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#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Include the implementation to inspect snapshot arena accounting. Link
* against the static library so snapshot.c is compiled only here. */
#include "../src/snapshot.c"
static int fail_realloc;
static int fail_resize_calloc;
void *__real_realloc(void *, size_t);
void *__real_calloc(size_t, size_t);
void *__wrap_calloc(size_t n, size_t size)
{
if (fail_resize_calloc && n == 2 && size == sizeof(struct srow)) {
fail_resize_calloc = 0;
return NULL;
}
return __real_calloc(n, size);
}
void *__wrap_realloc(void *ptr, size_t size)
{
if (fail_realloc) { fail_realloc = 0; return NULL; }
return __real_realloc(ptr, size);
}
int main(void)
{
struct term_options options = { .size = { 8, 3 }, .scrollback = 5 };
struct term *t = term_new(&options);
struct term_snapshot *s = term_snapshot_new();
assert(t && s && term_snapshot_update(s, t));
const char accented[] = "e\xcc\x81";
term_feed(t, accented, sizeof(accented) - 1, 0);
fail_realloc = 1;
bool ok = term_snapshot_update(s, t);
uint32_t cps[16];
int n = term_snapshot_cluster(s, term_snapshot_row(s, 0)[0].text, cps, 16);
printf("snapshot arena allocation failure: update=%d cluster_length=%d (expected false, or length 2)\n", ok, n);
assert(term_snapshot_update(s, t));
n = term_snapshot_cluster(s, term_snapshot_row(s, 0)[0].text, cps, 16);
printf("retry after allocation recovers: cluster_length=%d (expected 2)\n", n);
term_snapshot_free(s);
term_free(t);
options.size.y = 24;
t = term_new(&options);
s = term_snapshot_new();
assert(t && s);
const char line[] = "e\xcc\x81\r\n";
for (int i = 1; i <= 10000; i++) {
term_feed(t, line, sizeof(line) - 1, 0);
assert(term_snapshot_update(s, t));
if (i == 1000 || i == 10000)
printf("after %d lines: arena_words=%u dead_words=%u history_rows=%d\n",
i, s->arena_len, s->arena_dead, term_history_rows(t));
}
term_snapshot_free(s);
term_free(t);
options.size = (struct term_vector2i){ 8, 4 };
t = term_new(&options);
s = term_snapshot_new();
assert(t && s);
const char rows[] = "A\r\nB\r\nC\r\nD";
term_feed(t, rows, sizeof(rows) - 1, 0);
assert(term_snapshot_update(s, t));
printf("before failed height shrink: top=%c cursor_y=%d history=%d\n",
(char)term_snapshot_row(s, 0)[0].text, term_cursor(t).pos.y, term_history_rows(t));
fail_resize_calloc = 1;
ok = term_resize(t, (struct term_vector2i){ 8, 2 });
assert(!fail_resize_calloc);
assert(term_snapshot_update(s, t));
printf("after failed height shrink: resize=%d height=%d top=%c cursor_y=%d history=%d\n",
ok, term_size(t).y, (char)term_snapshot_row(s, 0)[0].text,
term_cursor(t).pos.y, term_history_rows(t));
term_snapshot_free(s);
term_free(t);
return 0;
}
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