standard-tests: rename langchain_standard_tests to langchain_tests, release 0.3.2 (#28203)

libs/standard-tests/langchain_tests/unit_tests/tools.py

@@ -0,0 +1,73 @@
+import os
+from abc import abstractmethod
+from typing import Callable, Tuple, Type, Union
+from unittest import mock
+
+import pytest
+from langchain_core.tools import BaseTool
+from pydantic import SecretStr
+
+from langchain_tests.base import BaseStandardTests
+
+
+class ToolsTests(BaseStandardTests):
+    @property
+    @abstractmethod
+    def tool_constructor(self) -> Union[Type[BaseTool], Callable]: ...
+
+    @property
+    def tool_constructor_params(self) -> dict:
+        return {}
+
+    @property
+    def tool_invoke_params_example(self) -> dict:
+        """
+        Returns a dictionary representing the "args" of an example tool call.
+
+        This should NOT be a ToolCall dict - i.e. it should not
+        have {"name", "id", "args"} keys.
+        """
+        return {}
+
+    @pytest.fixture
+    def tool(self) -> BaseTool:
+        return self.tool_constructor(**self.tool_constructor_params)
+
+
+class ToolsUnitTests(ToolsTests):
+    def test_init(self) -> None:
+        tool = self.tool_constructor(**self.tool_constructor_params)
+        assert tool is not None
+
+    @property
+    def init_from_env_params(self) -> Tuple[dict, dict, dict]:
+        """Return env vars, init args, and expected instance attrs for initializing
+        from env vars."""
+        return {}, {}, {}
+
+    def test_init_from_env(self) -> None:
+        env_params, tools_params, expected_attrs = self.init_from_env_params
+        if env_params:
+            with mock.patch.dict(os.environ, env_params):
+                tool = self.tool_constructor(**tools_params)
+            assert tool is not None
+            for k, expected in expected_attrs.items():
+                actual = getattr(tool, k)
+                if isinstance(actual, SecretStr):
+                    actual = actual.get_secret_value()
+                assert actual == expected
+
+    def test_has_name(self, tool: BaseTool) -> None:
+        assert tool.name
+
+    def test_has_input_schema(self, tool: BaseTool) -> None:
+        assert tool.get_input_schema()
+
+    def test_input_schema_matches_invoke_params(self, tool: BaseTool) -> None:
+        """
+        Tests that the provided example params match the declared input schema
+        """
+        # this will be a pydantic object
+        input_schema = tool.get_input_schema()
+
+        assert input_schema(**self.tool_invoke_params_example)