git.oblomov.eu Git - git/blob - t/helper/test-run-command.c

   1 /*
   2  * test-run-command.c: test run command API.
   3  *
   4  * (C) 2009 Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
   5  *
   6  * This code is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include "git-compat-util.h"
  12 #include "run-command.h"
  13 #include "argv-array.h"
  14 #include "strbuf.h"
  15 #include "gettext.h"
  16 #include "parse-options.h"
  17
  18 static int number_callbacks;
  19 static int parallel_next(struct child_process *cp,
  20                          struct strbuf *err,
  21                          void *cb,
  22                          void **task_cb)
  23 {
  24         struct child_process *d = cb;
  25         if (number_callbacks >= 4)
  26                 return 0;
  27
  28         argv_array_pushv(&cp->args, d->argv);
  29         strbuf_addstr(err, "preloaded output of a child\n");
  30         number_callbacks++;
  31         return 1;
  32 }
  33
  34 static int no_job(struct child_process *cp,
  35                   struct strbuf *err,
  36                   void *cb,
  37                   void **task_cb)
  38 {
  39         strbuf_addstr(err, "no further jobs available\n");
  40         return 0;
  41 }
  42
  43 static int task_finished(int result,
  44                          struct strbuf *err,
  45                          void *pp_cb,
  46                          void *pp_task_cb)
  47 {
  48         strbuf_addstr(err, "asking for a quick stop\n");
  49         return 1;
  50 }
  51
  52 static uint64_t my_random_next = 1234;
  53
  54 static uint64_t my_random(void)
  55 {
  56         uint64_t res = my_random_next;
  57         my_random_next = my_random_next * 1103515245 + 12345;
  58         return res;
  59 }
  60
  61 static int quote_stress_test(int argc, const char **argv)
  62 {
  63         /*
  64          * We are running a quote-stress test.
  65          * spawn a subprocess that runs quote-stress with a
  66          * special option that echoes back the arguments that
  67          * were passed in.
  68          */
  69         char special[] = ".?*\\^_\"'`{}()[]<>@~&+:;$%"; // \t\r\n\a";
  70         int i, j, k, trials = 100;
  71         struct strbuf out = STRBUF_INIT;
  72         struct argv_array args = ARGV_ARRAY_INIT;
  73         struct option options[] = {
  74                 OPT_INTEGER('n', "trials", &trials, "Number of trials"),
  75                 OPT_END()
  76         };
  77         const char * const usage[] = {
  78                 "test-run-command quote-stress-test <options>",
  79                 NULL
  80         };
  81
  82         argc = parse_options(argc, argv, NULL, options, usage, 0);
  83
  84         for (i = 0; i < trials; i++) {
  85                 struct child_process cp = CHILD_PROCESS_INIT;
  86                 size_t arg_count = 1 + (my_random() % 5), arg_offset;
  87                 int ret = 0;
  88
  89                 argv_array_clear(&args);
  90                 argv_array_pushl(&args, "test-run-command",
  91                                  "quote-echo", NULL);
  92                 arg_offset = args.argc;
  93                 for (j = 0; j < arg_count; j++) {
  94                         char buf[20];
  95                         size_t min_len = 1;
  96                         size_t arg_len = min_len +
  97                                 (my_random() % (ARRAY_SIZE(buf) - min_len));
  98
  99                         for (k = 0; k < arg_len; k++)
 100                                 buf[k] = special[my_random() %
 101                                         ARRAY_SIZE(special)];
 102                         buf[arg_len] = '\0';
 103
 104                         argv_array_push(&args, buf);
 105                 }
 106
 107                 cp.argv = args.argv;
 108                 strbuf_reset(&out);
 109                 if (pipe_command(&cp, NULL, 0, &out, 0, NULL, 0) < 0)
 110                         return error("Failed to spawn child process");
 111
 112                 for (j = 0, k = 0; j < arg_count; j++) {
 113                         const char *arg = args.argv[j + arg_offset];
 114
 115                         if (strcmp(arg, out.buf + k))
 116                                 ret = error("incorrectly quoted arg: '%s', "
 117                                             "echoed back as '%s'",
 118                                              arg, out.buf + k);
 119                         k += strlen(out.buf + k) + 1;
 120                 }
 121
 122                 if (k != out.len)
 123                         ret = error("got %d bytes, but consumed only %d",
 124                                      (int)out.len, (int)k);
 125
 126                 if (ret) {
 127                         fprintf(stderr, "Trial #%d failed. Arguments:\n", i);
 128                         for (j = 0; j < arg_count; j++)
 129                                 fprintf(stderr, "arg #%d: '%s'\n",
 130                                         (int)j, args.argv[j + arg_offset]);
 131
 132                         strbuf_release(&out);
 133                         argv_array_clear(&args);
 134
 135                         return ret;
 136                 }
 137
 138                 if (i && (i % 100) == 0)
 139                         fprintf(stderr, "Trials completed: %d\n", (int)i);
 140         }
 141
 142         strbuf_release(&out);
 143         argv_array_clear(&args);
 144
 145         return 0;
 146 }
 147
 148 static int quote_echo(int argc, const char **argv)
 149 {
 150         while (argc > 1) {
 151                 fwrite(argv[1], strlen(argv[1]), 1, stdout);
 152                 fputc('\0', stdout);
 153                 argv++;
 154                 argc--;
 155         }
 156
 157         return 0;
 158 }
 159
 160 int cmd_main(int argc, const char **argv)
 161 {
 162         struct child_process proc = CHILD_PROCESS_INIT;
 163         int jobs;
 164
 165         if (argc >= 2 && !strcmp(argv[1], "quote-stress-test"))
 166                 return !!quote_stress_test(argc - 1, argv + 1);
 167
 168         if (argc >= 2 && !strcmp(argv[1], "quote-echo"))
 169                 return !!quote_echo(argc - 1, argv + 1);
 170
 171         if (argc < 3)
 172                 return 1;
 173         proc.argv = (const char **)argv + 2;
 174
 175         if (!strcmp(argv[1], "start-command-ENOENT")) {
 176                 if (start_command(&proc) < 0 && errno == ENOENT)
 177                         return 0;
 178                 fprintf(stderr, "FAIL %s\n", argv[1]);
 179                 return 1;
 180         }
 181         if (!strcmp(argv[1], "run-command"))
 182                 exit(run_command(&proc));
 183
 184         jobs = atoi(argv[2]);
 185         proc.argv = (const char **)argv + 3;
 186
 187         if (!strcmp(argv[1], "run-command-parallel"))
 188                 exit(run_processes_parallel(jobs, parallel_next,
 189                                             NULL, NULL, &proc));
 190
 191         if (!strcmp(argv[1], "run-command-abort"))
 192                 exit(run_processes_parallel(jobs, parallel_next,
 193                                             NULL, task_finished, &proc));
 194
 195         if (!strcmp(argv[1], "run-command-no-jobs"))
 196                 exit(run_processes_parallel(jobs, no_job,
 197                                             NULL, task_finished, &proc));
 198
 199         fprintf(stderr, "check usage\n");
 200         return 1;
 201 }