2 * testcode/replay.c - store and use a replay of events for the DNS resolver.
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
6 * This software is open source.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * Store and use a replay of events for the DNS resolver.
39 * Used to test known scenarios to get known outcomes.
43 /* for strtod prototype */
48 #include "util/net_help.h"
49 #include "util/config_file.h"
50 #include "testcode/replay.h"
51 #include "testcode/testpkts.h"
52 #include "testcode/fake_event.h"
53 #include "sldns/str2wire.h"
55 /** max length of lines in file */
56 #define MAX_LINE_LEN 10240
60 * @param store: value storage
61 * @param runtime: replay runtime for other stuff.
62 * @param text: the macro text, after the ${, Updated to after the } when
63 * done (successfully).
64 * @return expanded text, malloced. NULL on failure.
66 static char* macro_expand(rbtree_t* store,
67 struct replay_runtime* runtime, char** text);
69 /** compare of time values */
71 timeval_smaller(const struct timeval* x, const struct timeval* y)
74 if(x->tv_sec < y->tv_sec)
76 else if(x->tv_sec == y->tv_sec) {
77 if(x->tv_usec <= y->tv_usec)
85 /** parse keyword in string.
86 * @param line: if found, the line is advanced to after the keyword.
87 * @param keyword: string.
88 * @return: true if found, false if not.
91 parse_keyword(char** line, const char* keyword)
93 size_t len = (size_t)strlen(keyword);
94 if(strncmp(*line, keyword, len) == 0) {
103 replay_moment_delete(struct replay_moment* mom)
108 delete_entry(mom->match);
110 free(mom->autotrust_id);
113 config_delstrlist(mom->file_content);
119 replay_range_delete(struct replay_range* rng)
123 delete_entry(rng->match);
127 /** strip whitespace from end of string */
129 strip_end_white(char* p)
132 for(i = strlen(p); i > 0; i--) {
133 if(isspace((unsigned char)p[i-1]))
140 * Read a range from file.
141 * @param remain: Rest of line (after RANGE keyword).
142 * @param in: file to read from.
143 * @param name: name to print in errors.
144 * @param pstate: read state structure with
145 * with lineno : incremented as lines are read.
146 * ttl, origin, prev for readentry.
147 * @param line: line buffer.
148 * @return: range object to add to list, or NULL on error.
150 static struct replay_range*
151 replay_range_read(char* remain, FILE* in, const char* name,
152 struct sldns_file_parse_state* pstate, char* line)
154 struct replay_range* rng = (struct replay_range*)malloc(
155 sizeof(struct replay_range));
158 struct entry* entry, *last = NULL;
161 memset(rng, 0, sizeof(*rng));
162 /* read time range */
163 if(sscanf(remain, " %d %d", &rng->start_step, &rng->end_step)!=2) {
164 log_err("Could not read time range: %s", line);
170 while(fgets(line, MAX_LINE_LEN-1, in)) {
173 while(isspace((unsigned char)*parse))
175 if(!*parse || *parse == ';') {
179 if(parse_keyword(&parse, "ADDRESS")) {
180 while(isspace((unsigned char)*parse))
182 strip_end_white(parse);
183 if(!extstrtoaddr(parse, &rng->addr, &rng->addrlen)) {
184 log_err("Line %d: could not read ADDRESS: %s",
185 pstate->lineno, parse);
192 if(parse_keyword(&parse, "RANGE_END")) {
195 /* set position before line; read entry */
197 fseeko(in, pos, SEEK_SET);
198 entry = read_entry(in, name, pstate, 1);
200 fatal_exit("%d: bad entry", pstate->lineno);
204 else rng->match = entry;
209 replay_range_delete(rng);
213 /** Read FILE match content */
215 read_file_content(FILE* in, int* lineno, struct replay_moment* mom)
217 char line[MAX_LINE_LEN];
219 struct config_strlist** last = &mom->file_content;
220 line[MAX_LINE_LEN-1]=0;
221 if(!fgets(line, MAX_LINE_LEN-1, in))
222 fatal_exit("FILE_BEGIN expected at line %d", *lineno);
223 if(!parse_keyword(&remain, "FILE_BEGIN"))
224 fatal_exit("FILE_BEGIN expected at line %d", *lineno);
225 while(fgets(line, MAX_LINE_LEN-1, in)) {
227 if(strncmp(line, "FILE_END", 8) == 0) {
230 if(line[0]) line[strlen(line)-1] = 0; /* remove newline */
231 if(!cfg_strlist_insert(last, strdup(line)))
232 fatal_exit("malloc failure");
233 last = &( (*last)->next );
235 fatal_exit("no FILE_END in input file");
238 /** read assign step info */
240 read_assign_step(char* remain, struct replay_moment* mom)
245 buf[sizeof(buf)-1]=0;
246 if(sscanf(remain, " %1023s %c %n", buf, &eq, &skip) != 2)
247 fatal_exit("cannot parse assign: %s", remain);
248 mom->variable = strdup(buf);
250 fatal_exit("no '=' in assign: %s", remain);
252 if(remain[0]) remain[strlen(remain)-1]=0; /* remove newline */
253 mom->string = strdup(remain);
254 if(!mom->variable || !mom->string)
255 fatal_exit("out of memory");
259 * Read a replay moment 'STEP' from file.
260 * @param remain: Rest of line (after STEP keyword).
261 * @param in: file to read from.
262 * @param name: name to print in errors.
263 * @param pstate: with lineno, ttl, origin, prev for parse state.
264 * lineno is incremented.
265 * @return: range object to add to list, or NULL on error.
267 static struct replay_moment*
268 replay_moment_read(char* remain, FILE* in, const char* name,
269 struct sldns_file_parse_state* pstate)
271 struct replay_moment* mom = (struct replay_moment*)malloc(
272 sizeof(struct replay_moment));
277 memset(mom, 0, sizeof(*mom));
278 if(sscanf(remain, " %d%n", &mom->time_step, &skip) != 1) {
279 log_err("%d: cannot read number: %s", pstate->lineno, remain);
284 while(isspace((unsigned char)*remain))
286 if(parse_keyword(&remain, "NOTHING")) {
287 mom->evt_type = repevt_nothing;
288 } else if(parse_keyword(&remain, "QUERY")) {
289 mom->evt_type = repevt_front_query;
291 if(!extstrtoaddr("127.0.0.1", &mom->addr, &mom->addrlen))
292 fatal_exit("internal error");
293 } else if(parse_keyword(&remain, "CHECK_ANSWER")) {
294 mom->evt_type = repevt_front_reply;
296 } else if(parse_keyword(&remain, "CHECK_OUT_QUERY")) {
297 mom->evt_type = repevt_back_query;
299 } else if(parse_keyword(&remain, "REPLY")) {
300 mom->evt_type = repevt_back_reply;
302 } else if(parse_keyword(&remain, "TIMEOUT")) {
303 mom->evt_type = repevt_timeout;
304 } else if(parse_keyword(&remain, "TIME_PASSES")) {
305 mom->evt_type = repevt_time_passes;
306 while(isspace((unsigned char)*remain))
308 if(parse_keyword(&remain, "EVAL")) {
309 while(isspace((unsigned char)*remain))
311 mom->string = strdup(remain);
312 if(!mom->string) fatal_exit("out of memory");
313 if(strlen(mom->string)>0)
314 mom->string[strlen(mom->string)-1]=0;
315 remain += strlen(mom->string);
317 } else if(parse_keyword(&remain, "CHECK_AUTOTRUST")) {
318 mom->evt_type = repevt_autotrust_check;
319 while(isspace((unsigned char)*remain))
321 if(strlen(remain)>0 && remain[strlen(remain)-1]=='\n')
322 remain[strlen(remain)-1] = 0;
323 mom->autotrust_id = strdup(remain);
324 if(!mom->autotrust_id) fatal_exit("out of memory");
325 read_file_content(in, &pstate->lineno, mom);
326 } else if(parse_keyword(&remain, "ERROR")) {
327 mom->evt_type = repevt_error;
328 } else if(parse_keyword(&remain, "TRAFFIC")) {
329 mom->evt_type = repevt_traffic;
330 } else if(parse_keyword(&remain, "ASSIGN")) {
331 mom->evt_type = repevt_assign;
332 read_assign_step(remain, mom);
333 } else if(parse_keyword(&remain, "INFRA_RTT")) {
335 mom->evt_type = repevt_infra_rtt;
336 while(isspace((unsigned char)*remain))
339 remain = strchr(s, ' ');
340 if(!remain) fatal_exit("expected three args for INFRA_RTT");
343 while(isspace((unsigned char)*remain))
345 m = strchr(remain, ' ');
346 if(!m) fatal_exit("expected three args for INFRA_RTT");
349 while(isspace((unsigned char)*m))
351 if(!extstrtoaddr(s, &mom->addr, &mom->addrlen))
352 fatal_exit("bad infra_rtt address %s", s);
353 if(strlen(m)>0 && m[strlen(m)-1]=='\n')
355 mom->variable = strdup(remain);
356 mom->string = strdup(m);
357 if(!mom->string) fatal_exit("out of memory");
358 if(!mom->variable) fatal_exit("out of memory");
360 log_err("%d: unknown event type %s", pstate->lineno, remain);
364 while(isspace((unsigned char)*remain))
366 if(parse_keyword(&remain, "ADDRESS")) {
367 while(isspace((unsigned char)*remain))
369 if(strlen(remain) > 0) /* remove \n */
370 remain[strlen(remain)-1] = 0;
371 if(!extstrtoaddr(remain, &mom->addr, &mom->addrlen)) {
372 log_err("line %d: could not parse ADDRESS: %s",
373 pstate->lineno, remain);
378 if(parse_keyword(&remain, "ELAPSE")) {
381 sec = strtod(remain, &remain);
382 if(sec == 0. && errno != 0) {
383 log_err("line %d: could not parse ELAPSE: %s (%s)",
384 pstate->lineno, remain, strerror(errno));
389 mom->elapse.tv_sec = (int)sec;
390 mom->elapse.tv_usec = (int)((sec - (double)mom->elapse.tv_sec)
396 mom->match = read_entry(in, name, pstate, 1);
406 /** makes scenario with title on rest of line */
407 static struct replay_scenario*
408 make_scenario(char* line)
410 struct replay_scenario* scen;
411 while(isspace((unsigned char)*line))
414 log_err("scenario: no title given");
417 scen = (struct replay_scenario*)malloc(sizeof(struct replay_scenario));
420 memset(scen, 0, sizeof(*scen));
421 scen->title = strdup(line);
429 struct replay_scenario*
430 replay_scenario_read(FILE* in, const char* name, int* lineno)
432 char line[MAX_LINE_LEN];
434 struct replay_scenario* scen = NULL;
435 struct sldns_file_parse_state pstate;
436 line[MAX_LINE_LEN-1]=0;
437 memset(&pstate, 0, sizeof(pstate));
438 pstate.default_ttl = 3600;
439 pstate.lineno = *lineno;
441 while(fgets(line, MAX_LINE_LEN-1, in)) {
445 while(isspace((unsigned char)*parse))
448 continue; /* empty line */
449 if(parse_keyword(&parse, ";"))
450 continue; /* comment */
451 if(parse_keyword(&parse, "SCENARIO_BEGIN")) {
452 scen = make_scenario(parse);
454 fatal_exit("%d: could not make scen", *lineno);
458 fatal_exit("%d: expected SCENARIO", *lineno);
459 if(parse_keyword(&parse, "RANGE_BEGIN")) {
460 struct replay_range* newr = replay_range_read(parse,
461 in, name, &pstate, line);
463 fatal_exit("%d: bad range", pstate.lineno);
464 *lineno = pstate.lineno;
465 newr->next_range = scen->range_list;
466 scen->range_list = newr;
467 } else if(parse_keyword(&parse, "STEP")) {
468 struct replay_moment* mom = replay_moment_read(parse,
471 fatal_exit("%d: bad moment", pstate.lineno);
472 *lineno = pstate.lineno;
474 scen->mom_last->time_step >= mom->time_step)
475 fatal_exit("%d: time goes backwards", *lineno);
477 scen->mom_last->mom_next = mom;
478 else scen->mom_first = mom;
479 scen->mom_last = mom;
480 } else if(parse_keyword(&parse, "SCENARIO_END")) {
481 struct replay_moment *p = scen->mom_first;
487 log_info("Scenario has %d steps", num);
491 replay_scenario_delete(scen);
496 replay_scenario_delete(struct replay_scenario* scen)
498 struct replay_moment* mom, *momn;
499 struct replay_range* rng, *rngn;
504 mom = scen->mom_first;
506 momn = mom->mom_next;
507 replay_moment_delete(mom);
510 rng = scen->range_list;
512 rngn = rng->next_range;
513 replay_range_delete(rng);
519 /** fetch oldest timer in list that is enabled */
520 static struct fake_timer*
521 first_timer(struct replay_runtime* runtime)
523 struct fake_timer* p, *res = NULL;
524 for(p=runtime->timer_list; p; p=p->next) {
529 else if(timeval_smaller(&p->tv, &res->tv))
536 replay_get_oldest_timer(struct replay_runtime* runtime)
538 struct fake_timer* t = first_timer(runtime);
539 if(t && timeval_smaller(&t->tv, &runtime->now_tv))
545 replay_var_compare(const void* a, const void* b)
547 struct replay_var* x = (struct replay_var*)a;
548 struct replay_var* y = (struct replay_var*)b;
549 return strcmp(x->name, y->name);
553 macro_store_create(void)
555 return rbtree_create(&replay_var_compare);
558 /** helper function to delete macro values */
560 del_macro(rbnode_t* x, void* ATTR_UNUSED(arg))
562 struct replay_var* v = (struct replay_var*)x;
569 macro_store_delete(rbtree_t* store)
573 traverse_postorder(store, del_macro, NULL);
577 /** return length of macro */
579 macro_length(char* text)
581 /* we are after ${, looking for } */
590 } else if(text[0] == '$' && text[1] == '{') {
598 /** insert new stuff at start of buffer */
600 do_buf_insert(char* buf, size_t remain, char* after, char* inserted)
602 char* save = strdup(after);
605 if(strlen(inserted) > remain) {
609 len = strlcpy(buf, inserted, remain);
612 (void)strlcpy(buf, save, remain);
617 /** do macro recursion */
619 do_macro_recursion(rbtree_t* store, struct replay_runtime* runtime,
620 char* at, size_t remain)
623 char* expand = macro_expand(store, runtime, &after);
625 return NULL; /* expansion failed */
626 if(!do_buf_insert(at, remain, after, expand)) {
631 return at; /* and parse over the expanded text to see if again */
634 /** get var from store */
635 static struct replay_var*
636 macro_getvar(rbtree_t* store, char* name)
641 return (struct replay_var*)rbtree_search(store, &k);
644 /** do macro variable */
646 do_macro_variable(rbtree_t* store, char* buf, size_t remain)
648 struct replay_var* v;
653 return NULL; /* no variable name after $ */
654 while(*at && (isalnum((unsigned char)*at) || *at=='_')) {
657 /* terminator, we are working in macro_expand() buffer */
660 v = macro_getvar(store, name);
664 log_err("variable is not defined: $%s", name);
665 return NULL; /* variable undefined is error for now */
668 /* insert the variable contents */
669 if(!do_buf_insert(buf, remain, at, v->value))
671 return buf; /* and expand the variable contents */
674 /** do ctime macro on argument */
676 do_macro_ctime(char* arg)
679 time_t tt = (time_t)atoi(arg);
680 if(tt == 0 && strcmp(arg, "0") != 0) {
681 log_err("macro ctime: expected number, not: %s", arg);
685 if(buf[0]) buf[strlen(buf)-1]=0; /* remove trailing newline */
689 /** perform arithmetic operator */
691 perform_arith(double x, char op, double y, double* res)
713 /** do macro arithmetic on two numbers and operand */
715 do_macro_arith(char* orig, size_t remain, char** arithstart)
722 /* not yet done? we want number operand number expanded first. */
724 /* remember start pos of expr, skip the first number */
727 while(*at && (isdigit((unsigned char)*at) || *at == '.'))
731 /* move back to start */
732 remain += (size_t)(orig - *arithstart);
736 if(sscanf(at, " %lf %c %lf%n", &x, &operator, &y, &skip) != 3) {
738 return do_macro_arith(orig, remain, arithstart);
740 if(isdigit((unsigned char)operator)) {
742 return at+skip; /* do nothing, but setup for later number */
745 /* calculate result */
746 if(!perform_arith(x, operator, y, &result)) {
747 log_err("unknown operator: %s", at);
751 /* put result back in buffer */
752 snprintf(buf, sizeof(buf), "%.12g", result);
753 if(!do_buf_insert(at, remain, at+skip, buf))
756 /* the result can be part of another expression, restart that */
761 /** Do range macro on expanded buffer */
763 do_macro_range(char* buf)
766 if(sscanf(buf, " %lf %lf %lf", &x, &y, &z) != 3) {
767 log_err("range func requires 3 args: %s", buf);
770 if(x <= y && y <= z) {
772 snprintf(res, sizeof(res), "%.24g", y);
775 fatal_exit("value %.24g not in range [%.24g, %.24g]", y, x, z);
780 macro_expand(rbtree_t* store, struct replay_runtime* runtime, char** text)
784 size_t len = macro_length(at);
786 char* arithstart = NULL;
787 if(len >= sizeof(buf))
788 return NULL; /* too long */
790 (void)strlcpy(buf, at, len+1-1); /* do not copy last '}' character */
793 /* check for functions */
794 if(strcmp(buf, "time") == 0) {
795 snprintf(buf, sizeof(buf), ARG_LL "d", (long long)runtime->now_secs);
798 } else if(strcmp(buf, "timeout") == 0) {
800 struct fake_timer* t = first_timer(runtime);
801 if(t && (time_t)t->tv.tv_sec >= runtime->now_secs)
802 res = (time_t)t->tv.tv_sec - runtime->now_secs;
803 snprintf(buf, sizeof(buf), ARG_LL "d", (long long)res);
806 } else if(strncmp(buf, "ctime ", 6) == 0 ||
807 strncmp(buf, "ctime\t", 6) == 0) {
810 } else if(strncmp(buf, "range ", 6) == 0 ||
811 strncmp(buf, "range\t", 6) == 0) {
816 /* actual macro text expansion */
818 size_t remain = sizeof(buf)-strlen(buf);
819 if(strncmp(at, "${", 2) == 0) {
820 at = do_macro_recursion(store, runtime, at, remain);
821 } else if(*at == '$') {
822 at = do_macro_variable(store, at, remain);
823 } else if(isdigit((unsigned char)*at)) {
824 at = do_macro_arith(at, remain, &arithstart);
826 /* copy until whitespace or operator */
827 if(*at && (isalnum((unsigned char)*at) || *at=='_')) {
829 while(*at && (isalnum((unsigned char)*at) || *at=='_'))
833 if(!at) return NULL; /* failure */
837 /* post process functions, buf has the argument(s) */
838 if(strncmp(buf, "ctime", 5) == 0) {
839 return do_macro_ctime(buf+6);
840 } else if(strncmp(buf, "range", 5) == 0) {
841 return do_macro_range(buf+6);
848 macro_process(rbtree_t* store, struct replay_runtime* runtime, char* text)
853 if(!strstr(text, "${"))
854 return strdup(text); /* no macros */
856 buf[sizeof(buf)-1]=0;
857 while( (next=strstr(at, "${")) ) {
858 /* copy text before next macro */
859 if((size_t)(next-at) >= sizeof(buf)-strlen(buf))
860 return NULL; /* string too long */
861 (void)strlcpy(buf+strlen(buf), at, (size_t)(next-at+1));
862 /* process the macro itself */
864 expand = macro_expand(store, runtime, &next);
865 if(!expand) return NULL; /* expansion failed */
866 (void)strlcpy(buf+strlen(buf), expand, sizeof(buf)-strlen(buf));
870 /* copy remainder fixed text */
871 (void)strlcpy(buf+strlen(buf), at, sizeof(buf)-strlen(buf));
876 macro_lookup(rbtree_t* store, char* name)
878 struct replay_var* x = macro_getvar(store, name);
879 if(!x) return strdup("");
880 return strdup(x->value);
883 void macro_print_debug(rbtree_t* store)
885 struct replay_var* x;
886 RBTREE_FOR(x, struct replay_var*, store) {
887 log_info("%s = %s", x->name, x->value);
892 macro_assign(rbtree_t* store, char* name, char* value)
894 struct replay_var* x = macro_getvar(store, name);
898 x = (struct replay_var*)malloc(sizeof(*x));
901 x->name = strdup(name);
906 (void)rbtree_insert(store, &x->node);
908 x->value = strdup(value);
909 return x->value != NULL;
912 /* testbound assert function for selftest. counts the number of tests */
913 #define tb_assert(x) \
914 do { if(!(x)) fatal_exit("%s:%d: %s: assertion %s failed", \
915 __FILE__, __LINE__, __func__, #x); \
919 void testbound_selftest(void)
921 /* test the macro store */
922 rbtree_t* store = macro_store_create();
928 v = macro_lookup(store, "bla");
929 tb_assert(strcmp(v, "") == 0);
932 v = macro_lookup(store, "vlerk");
933 tb_assert(strcmp(v, "") == 0);
936 r = macro_assign(store, "bla", "waarde1");
939 v = macro_lookup(store, "vlerk");
940 tb_assert(strcmp(v, "") == 0);
943 v = macro_lookup(store, "bla");
944 tb_assert(strcmp(v, "waarde1") == 0);
947 r = macro_assign(store, "vlerk", "kanteel");
950 v = macro_lookup(store, "bla");
951 tb_assert(strcmp(v, "waarde1") == 0);
954 v = macro_lookup(store, "vlerk");
955 tb_assert(strcmp(v, "kanteel") == 0);
958 r = macro_assign(store, "bla", "ww");
961 v = macro_lookup(store, "bla");
962 tb_assert(strcmp(v, "ww") == 0);
965 tb_assert( macro_length("}") == 1);
966 tb_assert( macro_length("blabla}") == 7);
967 tb_assert( macro_length("bla${zoink}bla}") == 7+8);
968 tb_assert( macro_length("bla${zoink}${bla}bla}") == 7+8+6);
970 v = macro_process(store, NULL, "");
971 tb_assert( v && strcmp(v, "") == 0);
974 v = macro_process(store, NULL, "${}");
975 tb_assert( v && strcmp(v, "") == 0);
978 v = macro_process(store, NULL, "blabla ${} dinges");
979 tb_assert( v && strcmp(v, "blabla dinges") == 0);
982 v = macro_process(store, NULL, "1${$bla}2${$bla}3");
983 tb_assert( v && strcmp(v, "1ww2ww3") == 0);
986 v = macro_process(store, NULL, "it is ${ctime 123456}");
987 tb_assert( v && strcmp(v, "it is Fri Jan 2 10:17:36 1970") == 0);
990 r = macro_assign(store, "t1", "123456");
992 v = macro_process(store, NULL, "it is ${ctime ${$t1}}");
993 tb_assert( v && strcmp(v, "it is Fri Jan 2 10:17:36 1970") == 0);
996 v = macro_process(store, NULL, "it is ${ctime $t1}");
997 tb_assert( v && strcmp(v, "it is Fri Jan 2 10:17:36 1970") == 0);
1000 r = macro_assign(store, "x", "1");
1002 r = macro_assign(store, "y", "2");
1004 v = macro_process(store, NULL, "${$x + $x}");
1005 tb_assert( v && strcmp(v, "2") == 0);
1007 v = macro_process(store, NULL, "${$x - $x}");
1008 tb_assert( v && strcmp(v, "0") == 0);
1010 v = macro_process(store, NULL, "${$y * $y}");
1011 tb_assert( v && strcmp(v, "4") == 0);
1013 v = macro_process(store, NULL, "${32 / $y + $x + $y}");
1014 tb_assert( v && strcmp(v, "19") == 0);
1017 v = macro_process(store, NULL, "${32 / ${$y+$y} + ${${100*3}/3}}");
1018 tb_assert( v && strcmp(v, "108") == 0);
1021 v = macro_process(store, NULL, "${1 2 33 2 1}");
1022 tb_assert( v && strcmp(v, "1 2 33 2 1") == 0);
1025 v = macro_process(store, NULL, "${123 3 + 5}");
1026 tb_assert( v && strcmp(v, "123 8") == 0);
1029 v = macro_process(store, NULL, "${123 glug 3 + 5}");
1030 tb_assert( v && strcmp(v, "123 glug 8") == 0);
1033 macro_store_delete(store);
1034 printf("selftest successful (%d checks).\n", num_asserts);