Add implicit IGNORE_IF_UNPOPULATED for MessageOneofRule fields (#321)

bufbuild/protovalidate#382

---------

Signed-off-by: Sri Krishna <skrishna@buf.build>

Author: srikrsna-buf

Makefile

@@ -17,7 +17,7 @@ ADD_LICENSE_HEADER := $(BIN)/license-header \
 		--copyright-holder "Buf Technologies, Inc." \
 		--year-range "2023-2025"
 # This version should be kept in sync with the version in buf.yaml
-PROTOVALIDATE_VERSION ?= v0.13.1
+PROTOVALIDATE_VERSION ?= v0.13.3
 # Version of the cel-spec that this implementation is conformant with
 # This should be kept in sync with the version in format_test.py
 CEL_SPEC_VERSION ?= v0.24.0

buf.lock

@@ -2,8 +2,8 @@
 version: v2
 deps:
   - name: buf.build/bufbuild/protovalidate
-    commit: c6451e2c05a64a659a0835011a72516c
-    digest: b5:826b8be86c1bc691afb751fb33c513cb90a9b9d03699b366a7812737e72fe06132d13ca4b2f5fdb9c5784594b0f65b20b850003349a556e8f020b84ce6787bd1
+    commit: 9f2d3c737feb481a83375159c0733275
+    digest: b5:19d3b83f7df2d284ff5935f4622d7f27e7464a93c210edb536e92a52bcc69b2a18da1312e96b5461601eba7b3764d5e90321bd62e6966870e7dbc2e4dedd98d6
   - name: buf.build/bufbuild/protovalidate-testing
-    commit: 33dd956ff33d4a4085b2fa05cd7a14b8
-    digest: b5:d142307939a7b8486fe7698e7d244c7e9c4a9c7ef812c97b46e8a7cc362f9c666f94f84dd66ad72fdb272ec23ed0cc415deed365318efdc9b24b92ef4e9ec415
+    commit: 64cb206b26e840bcaacabae7b19bdf33
+    digest: b5:f0abbad11668a70061ec8870c8c6b71f56e033ff97e0c22264648504e9a9c9f636304a01e27485eeacf7256f9bf25abc48503836948609f537a0fbc136be839b

buf.yaml

@@ -2,8 +2,8 @@ version: v2
 modules:
   - path: proto
 deps:
-  - buf.build/bufbuild/protovalidate:v0.13.1
-  - buf.build/bufbuild/protovalidate-testing:v0.13.1
+  - buf.build/bufbuild/protovalidate:v0.13.3
+  - buf.build/bufbuild/protovalidate-testing:v0.13.3
 lint:
   use:
     - STANDARD

gen/buf/validate/conformance/cases/messages_pb2.py

@@ -1047,10 +1047,13 @@ def _new_field_rule(
     def _new_rules(self, desc: descriptor.Descriptor) -> list[Rules]:
         result: list[Rules] = []
         rule: typing.Optional[Rules] = None
+        all_msg_oneof_fields = set()
         if validate_pb2.message in desc.GetOptions().Extensions:
             message_level = desc.GetOptions().Extensions[validate_pb2.message]
             if message_level.disabled:
                 return []
+            for oneof in message_level.oneof:
+                all_msg_oneof_fields.update(oneof.fields)
             if rule := self._new_message_rule(message_level, desc):
                 result.append(rule)
 
@@ -1062,6 +1065,11 @@ def _new_rules(self, desc: descriptor.Descriptor) -> list[Rules]:
         for field in desc.fields:
             if validate_pb2.field in field.GetOptions().Extensions:
                 field_level = field.GetOptions().Extensions[validate_pb2.field]
+                if not field_level.HasField("ignore") and field.name in all_msg_oneof_fields:
+                    field_level_override = validate_pb2.FieldRules()
+                    field_level_override.CopyFrom(field_level)
+                    field_level_override.ignore = validate_pb2.IGNORE_IF_UNPOPULATED
+                    field_level = field_level_override
                 if field_level.ignore == validate_pb2.IGNORE_ALWAYS:
                     continue
                 result.append(self._new_field_rule(field, field_level))