1 /* $OpenBSD: fmt_test.c,v 1.16 2020/02/14 19:17:34 schwarze Exp $ */ 2 3 /* 4 * Combined tests for fmt_scaled and scan_scaled. 5 * Ian Darwin, January 2001. Public domain. 6 */ 7 8 #include <stdio.h> 9 #include <stdlib.h> 10 #include <string.h> 11 #include <sys/types.h> 12 #include <errno.h> 13 #include <limits.h> 14 #include <unistd.h> 15 16 #include <util.h> 17 18 static int fmt_test(void); 19 static int scan_test(void); 20 21 static void print_errno(int e); 22 static int assert_int(int testnum, int checknum, int expect, int result); 23 static int assert_errno(int testnum, int checknum, int expect, int result); 24 static int assert_llong(int testnum, int checknum, long long expect, long long result); 25 static int assert_str(int testnum, int checknum, char * expect, char * result); 26 27 extern char *__progname; 28 static int verbose = 0; 29 30 __dead static void usage(int stat) 31 { 32 fprintf(stderr, "usage: %s [-v]\n", __progname); 33 exit(stat); 34 } 35 36 int 37 main(int argc, char **argv) 38 { 39 int i, ch; 40 41 while ((ch = getopt(argc, argv, "hv")) != -1) { 42 switch (ch) { 43 case 'v': 44 verbose = 1; 45 break; 46 case 'h': 47 usage(0); 48 case '?': 49 default: 50 usage(1); 51 } 52 } 53 argc -= optind; 54 argv += optind; 55 56 if (verbose) 57 printf("Starting fmt_test\n"); 58 i = fmt_test(); 59 if (verbose) 60 printf("Starting scan_test\n"); 61 i += scan_test(); 62 if (i) { 63 printf("*** %d errors in libutil/fmt_scaled tests ***\n", i); 64 } else { 65 if (verbose) 66 printf("Tests done; no unexpected errors\n"); 67 } 68 return i; 69 } 70 71 /************** tests for fmt_scaled *******************/ 72 73 static struct { /* the test cases */ 74 long long input; 75 char *expect; 76 int err; 77 } ddata[] = { 78 { 0, "0B", 0 }, 79 { 1, "1B", 0 }, 80 { -1, "-1B", 0 }, 81 { 100, "100B", 0}, 82 { -100, "-100B", 0}, 83 { 999, "999B", 0 }, 84 { 1000, "1000B", 0 }, 85 { 1023, "1023B", 0 }, 86 { -1023, "-1023B", 0 }, 87 { 1024, "1.0K", 0 }, 88 { 1025, "1.0K", 0 }, 89 { 1234, "1.2K", 0 }, 90 { -1234, "-1.2K", 0 }, 91 { 1484, "1.4K", 0 }, /* rounding boundary, down */ 92 { 1485, "1.5K", 0 }, /* rounding boundary, up */ 93 { -1484, "-1.4K", 0 }, /* rounding boundary, down */ 94 { -1485, "-1.5K", 0 }, /* rounding boundary, up */ 95 { 1536, "1.5K", 0 }, 96 { 1786, "1.7K", 0 }, 97 { 1800, "1.8K", 0 }, 98 { 2000, "2.0K", 0 }, 99 { 123456, "121K", 0 }, 100 { 578318, "565K", 0 }, 101 { 902948, "882K", 0 }, 102 { 1048576, "1.0M", 0}, 103 { 1048628, "1.0M", 0}, 104 { 1049447, "1.0M", 0}, 105 { -102400, "-100K", 0}, 106 { -103423, "-101K", 0 }, 107 { 7299072, "7.0M", 0 }, 108 { 409478144L, "391M", 0 }, 109 { -409478144L, "-391M", 0 }, 110 { 999999999L, "954M", 0 }, 111 { 1499999999L, "1.4G", 0 }, 112 { 12475423744LL, "11.6G", 0}, 113 { 1LL<<61, "2.0E", 0 }, 114 { 1LL<<62, "4.0E", 0 }, 115 { 1LL<<63, "", ERANGE }, 116 { 1099512676352LL, "1.0T", 0} 117 }; 118 # define DDATA_LENGTH (sizeof ddata/sizeof *ddata) 119 120 static int 121 fmt_test(void) 122 { 123 unsigned int i, e, errs = 0; 124 int ret; 125 char buf[FMT_SCALED_STRSIZE]; 126 127 for (i = 0; i < DDATA_LENGTH; i++) { 128 strlcpy(buf, "UNSET", FMT_SCALED_STRSIZE); 129 errno = 0; 130 ret = fmt_scaled(ddata[i].input, buf); 131 e = errno; 132 if (verbose) { 133 printf("%lld --> %s (%d)", ddata[i].input, buf, ret); 134 if (ret == -1) 135 print_errno(e); 136 printf("\n"); 137 } 138 if (ret == -1) 139 errs += assert_int(i, 1, ret, ddata[i].err == 0 ? 0 : -1); 140 if (ddata[i].err) 141 errs += assert_errno(i, 2, ddata[i].err, e); 142 else 143 errs += assert_str(i, 3, ddata[i].expect, buf); 144 } 145 146 return errs; 147 } 148 149 /************** tests for scan_scaled *******************/ 150 151 152 #define IMPROBABLE (-42) 153 154 struct { /* the test cases */ 155 char *input; 156 long long result; 157 int err; 158 } sdata[] = { 159 { "0", 0, 0 }, 160 { "123", 123, 0 }, 161 { "1k", 1024, 0 }, /* lower case */ 162 { "100.944", 100, 0 }, /* should --> 100 (truncates fraction) */ 163 { "10099", 10099LL, 0 }, 164 { "1M", 1048576LL, 0 }, 165 { "1.1M", 1153433LL, 0 }, /* fractions */ 166 { "1.111111111111111111M", 1165084LL, 0 }, /* fractions */ 167 { "1.55M", 1625292LL, 0 }, /* fractions */ 168 { "1.9M", 1992294LL, 0 }, /* fractions */ 169 { "-2K", -2048LL, 0 }, /* negatives */ 170 { "-2.2K", -2252LL, 0 }, /* neg with fract */ 171 { "4.5k", 4608, 0 }, 172 { "4.5555555555555555K", 4664, 0 }, 173 { "4.5555555555555555555K", 4664, 0 }, /* handle enough digits? */ 174 { "4.555555555555555555555555555555K", 4664, 0 }, /* ignores extra digits? */ 175 { "1G", 1073741824LL, 0 }, 176 { "G", 0, 0 }, /* should == 0G? */ 177 { "1234567890", 1234567890LL, 0 }, /* should work */ 178 { "1.5E", 1729382256910270464LL, 0 }, /* big */ 179 { "32948093840918378473209480483092", 0, ERANGE }, /* too big */ 180 { "1.5Q", 0, EINVAL }, /* invalid multiplier */ 181 { "1ab", 0, EINVAL }, /* ditto */ 182 { "3&", 0, EINVAL }, /* ditto */ 183 { "5.0e3", 0, EINVAL }, /* digits after */ 184 { "5.0E3", 0, EINVAL }, /* ditto */ 185 { "1..0", 0, EINVAL }, /* bad format */ 186 { "", 0, 0 }, /* boundary */ 187 { "--1", -1, EINVAL }, 188 { "++42", -1, EINVAL }, 189 { "SCALE_OVERFLOW", 0, ERANGE }, 190 { "SCALE_UNDERFLOW", 0, ERANGE }, 191 { "LLONG_MAX_K", (LLONG_MAX / 1024) * 1024, 0 }, 192 { "LLONG_MIN_K", (LLONG_MIN / 1024) * 1024, 0 }, 193 { "LLONG_MAX", LLONG_MAX, 0 }, /* upper limit */ 194 195 /* 196 * Lower limit is a bit special: because scan_scaled accumulates into a 197 * signed long long it can only handle up to the negative value of 198 * LLONG_MAX not LLONG_MIN. 199 */ 200 { "NEGATIVE_LLONG_MAX", LLONG_MAX*-1, 0 }, /* lower limit */ 201 { "LLONG_MIN", 0, ERANGE }, /* can't handle */ 202 #if LLONG_MAX == 0x7fffffffffffffffLL 203 { "-9223372036854775807", -9223372036854775807, 0 }, 204 { "9223372036854775807", 9223372036854775807, 0 }, 205 { "9223372036854775808", 0, ERANGE }, 206 { "9223372036854775809", 0, ERANGE }, 207 #endif 208 #if LLONG_MIN == (-0x7fffffffffffffffLL-1) 209 { "-9223372036854775808", 0, ERANGE }, 210 { "-9223372036854775809", 0, ERANGE }, 211 { "-9223372036854775810", 0, ERANGE }, 212 #endif 213 }; 214 # define SDATA_LENGTH (sizeof sdata/sizeof *sdata) 215 216 static void 217 print_errno(int e) 218 { 219 switch(e) { 220 case EINVAL: printf("EINVAL"); break; 221 case EDOM: printf("EDOM"); break; 222 case ERANGE: printf("ERANGE"); break; 223 default: printf("errno %d", e); 224 } 225 } 226 227 /** Print one result */ 228 static void 229 print(char *input, long long result, int ret, int e) 230 { 231 printf("\"%40s\" --> %lld (%d)", input, result, ret); 232 if (ret == -1) { 233 printf(" -- "); 234 print_errno(e); 235 } 236 printf("\n"); 237 } 238 239 static int 240 scan_test(void) 241 { 242 unsigned int i, errs = 0, e; 243 int ret; 244 long long result; 245 char buf[1024], *input; 246 247 for (i = 0; i < SDATA_LENGTH; i++) { 248 result = IMPROBABLE; 249 250 input = sdata[i].input; 251 /* some magic values for architecture dependent limits */ 252 if (strcmp(input, "LLONG_MAX") == 0) { 253 snprintf(buf, sizeof buf," %lld", LLONG_MAX); 254 input = buf; 255 } else if (strcmp(input, "LLONG_MIN") == 0) { 256 snprintf(buf, sizeof buf," %lld", LLONG_MIN); 257 input = buf; 258 } else if (strcmp(input, "LLONG_MAX_K") == 0) { 259 snprintf(buf, sizeof buf," %lldK", LLONG_MAX/1024); 260 input = buf; 261 } else if (strcmp(input, "LLONG_MIN_K") == 0) { 262 snprintf(buf, sizeof buf," %lldK", LLONG_MIN/1024); 263 input = buf; 264 } else if (strcmp(input, "SCALE_OVERFLOW") == 0) { 265 snprintf(buf, sizeof buf," %lldK", (LLONG_MAX/1024)+1); 266 input = buf; 267 } else if (strcmp(input, "SCALE_UNDERFLOW") == 0) { 268 snprintf(buf, sizeof buf," %lldK", (LLONG_MIN/1024)-1); 269 input = buf; 270 } else if (strcmp(input, "NEGATIVE_LLONG_MAX") == 0) { 271 snprintf(buf, sizeof buf," %lld", LLONG_MAX*-1); 272 input = buf; 273 } 274 if (verbose && input != sdata[i].input) 275 printf("expand '%s' -> '%s'\n", sdata[i].input, 276 input); 277 278 /* printf("Calling scan_scaled(%s, ...)\n", sdata[i].input); */ 279 errno = 0; 280 ret = scan_scaled(input, &result); 281 e = errno; /* protect across printfs &c. */ 282 if (verbose) 283 print(input, result, ret, e); 284 if (ret == -1) 285 errs += assert_int(i, 1, ret, sdata[i].err == 0 ? 0 : -1); 286 if (sdata[i].err) 287 errs += assert_errno(i, 2, sdata[i].err, e); 288 else 289 errs += assert_llong(i, 3, sdata[i].result, result); 290 } 291 return errs; 292 } 293 294 /************** common testing stuff *******************/ 295 296 static int 297 assert_int(int testnum, int check, int expect, int result) 298 { 299 if (expect == result) 300 return 0; 301 printf("** FAILURE: test %d check %d, expect %d, result %d **\n", 302 testnum, check, expect, result); 303 return 1; 304 } 305 306 static int 307 assert_errno(int testnum, int check, int expect, int result) 308 { 309 if (expect == result) 310 return 0; 311 printf("** FAILURE: test %d check %d, expect ", 312 testnum, check); 313 print_errno(expect); 314 printf(", got "); 315 print_errno(result); 316 printf(" **\n"); 317 return 1; 318 } 319 320 static int 321 assert_llong(int testnum, int check, long long expect, long long result) 322 { 323 if (expect == result) 324 return 0; 325 printf("** FAILURE: test %d check %d, expect %lld, result %lld **\n", 326 testnum, check, expect, result); 327 return 1; 328 } 329 330 static int 331 assert_str(int testnum, int check, char * expect, char * result) 332 { 333 if (strcmp(expect, result) == 0) 334 return 0; 335 printf("** FAILURE: test %d check %d, expect %s, result %s **\n", 336 testnum, check, expect, result); 337 return 1; 338 } 339