mdw@git.distorted.org.uk Git - mLib/blob - test/testrig.c

   1 /* -*-c-*-
   2  *
   3  * Generic test driver
   4  *
   5  * (c) 1998 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of the mLib utilities library.
  11  *
  12  * mLib is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU Library General Public License as
  14  * published by the Free Software Foundation; either version 2 of the
  15  * License, or (at your option) any later version.
  16  *
  17  * mLib is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU Library General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Library General Public
  23  * License along with mLib; if not, write to the Free
  24  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  25  * MA 02111-1307, USA.
  26  */
  27
  28 /*----- Header files ------------------------------------------------------*/
  29
  30 #include <ctype.h>
  31 #include <errno.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35
  36 #include "dstr.h"
  37 #include "report.h"
  38 #include "quis.h"
  39 #include "testrig.h"
  40
  41 /*----- Static variables --------------------------------------------------*/
  42
  43 static dstr tok = DSTR_INIT;
  44
  45 enum {
  46   TOK_EOF = 0x100,
  47   TOK_WORD
  48 };
  49
  50 /*----- Main code ---------------------------------------------------------*/
  51
  52 /* --- @decode@ --- *
  53  *
  54  * Arguments:   @int tok@ = token type to decode
  55  *
  56  * Returns:     Pointer to a textual representation of the token.
  57  *
  58  * Use:         Produces a readable representation of a token.
  59  */
  60
  61 static const char *decode(int t)
  62 {
  63   static char buf[4];
  64
  65   switch (t) {
  66     case TOK_EOF:
  67       return ("<eof>");
  68     case TOK_WORD:
  69       return (tok.buf);
  70     default:
  71       buf[0] = t;
  72       buf[1] = 0;
  73       return (buf);
  74   }
  75   return ("<buggy-program>");
  76 }
  77
  78 /* --- @gettok@ --- *
  79  *
  80  * Arguments:   @FILE *fp@ = file handle to read from
  81  *
  82  * Returns:     Type of token read.
  83  *
  84  * Use:         Reads a token from the input stream.
  85  */
  86
  87 static int gettok(FILE *fp)
  88 {
  89   int ch;
  90
  91   /* --- Clear the token accumulator --- */
  92
  93   DRESET(&tok);
  94
  95   /* --- Prime the lookahead character --- */
  96
  97 again:
  98   ch = getc(fp);
  99
 100   /* --- Skip leading whitespace --- */
 101
 102   while (isspace((unsigned char)ch))
 103     ch = getc(fp);
 104
 105   /* --- Trap some special characters --- */
 106
 107   switch (ch) {
 108
 109     /* --- Comments --- */
 110
 111     case '#':
 112       do ch = getc(fp); while (ch != EOF && ch != '\n');
 113       goto again;
 114
 115     /* --- End of file --- */
 116
 117     case EOF:
 118       return (TOK_EOF);
 119
 120     /* --- Quote characters --- */
 121
 122     case '`':
 123       ch = '\'';
 124     case '\'':
 125     case '\"': {
 126       int quote = ch;
 127
 128       for (;;) {
 129         ch = getc(fp);
 130         if (ch == EOF || ch == quote)
 131           break;
 132         if (ch == '\\') {
 133           ch = getc(fp);
 134           if (ch == EOF)
 135             ch = '\\';
 136         }
 137         DPUTC(&tok, ch);
 138       }
 139       DPUTZ(&tok);
 140       return (TOK_WORD);
 141     }
 142
 143     /* --- Self-delimiting things --- */
 144
 145     case ';':
 146     case '{':
 147     case '}':
 148       return (ch);
 149
 150     /* --- Anything else is a word --- */
 151
 152     default:
 153       for (;;) {
 154         DPUTC(&tok, ch);
 155         ch = getc(fp);
 156         switch (ch) {
 157           case EOF:
 158           case ';':
 159           case '{':
 160           case '}':
 161           case '\"':
 162           case '\'':
 163           case '`':
 164             goto done;
 165           default:
 166             if (isspace((unsigned char)ch))
 167               goto done;
 168         }
 169         if (ch == '\\') {
 170           ch = getc(fp);
 171           if (ch == EOF)
 172             ch = '\\';
 173         }
 174       }
 175     done:
 176       ungetc(ch, fp);
 177       DPUTZ(&tok);
 178       return (TOK_WORD);
 179   }
 180 }
 181
 182 /* --- @type_hex@ --- */
 183
 184 static void cvt_hex(const char *s, dstr *d)
 185 {
 186   while (s[0] && s[1]) {
 187     int x = s[0], y = s[1];
 188     if ('0' <= x && x <= '9') x -= '0';
 189     else if ('A' <= x && x <= 'F') x -= 'A' - 10;
 190     else if ('a' <= x && x <= 'f') x -= 'a' - 10;
 191     else x = 0;
 192     if ('0' <= y && y <= '9') y -= '0';
 193     else if ('A' <= y && y <= 'F') y -= 'A' - 10;
 194     else if ('a' <= y && y <= 'f') y -= 'a' - 10;
 195     else y = 0;
 196     DPUTC(d, (x << 4) + y);
 197     s += 2;
 198   }
 199 }
 200
 201 static void dump_hex(dstr *d, FILE *fp)
 202 {
 203   const char *p, *q;
 204   for (p = d->buf, q = p + d->len; p < q; p++)
 205     fprintf(fp, "%02x", *(unsigned char *)p);
 206 }
 207
 208 const test_type type_hex = { cvt_hex, dump_hex };
 209
 210 /* --- @type_string@ --- */
 211
 212 static void cvt_string(const char *s, dstr *d)
 213 {
 214   DPUTS(d, s);
 215 }
 216
 217 static void dump_string(dstr *d, FILE *fp)
 218 {
 219   DWRITE(d, fp);
 220 }
 221
 222 const test_type type_string = { cvt_string, dump_string };
 223
 224 /* --- @type_int@ --- */
 225
 226 static void cvt_int(const char *s, dstr *d)
 227 {
 228   DENSURE(d, sizeof(int));
 229   sscanf(s, "%i", (int *)d->buf);
 230 }
 231
 232 static void dump_int(dstr *d, FILE *fp)
 233 {
 234   fprintf(fp, "%i", *(int *)d->buf);
 235 }
 236
 237 const test_type type_int = { cvt_int, dump_int };
 238
 239 /* --- @type_long@ --- */
 240
 241 static void cvt_long(const char *s, dstr *d)
 242 {
 243   DENSURE(d, sizeof(long));
 244   *(long *)d->buf = strtol(s, 0, 0);
 245 }
 246
 247 static void dump_long(dstr *d, FILE *fp)
 248 {
 249   fprintf(fp, "%li", *(long *)d->buf);
 250 }
 251
 252 const test_type type_long = { cvt_long, dump_long };
 253
 254 /* --- @type_ulong@ --- */
 255
 256 static void cvt_ulong(const char *s, dstr *d)
 257 {
 258   DENSURE(d, sizeof(unsigned long));
 259   *(unsigned long *)d->buf = strtoul(s, 0, 0);
 260 }
 261
 262 static void dump_ulong(dstr *d, FILE *fp)
 263 {
 264   fprintf(fp, "%lu", *(unsigned long *)d->buf);
 265 }
 266
 267 const test_type type_ulong = { cvt_ulong, dump_ulong };
 268
 269 /* --- @type_uint32@ --- */
 270
 271 static void cvt_uint32(const char *buf, dstr *d)
 272 {
 273   DENSURE(d, sizeof(uint32));
 274   *(uint32 *)d->buf = strtoul(buf, 0, 0);
 275 }
 276
 277 static void dump_uint32(dstr *d, FILE *fp)
 278 {
 279   fprintf(fp, "%lu\n", (unsigned long)*(uint32 *)d->buf);
 280 }
 281
 282 const test_type type_uint32 = { cvt_uint32, dump_uint32 };
 283
 284 /* --- @test_do@ --- *
 285  *
 286  * Arguments:   @const test_suite suites[]@ = pointer to suite definitions
 287  *              @FILE *fp@ = test vector file, ready opened
 288  *              @test_results *results@ = where to put results
 289  *
 290  * Returns:     Negative if something bad happened, or the number of
 291  *              failures.
 292  *
 293  * Use:         Runs a collection of tests against a file of test vectors and
 294  *              reports the results.
 295  */
 296
 297 int test_do(const test_suite suites[], FILE *fp, test_results *results)
 298 {
 299   test_results dummy;
 300   dstr dv[TEST_FIELDMAX];
 301   const test_suite *ss;
 302   const test_chunk *chunks = suites[0].chunks;
 303   const test_chunk *cch;
 304   int rc = -1;
 305   int ok;
 306   int i;
 307
 308   for (i = 0; i < TEST_FIELDMAX; i++)
 309     DCREATE(&dv[i]);
 310
 311   if (!results)
 312     results = &dummy;
 313   results->tests = 0;
 314   results->failed = 0;
 315
 316   for (;;) {
 317     int t = gettok(fp);
 318
 319     /* --- This is a reasonable place to stop --- */
 320
 321     if (t == TOK_EOF)
 322       break;
 323
 324     /* --- Pick out the chunk name --- */
 325
 326     if (t != TOK_WORD) {
 327       moan("expected <word>; found `%s'", decode(t));
 328       goto done;
 329     }
 330
 331     if (strcmp(tok.buf, "SUITE") == 0) {
 332       t = gettok(fp);
 333       if (t != TOK_WORD) {
 334         moan("expected <word>; found `%s'", decode(t));
 335         goto done;
 336       }
 337       for (ss = suites; ; ss++) {
 338         if (!ss->name) {
 339           chunks = 0;
 340           break;
 341         }
 342         if (strcmp(tok.buf, ss->name) == 0) {
 343           chunks = ss->chunks;
 344           break;
 345         }
 346       }
 347       continue;
 348     }
 349
 350     /* --- Find the right chunk block --- */
 351
 352     if (!chunks)
 353       goto skip_chunk;
 354     for (cch = chunks; ; cch++) {
 355       if (!cch->name)
 356         goto skip_chunk;
 357       if (strcmp(tok.buf, cch->name) == 0)
 358         break;
 359     }
 360
 361     /* --- Past the open brace to the first chunk --- */
 362
 363     if ((t = gettok(fp)) != '{') {
 364       moan("expected `{'; found `%s'", decode(t));
 365       goto done;
 366     }
 367
 368     /* --- Start on the test data now --- */
 369
 370     printf("%s: ", cch->name);
 371     fflush(stdout);
 372     ok = 1;
 373
 374     for (;;) {
 375       t = gettok(fp);
 376
 377       /* --- Accept a close brace --- */
 378
 379       if (t == '}')
 380         break;
 381
 382       /* --- Otherwise I expect a list of words --- */
 383
 384       for (i = 0; cch->f[i]; i++) {
 385         DRESET(&dv[i]);
 386         if (t != TOK_WORD) {
 387           moan("expected <word>; found `%s'", decode(t));
 388           goto done;
 389         }
 390         cch->f[i]->cvt(tok.buf, &dv[i]);
 391         t = gettok(fp);
 392       }
 393
 394       /* --- And a terminating semicolon --- */
 395
 396       if (t != ';') {
 397         moan("expected `;'; found `%s'", decode(t));
 398         goto done;
 399       }
 400
 401       /* --- Run the test code --- */
 402
 403       if (!cch->test(dv)) {
 404         ok = 0;
 405         printf("%s: ", cch->name);
 406         for (i = 0; i < results->tests; i++) putchar('.');
 407         results->failed++;
 408       }
 409       putchar('.');
 410       results->tests++;
 411       fflush(stdout);
 412     }
 413
 414     puts(ok ? " ok" : " failed");
 415     fflush(stdout);
 416     continue;
 417
 418   skip_chunk:
 419     if ((t = gettok(fp)) != '{') {
 420       moan("expected '{'; found `%s'", decode(t));
 421       goto done;
 422     }
 423     for (;;) {
 424       t = gettok(fp);
 425       if (t == '}')
 426         break;
 427       while (t == TOK_WORD)
 428         t = gettok(fp);
 429       if (t != ';') {
 430         moan("expected `;'; found `%s'", decode(t));
 431         goto done;
 432       }
 433     }
 434   }
 435   rc = results->failed;
 436
 437   /* --- All done --- */
 438
 439 done:
 440   for (i = 0; i < TEST_FIELDMAX; i++)
 441     dstr_destroy(&dv[i]);
 442   return (rc);
 443 }
 444
 445 /* --- @test_run@ --- *
 446  *
 447  * Arguments:   @int argc@ = number of command line arguments
 448  *              @char *argv[]@ = pointer to command line arguments
 449  *              @const test_chunk chunk[]@ = pointer to chunk definitions
 450  *              @const char *vec@ = name of default test vector file
 451  *
 452  * Returns:     Doesn't.
 453  *
 454  * Use:         Runs a set of test vectors to ensure that a component is
 455  *              working properly.
 456  */
 457
 458 void test_run(int argc, char *argv[],
 459               const test_chunk chunk[],
 460               const char *vec)
 461 {
 462   FILE *fp;
 463   test_results res;
 464   int rc;
 465   test_suite suite[2];
 466
 467   /* --- Silly bits of initialization --- */
 468
 469   ego(argv[0]);
 470
 471   /* --- Parse command line arguments --- */
 472
 473   {
 474     const char *p = 0;
 475     int i = 0;
 476
 477     for (;;) {
 478       if (!p || !*p) {
 479         if (i >= argc - 1)
 480           break;
 481         p = argv[++i];
 482         if (strcmp(p, "--") == 0) {
 483           i++;
 484           break;
 485         }
 486         if (p[0] != '-' || p[1] == 0)
 487           break;
 488         p++;
 489       }
 490       switch (*p++) {
 491         case 'h':
 492           printf("%s test driver\n"
 493                  "Usage: %s [-f FILENAME]\n", QUIS, QUIS);
 494           exit(0);
 495         case 'f':
 496           if (!*p) {
 497             if (i >= argc - 1)
 498               die(1, "option `-f' expects an argument");
 499             p = argv[++i];
 500           }
 501           vec = p;
 502           p = 0;
 503           break;
 504         default:
 505           die(1, "option `-%c' unknown", p[-1]);
 506           break;
 507       }
 508     }
 509   }
 510
 511   /* --- Start parsing from the file --- */
 512
 513   if ((fp = fopen(vec, "r")) == 0)
 514     die(1, "couldn't open test vector file `%s': %s", vec, strerror(errno));
 515   suite[0].name = "simple";
 516   suite[0].chunks = chunk;
 517   suite[1].name = 0;
 518   rc = test_do(suite, fp, &res);
 519   if (rc < 0)
 520     exit(127);
 521   if (res.failed) {
 522     fprintf(stderr, "FAILED %u of %u test%s\n",
 523             res.failed, res.tests, res.tests == 1 ? "" : "s");
 524   } else {
 525     fprintf(stderr, "PASSED all %u test%s\n",
 526             res.tests, res.tests == 1 ? "" : "s");
 527   }
 528   exit(!!res.failed);
 529 }
 530
 531 /*----- That's all, folks -------------------------------------------------*/