diff options
| -rw-r--r-- | core/text-test.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/core/text-test.c b/core/text-test.c index 0136657..efb81ef 100644 --- a/core/text-test.c +++ b/core/text-test.c @@ -329,6 +329,74 @@ int main(int argc, char *argv[]) { ok(text_mark_get(txt, mof) == pos+delta, "Mark restored"); text_undo(txt); } + + text_snapshot(txt); + + /* Test branching of the revision tree: + * + * 0 -- 1 -- 2 -- 3 + * \ + * `-- 4 -- 5 -- 6 -- 7 + */ + typedef struct { + time_t state; + char data[8]; + } Rev; + + Rev revs[8]; + size_t rev = 0; + + for (size_t i = 0; i < LENGTH(revs)/2; i++) { + snprintf(revs[i].data, sizeof revs[i].data, "%zu", i); + ok(text_delete(txt, 0, text_size(txt)) && text_size(txt) == 0, "Delete everything %zu", i); + ok(insert(txt, 0, revs[i].data) && compare(txt, revs[i].data), "Creating state %zu", i); + revs[i].state = text_state(txt); + text_snapshot(txt); + rev = i; + } + + for (size_t i = 0; i < LENGTH(revs)/4; i++) { + rev--; + ok(text_undo(txt) != EPOS && compare(txt, revs[rev].data), "Undo to state %zu", rev); + } + + for (size_t i = LENGTH(revs)/2; i < LENGTH(revs); i++) { + snprintf(revs[i].data, sizeof revs[i].data, "%zu", i); + ok(text_delete(txt, 0, text_size(txt)) && text_size(txt) == 0, "Delete everything %zu", i); + ok(insert(txt, 0, revs[i].data) && compare(txt, revs[i].data), "Creating state %zu", i); + revs[i].state = text_state(txt); + text_snapshot(txt); + rev++; + } + + while (rev > 0) { + text_undo(txt); + rev--; + } + + ok(compare(txt, revs[0].data), "Undo along main branch to state 0"); + + for (size_t i = 1; i < LENGTH(revs); i++) { + ok(text_later(txt) != EPOS && compare(txt, revs[i].data), "Advance to state %zu", i); + } + + for (size_t i = 0; i < LENGTH(revs); i++) { + time_t state = revs[i].state; + ok(text_restore(txt, state) != EPOS && text_state(txt) == state, "Restore state %zu", i); + } + + for (size_t i = LENGTH(revs)-1; i > 0; i--) { + ok(text_earlier(txt) != EPOS && compare(txt, revs[i-1].data), "Revert to state %zu", i-1); + } + + for (size_t i = 1; i < LENGTH(revs)/2; i++) { + text_redo(txt); + } + + rev = LENGTH(revs)/2-1; + ok(compare(txt, revs[rev].data), "Redo along main branch to state %zu", rev); + ok(text_redo(txt) == EPOS, "End of main branch"); + text_free(txt); return exit_status(); |