feat: update regex, bug fixes, add tests

src/tests/mod.rs

@@ -1 +1,2 @@
 mod tests;
+pub(self) mod region_code;

src/tests/region_code.rs

@@ -0,0 +1,160 @@
+pub struct RegionCode {}
+
+impl RegionCode {
+    pub fn ad() -> &'static str {
+        "AD"
+    }
+
+    pub fn ae() -> &'static str {
+        "AE"
+    }
+
+    pub fn am() -> &'static str {
+        "AM"
+    }
+
+    pub fn ao() -> &'static str {
+        "AO"
+    }
+
+    pub fn aq() -> &'static str {
+        "AQ"
+    }
+
+    pub fn ar() -> &'static str {
+        "AR"
+    }
+
+    pub fn au() -> &'static str {
+        "AU"
+    }
+
+    pub fn bb() -> &'static str {
+        "BB"
+    }
+
+    pub fn br() -> &'static str {
+        "BR"
+    }
+
+    pub fn bs() -> &'static str {
+        "BS"
+    }
+
+    pub fn by() -> &'static str {
+        "BY"
+    }
+
+    pub fn ca() -> &'static str {
+        "CA"
+    }
+
+    pub fn ch() -> &'static str {
+        "CH"
+    }
+
+    pub fn cl() -> &'static str {
+        "CL"
+    }
+
+    pub fn cn() -> &'static str {
+        "CN"
+    }
+
+    pub fn co() -> &'static str {
+        "CO"
+    }
+
+    pub fn cs() -> &'static str {
+        "CS"
+    }
+
+    pub fn cx() -> &'static str {
+        "CX"
+    }
+
+    pub fn de() -> &'static str {
+        "DE"
+    }
+
+    pub fn fr() -> &'static str {
+        "FR"
+    }
+
+    pub fn gb() -> &'static str {
+        "GB"
+    }
+
+    pub fn hu() -> &'static str {
+        "HU"
+    }
+
+    pub fn it() -> &'static str {
+        "IT"
+    }
+
+    pub fn jp() -> &'static str {
+        "JP"
+    }
+
+    pub fn kr() -> &'static str {
+        "KR"
+    }
+
+    pub fn mx() -> &'static str {
+        "MX"
+    }
+
+    pub fn nz() -> &'static str {
+        "NZ"
+    }
+
+    pub fn pl() -> &'static str {
+        "PL"
+    }
+
+    pub fn re() -> &'static str {
+        "RE"
+    }
+
+    pub fn ru() -> &'static str {
+        "RU"
+    }
+
+    pub fn se() -> &'static str {
+        "SE"
+    }
+
+    pub fn sg() -> &'static str {
+        "SG"
+    }
+
+    pub fn un001() -> &'static str {
+        "001"
+    }
+
+    pub fn us() -> &'static str {
+        "US"
+    }
+
+    pub fn uz() -> &'static str {
+        "UZ"
+    }
+
+    pub fn yt() -> &'static str {
+        "YT"
+    }
+
+    pub fn zw() -> &'static str {
+        "ZW"
+    }
+
+    /// s a region code string representing the "unknown" region.
+    pub fn get_unknown() -> &'static str {
+        Self::zz()
+    }
+
+    pub fn zz() -> &'static str {
+        "ZZ"
+    }
+}