test(credential-provider-ini): set profile in integ test (#6732)

Author: kuhe

Diff for: packages/credential-provider-ini/src/fromIni.integ.spec.ts

@@ -3,7 +3,7 @@ import { HttpRequest, HttpResponse } from "@smithy/protocol-http";
 import { SourceProfileInit } from "@smithy/shared-ini-file-loader";
 import type { NodeHttpHandlerOptions, ParsedIniData } from "@smithy/types";
 import { PassThrough } from "node:stream";
-import { beforeEach, describe, expect, test as it, vi } from "vitest";
+import { afterEach, beforeEach, describe, expect, test as it, vi } from "vitest";
 
 import { fromIni } from "./fromIni";
 
@@ -133,6 +133,7 @@ class MockNodeHttpHandler {
 
 describe("fromIni region search order", () => {
   beforeEach(() => {
+    process.env.AWS_PROFILE = "default";
     iniProfileData = {
       default: {
         region: "us-west-2",
@@ -153,6 +154,10 @@ describe("fromIni region search order", () => {
     });
   });
 
+  afterEach(() => {
+    delete process.env.AWS_PROFILE;
+  });
+
   it("should use 1st priority for the clientConfig given to the provider factory", async () => {
     const sts = new STS({
       requestHandler: new MockNodeHttpHandler(),