add test

libs/langchain-anthropic/src/chat_models.ts

@@ -14,7 +14,6 @@ import {
 import {
   type StructuredOutputMethodOptions,
   type BaseLanguageModelInput,
-  type ToolDefinition,
   isOpenAITool,
 } from "@langchain/core/language_models/base";
 import { zodToJsonSchema } from "zod-to-json-schema";
@@ -698,16 +697,24 @@ export class ChatAnthropicMessages<
           name: tool.function.name,
           description: tool.function.description,
           input_schema: tool.function.parameters as AnthropicTool.InputSchema,
-        }
+        };
       }
       if (isLangChainTool(tool)) {
         return {
           name: tool.name,
           description: tool.description,
-          input_schema: zodToJsonSchema(tool.schema) as AnthropicTool.InputSchema,
-        }
+          input_schema: zodToJsonSchema(
+            tool.schema
+          ) as AnthropicTool.InputSchema,
+        };
       }
-      throw new Error(`Unknown tool type passed to ChatAnthropic: ${JSON.stringify(tool, null, 2)}`);
+      throw new Error(
+        `Unknown tool type passed to ChatAnthropic: ${JSON.stringify(
+          tool,
+          null,
+          2
+        )}`
+      );
     });
   }
 

libs/langchain-anthropic/src/tests/chat_models-tools.int.test.ts

@@ -461,3 +461,30 @@ test("streaming with structured output", async () => {
   }
   expect(typeof finalChunk2).toEqual("object");
 });
+
+test("Can bound and invoke different tool types", async () => {
+  const langchainTool = {
+    name: "get_weather_lc",
+    description: "Get the weather of a specific location.",
+    schema: zodSchema,
+  };
+  const openaiTool = {
+    type: "function",
+    function: {
+      name: "get_weather_oai",
+      description: "Get the weather of a specific location.",
+      parameters: zodToJsonSchema(zodSchema),
+    },
+  };
+  const anthropicTool = {
+    name: "get_weather_ant",
+    description: "Get the weather of a specific location.",
+    input_schema: zodToJsonSchema(zodSchema),
+  };
+  const tools = [langchainTool, openaiTool, anthropicTool];
+  const modelWithTools = model.bindTools(tools);
+  const result = await modelWithTools.invoke(
+    "Whats the current weather in san francisco?"
+  );
+  expect(result.tool_calls?.length).toBeGreaterThanOrEqual(1);
+});