Fix User-Agent tests (#105)

* Fix User-Agent tests

* Bump the version

package.json

@@ -5,7 +5,7 @@
     "email": "azsdkteam@microsoft.com",
     "url": "https://github.com/Azure/ms-rest-azure-js"
   },
-  "version": "1.3.1",
+  "version": "1.3.2",
   "description": "Isomorphic Azure client runtime for Typescript/node.js/browser javascript client libraries generated using AutoRest",
   "tags": [
     "isomorphic",

test/azureServiceClientTests.ts

@@ -2513,7 +2513,12 @@ describe("AzureServiceClient", () => {
 
   describe("updateOptionsWithDefaultValues()", () => {
     function assertOptionEqual(actual: AzureServiceClientOptions, expected: AzureServiceClientOptions) {
-      const actualUserAgent = actual.userAgent;
+      let actualUserAgent: string | undefined;
+      if (typeof actual.userAgent === "string") {
+        actualUserAgent = actual.userAgent;
+      } else if (typeof actual.userAgent === "function") {
+        actualUserAgent = actual.userAgent("");
+      }
       delete actual.userAgent;
       delete expected.userAgent;