Reports refactoring & tests

maigret/utils.py

@@ -2,12 +2,17 @@ import re
 
 
 class CaseConverter:
-	@staticmethod
-	def camel_to_snake(camelcased_string: str):
-		return re.sub(r'(?<!^)(?=[A-Z])', '_', camelcased_string).lower()
+    @staticmethod
+    def camel_to_snake(camelcased_string: str):
+        return re.sub(r'(?<!^)(?=[A-Z])', '_', camelcased_string).lower()
 
-	@staticmethod
-	def snake_to_camel(snakecased_string: str):
-		formatted = ''.join(word.title() for word in snakecased_string.split('_'))
-		result = formatted[0].lower() + formatted[1:]
-		return result
+    @staticmethod
+    def snake_to_camel(snakecased_string: str):
+        formatted = ''.join(word.title() for word in snakecased_string.split('_'))
+        result = formatted[0].lower() + formatted[1:]
+        return result
+
+
+def is_country_tag(tag):
+    """detect if tag represent a country"""
+    return bool(re.match("^([a-z]){2}$", tag))