tests/snapshot_scroll_arena_test.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

/* Include snapshot.c to inspect its private arena accounting. The static
 * library supplies the terminal implementation; this translation unit's
 * snapshot symbols satisfy the test's references before the archive is read.
 */
#include <assert.h>
#include "../src/snapshot.c"

int main(void)
{
    struct wsap_vtcore_options options = { .size = { 8, 24 }, .scrollback = 5 };
    struct wsap_vtcore *t = wsap_vtcore_new(&options);
    struct wsap_vtcore_snapshot *s = wsap_vtcore_snapshot_new();
    assert(t && s && wsap_vtcore_snapshot_update(s, t));

    const char line[] = "e\xcc\x81\r\n";
    for (int i = 0; i < 10000; i++) {
        wsap_vtcore_feed(t, line, sizeof(line) - 1, 0);
        assert(wsap_vtcore_snapshot_update(s, t));
    }

    /* A fixed viewport holds fewer than 24 * 8 cluster records at once.
     * Dead records are compacted before they can dominate this arena. */
    assert(wsap_vtcore_history_rows(t) == 5);
    assert(s->arena_len < 8192);

    wsap_vtcore_snapshot_free(s);
    wsap_vtcore_free(t);
    return 0;
}