Add a grapheme cluster test for emoji flags

Fixed unicode-org#4780.
aethanyc · Apr 6, 2024 · c6093f2 · c6093f2
1 parent 8631983
commit c6093f2
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/components/segmenter/src/grapheme.rs b/components/segmenter/src/grapheme.rs
@@ -268,3 +268,10 @@ fn empty_string() {
     let breaks: Vec<usize> = segmenter.segment_str("").collect();
     assert_eq!(breaks, [0]);
 }
+
+#[test]
+fn emoji_flag() {
+    let segmenter = GraphemeClusterSegmenter::new();
+    let breaks: Vec<usize> = segmenter.segment_str("🇺🇸🏴󠁧󠁢󠁥󠁮󠁧󠁿").collect();
+    assert_eq!(breaks, [0, 8, 36]);
+}