EC2: Enabled regex matching in filters (#7789)

moto/ec2/utils.py

@@ -517,13 +517,13 @@ def filter_internet_gateways(
 
 def is_filter_matching(obj: Any, _filter: str, filter_value: Any) -> bool:
     value = obj.get_filter_value(_filter)
-
     if filter_value is None:
         return False
 
     if isinstance(value, str):
         if not isinstance(filter_value, list):
             filter_value = [filter_value]
+
         if any(fnmatch.fnmatch(value, pattern) for pattern in filter_value):
             return True
         return False
@@ -534,6 +534,9 @@ def is_filter_matching(obj: Any, _filter: str, filter_value: Any) -> bool:
 
     try:
         value = set(value)
+        if isinstance(filter_value, list) and len(filter_value) == 1:
+            return any(fnmatch.fnmatch(element, filter_value[0]) for element in value)
+
         return (value and value.issubset(filter_value)) or value.issuperset(
             filter_value
         )

tests/test_ec2/test_route_tables.py

@@ -283,7 +283,6 @@ def test_route_tables_filters_transit_gateway():
 
     gateway = response["TransitGateway"]
     main_route_table.create_route(TransitGatewayId=gateway["TransitGatewayId"])
-
     route_tables = client.describe_route_tables(
         Filters=[
             {
@@ -297,6 +296,20 @@ def test_route_tables_filters_transit_gateway():
     route_table = route_tables[0]
     assert route_table["RouteTableId"] == main_route_table_id
 
+    # Filter using regex
+    route_tables = client.describe_route_tables(
+        Filters=[
+            {
+                "Name": "route.transit-gateway-id",
+                "Values": ["tgw-*"],
+            }
+        ]
+    )["RouteTables"]
+
+    assert len(route_tables) == 1
+    route_table = route_tables[0]
+    assert route_table["RouteTableId"] == main_route_table_id
+
 
 @mock_aws
 def test_route_table_associations():