Fix UrlConversion Test - remove sensitivity to environment variables (huggingface#1449)

Update to improve Environment Variable handling and ensure test is not sensitive to presence of token.

---------

Co-authored-by: Julien Chaumond <[email protected]>

Author: evalstate

packages/mcp-client/cli.ts

@@ -4,12 +4,12 @@ import { stdin, stdout } from "node:process";
 import { join } from "node:path";
 import { homedir } from "node:os";
 import type { StdioServerParameters } from "@modelcontextprotocol/sdk/client/stdio.js";
-import type { ServerConfig } from "./src/types";
 import type { InferenceProviderOrPolicy } from "@huggingface/inference";
 import { ANSI, urlToServerConfig } from "./src/utils";
 import { Agent } from "./src";
 import { version as packageVersion } from "./package.json";
 import { parseArgs } from "node:util";
+import type { ServerConfig } from "./src/types";
 
 const MODEL_ID = process.env.MODEL_ID ?? "Qwen/Qwen2.5-72B-Instruct";
 const PROVIDER = (process.env.PROVIDER as InferenceProviderOrPolicy) ?? "nebius";
@@ -49,7 +49,7 @@ if (urls?.length) {
 	}
 	for (const url of urls) {
 		try {
-			SERVERS.push(urlToServerConfig(url));
+			SERVERS.push(urlToServerConfig(url, process.env.HF_TOKEN));
 		} catch (error) {
 			console.error(`Error adding server from URL "${url}": ${error.message}`);
 		}

packages/mcp-client/src/utils.ts

@@ -15,7 +15,7 @@ export const ANSI = {
 	RESET: "\x1b[0m",
 };
 
-export function urlToServerConfig(urlStr: string, token?: string): ServerConfig {
+export function urlToServerConfig(urlStr: string, authToken?: string): ServerConfig {
 	if (!urlStr.startsWith("http:") && !urlStr.startsWith("https:")) {
 		throw new Error(`Unsupported URL format: ${urlStr}. Use http:// or https:// prefix.`);
 	}
@@ -34,7 +34,6 @@ export function urlToServerConfig(urlStr: string, token?: string): ServerConfig
 	}
 
 	// Check if we should include the token
-	const authToken = token ?? process.env.HF_TOKEN;
 	const shouldIncludeToken =
 		!!authToken &&
 		(hostname.endsWith(".hf.space") ||