v0.31.8

src/geoip/tests.rs

@@ -1,6 +1,24 @@
 mod tests {
     use super::*;
 
+    #[test]
+    fn compact_ipv6_ranges_preserve_numeric_order() {
+        assert_eq!(std::mem::size_of::<V6Range>(), 34);
+        assert_eq!(std::mem::size_of::<V4Range>(), 12);
+        let ranges = [
+            V6Range { start: 0u128.to_be_bytes(), end: 127u128.to_be_bytes(), country: *b"PL" },
+            V6Range { start: 256u128.to_be_bytes(), end: 65535u128.to_be_bytes(), country: *b"DE" },
+            V6Range { start: (1u128 << 120).to_be_bytes(), end: u128::MAX.to_be_bytes(), country: *b"US" },
+        ];
+        for (address, expected) in [
+            (0, Some(*b"PL")), (127, Some(*b"PL")), (128, None),
+            (255, None), (256, Some(*b"DE")), (65535, Some(*b"DE")),
+            (65536, None), (1u128 << 120, Some(*b"US")), (u128::MAX, Some(*b"US")),
+        ] {
+            assert_eq!(find_v6(&ranges, address.to_be_bytes()), expected);
+        }
+    }
+
     #[test]
     fn range_lookup_handles_gaps() {
         let directory = tempfile::tempdir().unwrap();