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[tl-append] / 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 const size_t TIMESTAMP_LEN = 19;
14
15 typedef struct expectation {
16 time_t a, b;
17 const char *message;
18 } ex_t;
19
20 const ex_t END = {((time_t)-1), ((time_t)-1), NULL};
21 static int is_end(ex_t exp) {
22 return exp.a == END.a && exp.b == END.b && exp.message == END.message;
23 }
24 static ex_t expectation(time_t a, time_t b, const char *message) {
25 ex_t exp;
26 exp.a = a;
27 exp.b = b;
28 exp.message = message;
29 return exp;
30 }
31
32 static void remove_logfile() {
33 if (remove(FILENAME) != 0) {
34 if (errno != ENOENT) {
35 die_err("Error removing log file");
36 }
37 }
38 }
39
40 static ex_t write_to_tl_append(const char *content) {
41 FILE *p = popen("./tl-append", "w");
42 if (p == NULL)
43 die_err("Couldn't run tl-append");
44 time_t start = time(NULL);
45 if (fputs(content, p) == EOF)
46 die("Couldn't write to pipe");
47 int status = pclose(p);
48 time_t end = time(NULL);
49 if (status < 0)
50 die_err("Error closing pipe");
51 if (status != 0)
52 die("tl-append exited abnormally");
53 return expectation(start, end, content);
54 }
55
56 static void verify_timestamp(const ex_t *ex, const char *line) {
57 struct tm tm;
58
59 /* localtime_r to set tm's timezone */
60 time_t now_time = time(NULL);
61 if (localtime_r(&now_time, &tm) == NULL)
62 die_err("Can't unpack current time?");
63
64 const char *strptime_result = strptime(line, "%Y %m %d %H %M %S", &tm);
65 if (strptime_result == NULL || strptime_result != &line[TIMESTAMP_LEN])
66 die("Wrong contents in log file: Couldn't parse timestamp");
67 time_t t = mktime(&tm);
68 int t_in_range = ex->a <= t && t <= ex->b;
69 if (!t_in_range)
70 die("Wrong contents in log file: Wrong time");
71 }
72
73 static void verify_line(const ex_t *ex, const char *line) {
74 size_t line_len = strlen(line);
75 if (line_len < TIMESTAMP_LEN + 1)
76 die("Wrong contents in log file: Line too short");
77 verify_timestamp(ex, line);
78 if (line[TIMESTAMP_LEN] != ' ')
79 die("Wrong contents in log file: Bad format");
80 if (strncmp(ex->message, &line[TIMESTAMP_LEN + 1], strlen(ex->message) + 1) !=
81 0)
82 die("Wrong contents in log file");
83 }
84
85 static void verify_log_contents(ex_t exps[]) {
86
87 FILE *f = fopen(FILENAME, "r");
88 if (f == NULL)
89 die_err("Error opening log file");
90 for (size_t i = 0; !is_end(exps[i]); i++) {
91 size_t len = TIMESTAMP_LEN + 1 + strlen(exps[i].message);
92 char *buf = (char *)malloc(len + 2);
93 if (fgets(buf, len + 1, f) == NULL)
94 die("Error reading log file");
95 if (ferror(f))
96 die("Error reading log file");
97 verify_line(&exps[i], buf);
98 free(buf);
99 }
100 if (fclose(f) != 0)
101 die_err("Error closing log file");
102 }
103
104 static void test_encode_time() {
105 /* localtime_r to set tm's timezone */
106 time_t now_time = time(NULL);
107 struct tm tm;
108 if (localtime_r(&now_time, &tm) == NULL)
109 die_err("Can't unpack current time?");
110
111 const char *strptime_result = strptime("2011-12-13 14:15:16", "%F %T", &tm);
112 if (strptime_result == NULL || *strptime_result != '\0')
113 die("Couldn't parse time?");
114 time_t tt = mktime(&tm);
115 if (tt == (time_t)-1)
116 die_err("Can't pack time?");
117
118 const char *encoded = encode_time(tt);
119 /* Loose check to allow for daylight savings time changes between the current
120 * time and the target time. :( */
121 assert(encoded[0] == '2');
122 assert(encoded[1] == '0');
123 assert(encoded[2] == '1');
124 assert(encoded[3] == '1');
125 assert(encoded[4] == ' ');
126 assert(encoded[5] == '1');
127 assert(encoded[6] == '2');
128 assert(encoded[7] == ' ');
129 assert(encoded[8] == '1');
130 assert(encoded[9] == '3');
131 assert(encoded[10] == ' ');
132 assert(encoded[11] == '1');
133 assert(isdigit(encoded[12]));
134 assert(encoded[13] == ' ');
135 assert(isdigit(encoded[14]));
136 assert(isdigit(encoded[15]));
137 assert(encoded[16] == ' ');
138 assert(encoded[17] == '1');
139 assert(encoded[18] == '6');
140 assert(encoded[19] == '\0');
141 }
142
143 static void write_and_read_line() {
144 remove_logfile();
145 ex_t e = write_to_tl_append("foo\n");
146 verify_log_contents((ex_t[]){e, END});
147 }
148
149 static void write_and_read_two_lines() {
150 remove_logfile();
151 ex_t e1 = write_to_tl_append("foo\n");
152 ex_t e2 = write_to_tl_append("bar\n");
153 verify_log_contents((ex_t[]){e1, e2, END});
154 }
155
156 int main() {
157 test_encode_time();
158 write_and_read_line();
159 write_and_read_two_lines();
160 }