Fix test

libs/core/langchain_core/load/mapping.py

@@ -167,6 +167,35 @@ SERIALIZABLE_MAPPING = {
         "regex",
         "RegexParser",
     ),
+    (
+        "langchain",
+        "output_parsers",
+        "openai_functions",
+        "JsonKeyOutputFunctionsParser",
+    ): (
+        "langchain",
+        "output_parsers",
+        "openai_functions",
+        "JsonKeyOutputFunctionsParser",
+    ),
+    ("langchain", "output_parsers", "openai_functions", "JsonOutputFunctionsParser"): (
+        "langchain",
+        "output_parsers",
+        "openai_functions",
+        "JsonOutputFunctionsParser",
+    ),
+    ("langchain", "output_parsers", "openai_tools", "JsonOutputKeyToolsParser"): (
+        "langchain",
+        "output_parsers",
+        "openai_tools",
+        "JsonOutputKeyToolsParser",
+    ),
+    ("langchain", "output_parsers", "openai_tools", "JsonOutputToolsParser"): (
+        "langchain",
+        "output_parsers",
+        "openai_tools",
+        "JsonOutputToolsParser",
+    ),
     ("langchain", "schema", "runnable", "DynamicRunnable"): (
         "langchain_core",
         "runnables",

libs/langchain/langchain/output_parsers/openai_functions.py

@@ -51,6 +51,11 @@ class JsonOutputFunctionsParser(BaseCumulativeTransformOutputParser[Any]):
     args_only: bool = True
     """Whether to only return the arguments to the function call."""
 
+    @classmethod
+    def is_lc_serializable(cls) -> bool:
+        """Return whether this model can be serialized by Langchain."""
+        return True
+
     @property
     def _type(self) -> str:
         return "json_functions"
@@ -129,6 +134,11 @@ class JsonKeyOutputFunctionsParser(JsonOutputFunctionsParser):
     key_name: str
     """The name of the key to return."""
 
+    @classmethod
+    def is_lc_serializable(cls) -> bool:
+        """Return whether this model can be serialized by Langchain."""
+        return True
+
     def parse_result(self, result: List[Generation], *, partial: bool = False) -> Any:
         res = super().parse_result(result, partial=partial)
         if partial and res is None:

libs/langchain/langchain/output_parsers/openai_tools.py

@@ -13,6 +13,11 @@ from langchain_core.pydantic_v1 import BaseModel
 class JsonOutputToolsParser(BaseGenerationOutputParser[Any]):
     """Parse tools from OpenAI response."""
 
+    @classmethod
+    def is_lc_serializable(cls) -> bool:
+        """Return whether this model can be serialized by Langchain."""
+        return True
+
     def parse_result(self, result: List[Generation], *, partial: bool = False) -> Any:
         generation = result[0]
         if not isinstance(generation, ChatGeneration):
@@ -45,14 +50,24 @@ class JsonOutputKeyToolsParser(JsonOutputToolsParser):
     key_name: str
     """The type of tools to return."""
 
+    @classmethod
+    def is_lc_serializable(cls) -> bool:
+        """Return whether this model can be serialized by Langchain."""
+        return True
+
     def parse_result(self, result: List[Generation], *, partial: bool = False) -> Any:
         results = super().parse_result(result)
-        return [res["args"] for res in results if results["type"] == self.key_name]
+        return [res["args"] for res in results if res["type"] == self.key_name]
 
 
 class PydanticToolsParser(JsonOutputToolsParser):
     """Parse tools from OpenAI response."""
 
+    @classmethod
+    def is_lc_serializable(cls) -> bool:
+        """Return whether this model can be serialized by Langchain."""
+        return False
+
     tools: List[Type[BaseModel]]
 
     def parse_result(self, result: List[Generation], *, partial: bool = False) -> Any: