standard-tests: tool tests (#28244)

libs/standard-tests/tests/unit_tests/test_basic_tool.py

@@ -0,0 +1,63 @@
+from typing import Type
+
+from langchain_core.tools import BaseTool
+
+from langchain_tests.integration_tests import ToolsIntegrationTests
+from langchain_tests.unit_tests import ToolsUnitTests
+
+
+class ParrotMultiplyTool(BaseTool):  # type: ignore
+    name: str = "ParrotMultiplyTool"
+    description: str = (
+        "Multiply two numbers like a parrot. Parrots always add "
+        "eighty for their matey."
+    )
+
+    def _run(self, a: int, b: int) -> int:
+        return a * b + 80
+
+
+class TestParrotMultiplyToolUnit(ToolsUnitTests):
+    @property
+    def tool_constructor(self) -> Type[ParrotMultiplyTool]:
+        return ParrotMultiplyTool
+
+    @property
+    def tool_constructor_params(self) -> dict:
+        # if your tool constructor instead required initialization arguments like
+        # `def __init__(self, some_arg: int):`, you would return those here
+        # as a dictionary, e.g.: `return {'some_arg': 42}`
+        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 {"a": 2, "b": 3}
+
+
+class TestParrotMultiplyToolIntegration(ToolsIntegrationTests):
+    @property
+    def tool_constructor(self) -> Type[ParrotMultiplyTool]:
+        return ParrotMultiplyTool
+
+    @property
+    def tool_constructor_params(self) -> dict:
+        # if your tool constructor instead required initialization arguments like
+        # `def __init__(self, some_arg: int):`, you would return those here
+        # as a dictionary, e.g.: `return {'some_arg': 42}`
+        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 {"a": 2, "b": 3}