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#include <allegro5/allegro.h>
#include "common.c"
static int error = 0;
#define SEP() \
log_printf("\n# line %d\n", __LINE__)
#define CHECK(_expr, _type, _expect) \
do { \
_type res = (_expr); \
if (res != (_expect)) { \
log_printf("FAIL %s\n", #_expr); \
error++; \
} else { \
log_printf("OK %s\n", #_expr); \
} \
} while (0)
static void read_test(void)
{
ALLEGRO_FILE *f;
uint8_t bs[8];
int32_t sz;
f = al_fopen("data/allegro.pcx", "rb");
if (!f) {
error++;
return;
}
/* Test: reading bytes advances position. */
SEP();
CHECK(al_ftell(f), int, 0);
CHECK(al_fgetc(f), int, 0xa);
CHECK(al_fgetc(f), int, 0x5);
CHECK(al_ftell(f), int64_t, 2);
/* Test: ungetc moves position back. */
SEP();
CHECK(al_fungetc(f, 0x55), bool, true);
CHECK(al_ftell(f), int64_t, 1);
/* Test: read buffer. */
SEP();
CHECK(al_fread(f, bs, sizeof(bs)), size_t, sizeof(bs));
CHECK(bs[0], uint8_t, 0x55); /* pushback */
CHECK(bs[1], uint8_t, 0x01);
CHECK(bs[2], uint8_t, 0x08);
CHECK(bs[3], uint8_t, 0x00);
CHECK(bs[4], uint8_t, 0x00);
CHECK(bs[5], uint8_t, 0x00);
CHECK(bs[6], uint8_t, 0x00);
CHECK(bs[7], uint8_t, 0x3f);
CHECK(al_ftell(f), int64_t, 9);
/* Test: seek absolute. */
SEP();
CHECK(al_fseek(f, 13, ALLEGRO_SEEK_SET), bool, true);
CHECK(al_ftell(f), int64_t, 13);
CHECK(al_fgetc(f), int, 0x02);
/* Test: seek nowhere. */
SEP();
CHECK(al_fseek(f, 0, ALLEGRO_SEEK_CUR), bool, true);
CHECK(al_ftell(f), int64_t, 14);
CHECK(al_fgetc(f), int, 0xe0);
/* Test: seek nowhere with pushback. */
SEP();
CHECK(al_fungetc(f, 0x55), bool, true);
CHECK(al_fseek(f, 0, ALLEGRO_SEEK_CUR), bool, true);
CHECK(al_ftell(f), int64_t, 14);
CHECK(al_fgetc(f), int, 0xe0);
/* Test: seek relative backwards. */
SEP();
CHECK(al_fseek(f, -3, ALLEGRO_SEEK_CUR), bool, true);
CHECK(al_ftell(f), int64_t, 12);
CHECK(al_fgetc(f), int, 0x80);
/* Test: seek backwards with pushback. */
SEP();
CHECK(al_ftell(f), int64_t, 13);
CHECK(al_fungetc(f, 0x66), bool, true);
CHECK(al_ftell(f), int64_t, 12);
CHECK(al_fseek(f, -2, ALLEGRO_SEEK_CUR), bool, true);
CHECK(al_ftell(f), int64_t, 10);
CHECK(al_fgetc(f), int, 0xc7);
/* Test: seek relative to end. */
SEP();
CHECK(al_fseek(f, 0, ALLEGRO_SEEK_END), bool, true);
CHECK(al_feof(f), bool, false);
CHECK(al_ftell(f), int64_t, 0xab06);
/* Test: read past EOF. */
SEP();
CHECK(al_fgetc(f), int, -1);
CHECK(al_feof(f), bool, true);
CHECK(al_ferror(f), int, 0);
/* Test: seek clears EOF indicator. */
SEP();
CHECK(al_fseek(f, 0, ALLEGRO_SEEK_END), bool, true);
CHECK(al_feof(f), bool, false);
CHECK(al_ftell(f), int64_t, 0xab06);
/* Test: seek backwards from end. */
SEP();
CHECK(al_fseek(f, -20, ALLEGRO_SEEK_END), bool, true);
CHECK(al_ftell(f), int64_t, 0xaaf2);
/* Test: seek forwards from end. */
SEP();
CHECK(al_fseek(f, 20, ALLEGRO_SEEK_END), bool, true);
CHECK(al_ftell(f), int64_t, 0xab1a);
CHECK(al_fgetc(f), int, -1);
CHECK(al_feof(f), bool, true);
/* Test: get file size if possible. */
SEP();
CHECK(sz = al_fsize(f), int64_t, sz);
if (sz != -1)
CHECK(sz, int64_t, 0xab06);
/* Test: close. */
SEP();
CHECK(al_fclose(f), bool, true);
}
int main(int argc, char *argv[])
{
(void)argc;
(void)argv;
if (!al_init())
return 1;
init_platform_specific();
open_log_monospace();
read_test();
close_log(true);
if (error) {
exit(EXIT_FAILURE);
}
return 0;
}
/* vim: set sts=3 sw=3 et: */
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