chore: checkpoint before Python removal

vendor/ucd-trie/benches/bench.rs

@@ -0,0 +1,25 @@
+#![feature(test)]
+
+extern crate test;
+
+use once_cell::sync::Lazy;
+use ucd_trie::TrieSetOwned;
+
+#[bench]
+fn bench_trie_set(b: &mut test::Bencher) {
+    const CHARS: &'static [char] = &['a', 'β', '☃', '😼'];
+    // const CHARS: &'static [char] = &['a'];
+    static SET: Lazy<TrieSetOwned> =
+        Lazy::new(|| TrieSetOwned::from_scalars(CHARS).unwrap());
+
+    let set = Lazy::force(&SET);
+    let mut i = 0;
+    b.iter(|| {
+        let c = CHARS[i];
+        i = (i + 1) % CHARS.len();
+
+        for _ in 0..10000 {
+            assert!(set.contains_char(c));
+        }
+    });
+}