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term: add unit test for term_erase_scrollback()

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Daniel Eklöf 2021-07-18 15:34:19 +02:00
parent 5f0ceb72f1
commit d0a7f999c6
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terminal.c
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@ -2074,6 +2074,103 @@ term_erase_scrollback(struct terminal *term)
term_damage_view(term);
}
UNITTEST
{
const int scrollback_rows = 16;
const int term_rows = 5;
const int cols = 5;
struct fdm *fdm = fdm_init();
xassert(fdm != NULL);
struct terminal term = {
.fdm = fdm,
.rows = term_rows,
.cols = cols,
.normal = {
.rows = xcalloc(scrollback_rows, sizeof(term.normal.rows[0])),
.num_rows = scrollback_rows,
.num_cols = cols,
},
.grid = &term.normal,
.selection = {
.start = {-1, -1},
.end = {-1, -1},
.kind = SELECTION_NONE,
.auto_scroll = {
.fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK),
},
},
};
xassert(term.selection.auto_scroll.fd >= 0);
#define populate_scrollback() do { \
for (int i = 0; i < scrollback_rows; i++) { \
if (term.normal.rows[i] == NULL) { \
struct row *r = xcalloc(1, sizeof(*term.normal.rows[i])); \
r->cells = xcalloc(cols, sizeof(r->cells[0])); \
term.normal.rows[i] = r; \
} \
} \
} while (0)
/*
* Test case 1 - no selection, just verify all rows except those
* on screen have been deleted.
*/
populate_scrollback();
term.normal.offset = 11;
term_erase_scrollback(&term);
for (int i = 0; i < scrollback_rows; i++) {
if (i >= term.normal.offset && i < term.normal.offset + term_rows)
xassert(term.normal.rows[i] != NULL);
else
xassert(term.normal.rows[i] == NULL);
}
/*
* Test case 2 - selection that touches the scrollback. Verify the
* selection is cancelled.
*/
term.normal.offset = 14; /* Screen covers rows 14,15,0,1,2 */
/* Selection covers rows 15,0,1,2,3 */
term.selection.start = (struct coord){.row = 15};
term.selection.end = (struct coord){.row = 19};
term.selection.kind = SELECTION_CHAR_WISE;
populate_scrollback();
term_erase_scrollback(&term);
xassert(term.selection.start.row < 0);
xassert(term.selection.end.row < 0);
xassert(term.selection.kind == SELECTION_NONE);
/*
* Test case 3 - selection that does *not* touch the
* scrollback. Verify the selection is *not* cancelled.
*/
/* Selection covers rows 15,0 */
term.selection.start = (struct coord){.row = 15};
term.selection.end = (struct coord){.row = 16};
term.selection.kind = SELECTION_CHAR_WISE;
populate_scrollback();
term_erase_scrollback(&term);
xassert(term.selection.start.row == 15);
xassert(term.selection.end.row == 16);
xassert(term.selection.kind == SELECTION_CHAR_WISE);
close(term.selection.auto_scroll.fd);
for (int i = 0; i < scrollback_rows; i++)
grid_row_free(term.normal.rows[i]);
free(term.normal.rows);
fdm_destroy(fdm);
}
int
term_row_rel_to_abs(const struct terminal *term, int row)
{