git.scottworley.com Git - tl-append/blob - tl-append-test.c

   1 #define _POSIX_C_SOURCE 2
   2 #define _XOPEN_SOURCE
   3 #include <assert.h>
   4 #include <ctype.h>
   5 #include <errno.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <time.h>
  10
  11 #include "common.h"
  12
  13 typedef struct expectation {
  14   time_t a, b;
  15   const char *message;
  16 } ex_t;
  17
  18 const ex_t END = {((time_t)-1), ((time_t)-1), NULL};
  19 static int is_end(ex_t exp) {
  20   return exp.a == END.a && exp.b == END.b && exp.message == END.message;
  21 }
  22 static ex_t expectation(time_t a, time_t b, const char *message) {
  23   ex_t exp;
  24   exp.a = a;
  25   exp.b = b;
  26   exp.message = message;
  27   return exp;
  28 }
  29
  30 static void remove_logfile() {
  31   if (remove(FILENAME) != 0) {
  32     if (errno != ENOENT) {
  33       die_err("Error removing log file");
  34     }
  35   }
  36 }
  37
  38 static ex_t write_to_tl_append(const char *content) {
  39   FILE *p = popen("./tl-append", "w");
  40   if (p == NULL)
  41     die_err("Couldn't run tl-append");
  42   time_t start = time(NULL);
  43   if (fputs(content, p) == EOF)
  44     die("Couldn't write to pipe");
  45   int status = pclose(p);
  46   time_t end = time(NULL);
  47   if (status < 0)
  48     die_err("Error closing pipe");
  49   if (status != 0)
  50     die("tl-append exited abnormally");
  51   return expectation(start, end, content);
  52 }
  53
  54 static void verify_line(const ex_t *ex, const char *line) {
  55   if (strncmp(ex->message, line, strlen(ex->message) + 1) != 0)
  56     die("Wrong contents in log file");
  57 }
  58
  59 static void verify_log_contents(ex_t exps[]) {
  60
  61   FILE *f = fopen(FILENAME, "r");
  62   if (f == NULL)
  63     die_err("Error opening log file");
  64   for (size_t i = 0; !is_end(exps[i]); i++) {
  65     size_t len = strlen(exps[i].message);
  66     char *buf = (char *)malloc(len + 2);
  67     if (fgets(buf, len + 1, f) == NULL)
  68       die("Error reading log file");
  69     if (ferror(f))
  70       die("Error reading log file");
  71     verify_line(&exps[i], buf);
  72     free(buf);
  73   }
  74   if (fclose(f) != 0)
  75     die_err("Error closing log file");
  76 }
  77
  78 static void test_encode_time() {
  79   /* localtime_r to set tm's timezone */
  80   time_t now_time = time(NULL);
  81   struct tm tm;
  82   if (localtime_r(&now_time, &tm) == NULL)
  83     die_err("Can't unpack current time?");
  84
  85   const char *strptime_result = strptime("2011-12-13 14:15:16", "%F %T", &tm);
  86   if (strptime_result == NULL || *strptime_result != '\0')
  87     die("Couldn't parse time?");
  88   time_t tt = mktime(&tm);
  89   if (tt == (time_t)-1)
  90     die_err("Can't pack time?");
  91
  92   const char *encoded = encode_time(tt);
  93   /* Loose check to allow for daylight savings time changes between the current
  94    * time and the target time.  :( */
  95   assert(encoded[0] == '2');
  96   assert(encoded[1] == '0');
  97   assert(encoded[2] == '1');
  98   assert(encoded[3] == '1');
  99   assert(encoded[4] == ' ');
 100   assert(encoded[5] == '1');
 101   assert(encoded[6] == '2');
 102   assert(encoded[7] == ' ');
 103   assert(encoded[8] == '1');
 104   assert(encoded[9] == '3');
 105   assert(encoded[10] == ' ');
 106   assert(encoded[11] == '1');
 107   assert(isdigit(encoded[12]));
 108   assert(encoded[13] == ' ');
 109   assert(isdigit(encoded[14]));
 110   assert(isdigit(encoded[15]));
 111   assert(encoded[16] == ' ');
 112   assert(encoded[17] == '1');
 113   assert(encoded[18] == '6');
 114   assert(encoded[19] == '\0');
 115 }
 116
 117 static void write_and_read_line() {
 118   remove_logfile();
 119   ex_t e = write_to_tl_append("foo\n");
 120   verify_log_contents((ex_t[]){e, END});
 121 }
 122
 123 static void write_and_read_two_lines() {
 124   remove_logfile();
 125   ex_t e1 = write_to_tl_append("foo\n");
 126   ex_t e2 = write_to_tl_append("bar\n");
 127   verify_log_contents((ex_t[]){e1, e2, END});
 128 }
 129
 130 int main() {
 131   test_encode_time();
 132   write_and_read_line();
 133   write_and_read_two_lines();
 134 }