standard-tests[major]: use pydantic v2

libs/standard-tests/langchain_standard_tests/integration_tests/chat_models.py

@@ -16,10 +16,10 @@ from langchain_core.messages import (
 )
 from langchain_core.output_parsers import StrOutputParser
 from langchain_core.prompts import ChatPromptTemplate
-from langchain_core.pydantic_v1 import BaseModel, Field
 from langchain_core.tools import tool
-from pydantic import BaseModel as RawBaseModel
+from pydantic import BaseModel, Field
-from pydantic import Field as RawField
+from pydantic.v1 import BaseModel as BaseModelV1
+from pydantic.v1 import Field as FieldV1
 
 from langchain_standard_tests.unit_tests.chat_models import (
     ChatModelTests,
@@ -28,8 +28,8 @@ from langchain_standard_tests.unit_tests.chat_models import (
 from langchain_standard_tests.utils.pydantic import PYDANTIC_MAJOR_VERSION
 
 
-class MagicFunctionSchema(RawBaseModel):
+class MagicFunctionSchema(BaseModel):
-    input: int = RawField(..., gt=-1000, lt=1000)
+    input: int = Field(..., gt=-1000, lt=1000)
 
 
 @tool(args_schema=MagicFunctionSchema)
@@ -240,14 +240,11 @@ class ChatModelIntegrationTests(ChatModelTests):
         if not self.has_tool_calling:
             pytest.skip("Test requires tool calling.")
 
-        from pydantic import BaseModel as BaseModelProper
+        class Joke(BaseModel):
-        from pydantic import Field as FieldProper
-
-        class Joke(BaseModelProper):
             """Joke to tell user."""
 
-            setup: str = FieldProper(description="question to set up a joke")
+            setup: str = Field(description="question to set up a joke")
-            punchline: str = FieldProper(description="answer to resolve the joke")
+            punchline: str = Field(description="answer to resolve the joke")
 
         # Pydantic class
         # Type ignoring since the interface only officially supports pydantic 1
@@ -280,11 +277,11 @@ class ChatModelIntegrationTests(ChatModelTests):
         if not self.has_tool_calling:
             pytest.skip("Test requires tool calling.")
 
-        class Joke(BaseModel):  # Uses langchain_core.pydantic_v1.BaseModel
+        class Joke(BaseModelV1):  # Uses langchain_core.pydantic_v1.BaseModel
             """Joke to tell user."""
 
-            setup: str = Field(description="question to set up a joke")
+            setup: str = FieldV1(description="question to set up a joke")
-            punchline: str = Field(description="answer to resolve the joke")
+            punchline: str = FieldV1(description="answer to resolve the joke")
 
         # Pydantic class
         chat = model.with_structured_output(Joke)
@@ -439,7 +436,7 @@ class ChatModelIntegrationTests(ChatModelTests):
         if not self.supports_anthropic_inputs:
             return
 
-        class color_picker(BaseModel):
+        class color_picker(BaseModelV1):
             """Input your fav color and get a random fact about it."""
 
             fav_color: str

libs/standard-tests/langchain_standard_tests/unit_tests/chat_models.py

@@ -6,9 +6,18 @@ from unittest import mock
 
 import pytest
 from langchain_core.language_models import BaseChatModel
-from langchain_core.pydantic_v1 import BaseModel, Field, SecretStr
 from langchain_core.runnables import RunnableBinding
 from langchain_core.tools import tool
+from pydantic import BaseModel, Field, SecretStr
+from pydantic.v1 import (
+    BaseModel as BaseModelV1,
+)
+from pydantic.v1 import (
+    Field as FieldV1,
+)
+from pydantic.v1 import (
+    ValidationError as ValidationErrorV1,
+)
 
 from langchain_standard_tests.base import BaseStandardTests
 from langchain_standard_tests.utils.pydantic import PYDANTIC_MAJOR_VERSION
@@ -25,27 +34,24 @@ def generate_schema_pydantic_v1_from_2() -> Any:
     """Use to generate a schema from v1 namespace in pydantic 2."""
     if PYDANTIC_MAJOR_VERSION != 2:
         raise AssertionError("This function is only compatible with Pydantic v2.")
-    from pydantic.v1 import BaseModel, Field
 
-    class PersonB(BaseModel):
+    class PersonB(BaseModelV1):
         """Record attributes of a person."""
 
-        name: str = Field(..., description="The name of the person.")
+        name: str = FieldV1(..., description="The name of the person.")
-        age: int = Field(..., description="The age of the person.")
+        age: int = FieldV1(..., description="The age of the person.")
 
     return PersonB
 
 
 def generate_schema_pydantic() -> Any:
     """Works with either pydantic 1 or 2"""
-    from pydantic import BaseModel as BaseModelProper
-    from pydantic import Field as FieldProper
 
-    class PersonA(BaseModelProper):
+    class PersonA(BaseModel):
         """Record attributes of a person."""
 
-        name: str = FieldProper(..., description="The name of the person.")
+        name: str = Field(..., description="The name of the person.")
-        age: int = FieldProper(..., description="The age of the person.")
+        age: int = Field(..., description="The age of the person.")
 
     return PersonA
 
@@ -199,9 +205,7 @@ class ChatModelUnitTests(ChatModelTests):
         assert model.with_structured_output(schema) is not None
 
     def test_standard_params(self, model: BaseChatModel) -> None:
-        from langchain_core.pydantic_v1 import BaseModel, ValidationError
+        class ExpectedParams(BaseModelV1):
-
-        class ExpectedParams(BaseModel):
             ls_provider: str
             ls_model_name: str
             ls_model_type: Literal["chat"]
@@ -212,7 +216,7 @@ class ChatModelUnitTests(ChatModelTests):
         ls_params = model._get_ls_params()
         try:
             ExpectedParams(**ls_params)
-        except ValidationError as e:
+        except ValidationErrorV1 as e:
             pytest.fail(f"Validation error: {e}")
 
         # Test optional params
@@ -222,5 +226,5 @@ class ChatModelUnitTests(ChatModelTests):
         ls_params = model._get_ls_params()
         try:
             ExpectedParams(**ls_params)
-        except ValidationError as e:
+        except ValidationErrorV1 as e:
             pytest.fail(f"Validation error: {e}")

libs/standard-tests/langchain_standard_tests/unit_tests/embeddings.py

@@ -5,7 +5,7 @@ from unittest import mock
 
 import pytest
 from langchain_core.embeddings import Embeddings
-from langchain_core.pydantic_v1 import SecretStr
+from pydantic import SecretStr
 
 from langchain_standard_tests.base import BaseStandardTests