.e. the value is non-zro).
 242  * Otherwise, they return 0 and pretty-prints diagnostics using |desc|.
 243  * These should not be called directly, use the TEST_xxx macros below instead.
 244  */
 245 int test_true(const char *file, int line, const char *s, int b);
 246 int test_false(const char *file, int line, const char *s, int b);
 247
 248 /*
 249  * Comparisons between BIGNUMs.
 250  * BIGNUMS can be compared against other BIGNUMs or zero.
 251  * Some additional equality tests against 1 & specific values are provided.
 252  * Tests for parity are included as well.
 253  */
 254 DECLARE_COMPARISONS(BIGNUM *, BN)
 255 int test_BN_eq_zero(const char *file, int line, const char *s, const BIGNUM *a);
 256 int test_BN_ne_zero(const char *file, int line, const char *s, const BIGNUM *a);
 257 int test_BN_lt_zero(const char *file, int line, const char *s, const BIGNUM *a);
 258 int test_BN_le_zero(const char *file, int line, const char *s, const BIGNUM *a);
 259 int test_BN_gt_zero(const char *file, int line, const char *s, const BIGNUM *a);
 260 int test_BN_ge_zero(const char *file, int line, const char *s, const BIGNUM *a);
 261 int test_BN_eq_one(const char *file, int line, const char *s, const BIGNUM *a);
 262 int test_BN_odd(const char *file, int line, const char *s, const BIGNUM *a);
 263 int test_BN_even(const char *file, int line, const char *s, const BIGNUM *a);
 264 int test_BN_eq_word(const char *file, int line, const char *bns, const char *ws,
 265                     const BIGNUM *a, BN_ULONG w);
 266 int test_BN_abs_eq_word(const char *file, int line, const char *bns,
 267                         const char *ws, const BIGNUM *a, BN_ULONG w);
 268
 269 /*
 270  * Pretty print a failure message.
 271  * These should not be called directly, use the TEST_xxx macros below instead.
 272  */
 273 void test_error(const char *file, int line, const char *desc, ...)
 274     PRINTF_FORMAT(3, 4);
 275 void test_error_c90(const char *desc, ...) PRINTF_FORMAT(1, 2);
 276 void test_info(const char *file, int line, const char *desc, ...)
 277     PRINTF_FORMAT(3, 4);
 278 void test_info_c90(const char *desc, ...) PRINTF_FORMAT(1, 2);
 279 void test_note(const char *desc, ...) PRINTF_FORMAT(1, 2);
 280 void test_openssl_errors(void);
 281 void test_perror(const char *s);
 282
 283 /*
 284  * The following macros provide wrapper calls to the test functions with
 285  * a default description that indicates the file and line number of the error.
 286  *
 287  * The following macros guarantee to evaluate each argument exactly once.
 288  * This allows constructs such as: if(!TEST_ptr(ptr = OPENSSL_malloc(..)))
 289  * to produce better contextual output than:
 290  *      ptr = OPENSSL_malloc(..);
 291  *      if (!TEST_ptr(ptr))
 292  */
 293 # define TEST_int_eq(a, b)    test_int_eq(__FILE__, __LINE__, #a, #b, a, b)
 294 # define TEST_int_ne(a, b)    test_int_ne(__FILE__, __LINE__, #a, #b, a, b)
 295 # define TEST_int_lt(a, b)    test_int_lt(__FILE__, __LINE__, #a, #b, a, b)
 296 # define TEST_int_le(a, b)    test_int_le(__FILE__, __LINE__, #a, #b, a, b)
 297 # define TEST_int_gt(a, b)    test_int_gt(__FILE__, __LINE__, #a, #b, a, b)
 298 # define TEST_int_ge(a, b)    test_int_ge(__FILE__, __LINE__, #a, #b, a, b)
 299
 300 # define TEST_int_eq(a, b)    test_int_eq(__FILE__, __LINE__, #a, #b, a, b)
 301 # define TEST_int_ne(a, b)    test_int_ne(__FILE__, __LINE__, #a, #b, a, b)
 302 # define TEST_int_lt(a, b)    test_int_lt(__FILE__, __LINE__, #a, #b, a, b)
 303 # define TEST_int_le(a, b)    test_int_le(__FILE__, __LINE__, #a, #b, a, b)
 304 # define TEST_int_gt(a, b)    test_int_gt(__FILE__, __LINE__, #a, #b, a, b)
 305 # define TEST_int_ge(a, b)    test_int_ge(__FILE__, __LINE__, #a, #b, a, b)
 306
 307 # define TEST_uint_eq(a, b)   test_uint_eq(__FILE__, __LINE__, #a, #b, a, b)
 308 # define TEST_uint_ne(a, b)   test_uint_ne(__FILE__, __LINE__, #a, #b, a, b)
 309 # define TEST_uint_lt(a, b)   test_uint_lt(__FILE__, __LINE__, #a, #b, a, b)
 310 # define TEST_uint_le(a, b)   test_uint_le(__FILE__, __LINE__, #a, #b, a, b)
 311 # define TEST_uint_gt(a, b)   test_uint_gt(__FILE__, __LINE__, #a, #b, a, b)
 312 # define TEST_uint_ge(a, b)   test_uint_ge(__FILE__, __LINE__, #a, #b, a, b)
 313
 314 # define TEST_char_eq(a, b)   test_char_eq(__FILE__, __LINE__, #a, #b, a, b)
 315 # define TEST_char_ne(a, b)   test_char_ne(__FILE__, __LINE__, #a, #b, a, b)
 316 # define TEST_char_lt(a, b)   test_char_lt(__FILE__, __LINE__, #a, #b, a, b)
 317 # define TEST_char_le(a, b)   test_char_le(__FILE__, __LINE__, #a, #b, a, b)
 318 # define TEST_char_gt(a, b)   test_char_gt(__FILE__, __LINE__, #a, #b, a, b)
 319 # define TEST_char_ge(a, b)   test_char_ge(__FILE__, __LINE__, #a, #b, a, b)
 320
 321 # define TEST_uchar_eq(a, b)  test_uchar_eq(__FILE__, __LINE__, #a, #b, a, b)
 322 # define TEST_uchar_ne(a, b)  test_uchar_ne(__FILE__, __LINE__, #a, #b, a, b)
 323 # define TEST_uchar_lt(a, b)  test_uchar_lt(__FILE__, __LINE__, #a, #b, a, b)
 324 # define TEST_uchar_le(a, b)  test_uchar_le(__FILE__, __LINE__, #a, #b, a, b)
 325 # define TEST_uchar_gt(a, b)  test_uchar_gt(__FILE__, __LINE__, #a, #b, a, b)
 326 # define TEST_uchar_ge(a, b)  test_uchar_ge(__FILE__, __LINE__, #a, #b, a, b)
 327
 328 # define TEST_long_eq(a, b)   test_long_eq(__FILE__, __LINE__, #a, #b, a, b)
 329 # define TEST_long_ne(a, b)   test_long_ne(__FILE__, __LINE__, #a, #b, a, b)
 330 # define TEST_long_lt(a, b)   test_long_lt(__FILE__, __LINE__, #a, #b, a, b)
 331 # define TEST_long_le(a, b)   test_long_le(__FILE__, __LINE__, #a, #b, a, b)
 332 # define TEST_long_gt(a, b)   test_long_gt(__FILE__, __LINE__, #a, #b, a, b)
 333 # define TEST_long_ge(a, b)   test_long_ge(__FILE__, __LINE__, #a, #b, a, b)
 334
 335 # define TEST_ulong_eq(a, b)  test_ulong_eq(__FILE__, __LINE__, #a, #b, a, b)
 336 # define TEST_ulong_ne(a, b)  test_ulong_ne(__FILE__, __LINE__, #a, #b, a, b)
 337 # define TEST_ulong_lt(a, b)  test_ulong_lt(__FILE__, __LINE__, #a, #b, a, b)
 338 # define TEST_ulong_le(a, b)  test_ulong_le(__FILE__, __LINE__, #a, #b, a, b)
 339 # define TEST_ulong_gt(a, b)  test_ulong_gt(__FILE__, __LINE__, #a, #b, a, b)
 340 # define TEST_ulong_ge(a, b)  test_ulong_ge(__FILE__, __LINE__, #a, #b, a, b)
 341
 342 # define TEST_size_t_eq(a, b) test_size_t_eq(__FILE__, __LINE__, #a, #b, a, b)
 343 # define TEST_size_t_ne(a, b) test_size_t_ne(__FILE__, __LINE__, #a, #b, a, b)
 344 # define TEST_size_t_lt(a, b) test_size_t_lt(__FILE__, __LINE__, #a, #b, a, b)
 345 # define TEST_size_t_le(a, b) test_size_t_le(__FILE__, __LINE__, #a, #b, a, b)
 346 # define TEST_size_t_gt(a, b) test_size_t_gt(__FILE__, __LINE__, #a, #b, a, b)
 347 # define TEST_size_t_ge(a, b) test_size_t_ge(__FILE__, __LINE__, #a, #b, a, b)
 348
 349 # define TEST_ptr_eq(a, b)    test_ptr_eq(__FILE__, __LINE__, #a, #b, a, b)
 350 # define TEST_ptr_ne(a, b)    test_ptr_ne(__FILE__, __LINE__, #a, #b, a, b)
 351 # define TEST_ptr(a)          test_ptr(__FILE__, __LINE__, #a, a)
 352 # define TEST_ptr_null(a)     test_ptr_null(__FILE__, __LINE__, #a, a)
 353
 354 # define TEST_str_eq(a, b)    test_str_eq(__FILE__, __LINE__, #a, #b, a, b)
 355 # define TEST_str_ne(a, b)    test_str_ne(__FILE__, __LINE__, #a, #b, a, b)
 356 # define TEST_strn_eq(a, b, n) test_strn_eq(__FILE__, __LINE__, #a, #b, a, b, n)
 357 # define TEST_strn_ne(a, b, n) test_strn_ne(__FILE__, __LINE__, #a, #b, a, b, n)
 358
 359 # define TEST_mem_eq(a, m, b, n) test_mem_eq(__FILE__, __LINE__, #a, #b, a, m, b, n)
 360 # define TEST_mem_ne(a, m, b, n) test_mem_ne(__FILE__, __LINE__, #a, #b, a, m, b, n)
 361
 362 # define TEST_true(a)         test_true(__FILE__, __LINE__, #a, (a) != 0)
 363 # define TEST_false(a)        test_false(__FILE__, __LINE__, #a, (a) != 0)
 364
 365 # define TEST_BN_eq(a, b)     test_BN_eq(__FILE__, __LINE__, #a, #b, a, b)
 366 # define TEST_BN_ne(a, b)     test_BN_ne(__FILE__, __LINE__, #a, #b, a, b)
 367 # define TEST_BN_lt(a, b)     test_BN_lt(__FILE__, __LINE__, #a, #b, a, b)
 368 # define TEST_BN_gt(a, b)     test_BN_gt(__FILE__, __LINE__, #a, #b, a, b)
 369 # define TEST_BN_le(a, b)     test_BN_le(__FILE__, __LINE__, #a, #b, a, b)
 370 # define TEST_BN_ge(a, b)     test_BN_ge(__FILE__, __LINE__, #a, #b, a, b)
 371 # define TEST_BN_eq_zero(a)   test_BN_eq_zero(__FILE__, __LINE__, #a, a)
 372 # define TEST_BN_ne_zero(a)   test_BN_ne_zero(__FILE__, __LINE__, #a, a)
 373 # define TEST_BN_lt_zero(a)   test_BN_lt_zero(__FILE__, __LINE__, #a, a)
 374 # define TEST_BN_gt_zero(a)   test_BN_gt_zero(__FILE__, __LINE__, #a, a)
 375 # define TEST_BN_le_zero(a)   test_BN_le_zero(__FILE__, __LINE__, #a, a)
 376 # define TEST_BN_ge_zero(a)   test_BN_ge_zero(__FILE__, __LINE__, #a, a)
 377 # define TEST_BN_eq_one(a)    test_BN_eq_one(__FILE__, __LINE__, #a, a)
 378 # define TEST_BN_eq_word(a, w) test_BN_eq_word(__FILE__, __LINE__, #a, #w, a, w)
 379 # define TEST_BN_abs_eq_word(a, w) test_BN_abs_eq_word(__FILE__, __LINE__, #a, #w, a, w)
 380 # define TEST_BN_odd(a)       test_BN_odd(__FILE__, __LINE__, #a, a)
 381 # define TEST_BN_even(a)      test_BN_even(__FILE__, __LINE__, #a, a)
 382
 383 /*
 384  * TEST_error(desc, ...) prints an informative error message in the standard
 385  * format.  |desc| is a printf format string.
 386  */
 387 # if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
 388 #  define TEST_error         test_error_c90
 389 #  define TEST_info          test_info_c90
 390 # else
 391 #  define TEST_error(...)    test_error(__FILE__, __LINE__, __VA_ARGS__)
 392 #  define TEST_info(...)     test_info(__FILE__, __LINE__, __VA_ARGS__)
 393 # endif
 394 # define TEST_note           test_note
 395 # define TEST_openssl_errors test_openssl_errors
 396 # define TEST_perror         test_perror
 397
 398 extern BIO *bio_out;
 399 extern BIO *bio_err;
 400
 401 /*
 402  * Formatted output for strings, memory and bignums.
 403  */
 404 void test_output_string(const char *name, const char *m, size_t l);
 405 void test_output_bignum(const char *name, const BIGNUM *bn);
 406 void test_output_memory(const char *name, const unsigned char *m, size_t l);
 407
 408
 409 /*
 410  * Utilities to parse a test file.
 411  */
 412 #define TESTMAXPAIRS        20
 413
 414 typedef struct pair_st {
 415     char *key;
 416     char *value;
 417 } PAIR;
 418
 419 typedef struct stanza_st {
 420     const char *test_file;      /* Input file name */
 421     BIO *fp;                    /* Input file */
 422     int curr;                   /* Current line in file */
 423     int start;                  /* Line where test starts */
 424     int errors;                 /* Error count */
 425     int numtests;               /* Number of tests */
 426     int numskip;                /* Number of skipped tests */
 427     int numpairs;
 428     PAIR pairs[TESTMAXPAIRS];
 429     BIO *key;                   /* temp memory BIO for reading in keys */
 430     char buff[4096];            /* Input buffer for a single key/value */
 431 } STANZA;
 432
 433 /*
 434  * Prepare to start reading the file |testfile| as input.
 435  */
 436 int test_start_file(STANZA *s, const char *testfile);
 437 int test_end_file(STANZA *s);
 438
 439 /*
 440  * Read a stanza from the test file.  A stanza consists of a block
 441  * of lines of the form
 442  *      key = value
 443  * The block is terminated by EOF or a blank line.
 444  * Return 1 if found, 0 on EOF or error.
 445  */
 446 int test_readstanza(STANZA *s);
 447
 448 /*
 449  * Clear a stanza, release all allocated memory.
 450  */
 451 void test_clearstanza(STANZA *s);
 452
 453 #endif                          /* HEADER_TESTUTIL_H */