word_at_test.go RawHistoryFolder

1package edit
2
3import "testing"
4
5func TestWordAtSegmentAndRightBoundary(t *testing.T) {
6	s := State{Value: "one two!"}
7	for _, tc := range []struct{ offset, start, end int }{{0, 0, 3}, {2, 0, 3}, {3, 3, 4}, {4, 4, 7}, {6, 4, 7}, {7, 7, 8}, {8, 8, 8}} {
8		a, b := s.WordAt(tc.offset)
9		if a != tc.start || b != tc.end {
10			t.Errorf("WordAt(%d)=%d:%d want %d:%d", tc.offset, a, b, tc.start, tc.end)
11		}
12	}
13	s.Sync("é 猫")
14	if a, b := s.WordAt(len("é ")); a != len("é ") || b != len(s.Value) {
15		t.Fatalf("UTF-8 boundary %d:%d", a, b)
16	}
17}