fix(community): Fix interface of chat deployment IBM and add test for…

… this case (#7666)

libs/langchain-community/src/chat_models/ibm.ts

@@ -102,9 +102,11 @@ export interface WatsonxCallOptionsChat
 }
 
 export interface WatsonxCallOptionsDeployedChat
-  extends WatsonxCallDeployedParams,
+  extends Omit<BaseChatModelCallOptions, "stop">,
+    WatsonxCallDeployedParams,
     WatsonxChatBasicOptions {
   promptIndex?: number;
+  tool_choice?: TextChatParameterTools | string | "auto" | "any";
 }
 
 type ChatWatsonxToolType = BindToolsInput | TextChatParameterTools;

libs/langchain-community/src/chat_models/tests/ibm.int.test.ts

@@ -12,6 +12,10 @@ import { LLMResult } from "@langchain/core/outputs";
 import { ChatPromptTemplate } from "@langchain/core/prompts";
 import { tool } from "@langchain/core/tools";
 import { NewTokenIndices } from "@langchain/core/callbacks/base";
+import {
+  BaseChatModel,
+  BaseChatModelCallOptions,
+} from "@langchain/core/language_models/chat_models";
 import { ChatWatsonx } from "../ibm.js";
 
 describe("Tests for chat", () => {
@@ -713,6 +717,24 @@ describe("Tests for chat", () => {
       expect(res.tool_calls[0].args.a).not.toBe(res.tool_calls[1].args.a);
       expect(res.tool_calls[0].args.b).not.toBe(res.tool_calls[1].args.b);
     });
+    test("React agent creation", async () => {
+      const model = new ChatWatsonx({
+        projectId: process.env.WATSONX_AI_PROJECT_ID,
+        serviceUrl: process.env.WATSONX_AI_SERVICE_URL as string,
+        watsonxAIApikey: process.env.WATSONX_AI_APIKEY,
+        watsonxAIAuthType: "iam",
+        version: "2024-05-31",
+        model: "mistralai/mistral-large",
+      });
+      const testModel = (
+        model: BaseChatModel<BaseChatModelCallOptions, AIMessageChunk>
+      ) => {
+        // eslint-disable-next-line no-instanceof/no-instanceof
+        if (model instanceof BaseChatModel) return true;
+        else throw new Error("Wrong model passed");
+      };
+      expect(testModel(model)).toBeTruthy();
+    });
   });
 
   describe("Test withStructuredOutput usage", () => {
@@ -762,6 +784,7 @@ describe("Tests for chat", () => {
       for await (const chunk of res) {
         expect(typeof chunk).toBe("object");
         object = chunk;
+        console.log(chunk);
       }
       expect("setup" in object).toBe(true);
       expect("punchline" in object).toBe(true);