diff --git a/src/cli/update-cli.test.ts b/src/cli/update-cli.test.ts
index f638db13afc..4f147abb4fd 100644
--- a/src/cli/update-cli.test.ts
+++ b/src/cli/update-cli.test.ts
@@ -803,9 +803,22 @@ describe("update-cli", () => {
     platformSpy.mockRestore();
 
     expect(runGatewayUpdate).not.toHaveBeenCalled();
-    expect(runCommandWithTimeout).toHaveBeenCalledWith(
-      [brewNpm, "i", "-g", "openclaw@latest", "--no-fund", "--no-audit", "--loglevel=error"],
-      expect.any(Object),
+    const installCall = vi
+      .mocked(runCommandWithTimeout)
+      .mock.calls.find(
+        ([argv]) =>
+          Array.isArray(argv) &&
+          path.normalize(String(argv[0] ?? "")) === path.normalize(brewNpm) &&
+          argv[1] === "i" &&
+          argv[2] === "-g" &&
+          argv[3] === "openclaw@latest",
+      );
+
+    expect(installCall).toBeDefined();
+    expect(installCall?.[1]).toEqual(
+      expect.objectContaining({
+        timeoutMs: expect.any(Number),
+      }),
     );
   });
 
diff --git a/src/media/server.test.ts b/src/media/server.test.ts
index e26ea41a986..134efb0ab52 100644
--- a/src/media/server.test.ts
+++ b/src/media/server.test.ts
@@ -4,6 +4,7 @@ import type { AddressInfo } from "node:net";
 import os from "node:os";
 import path from "node:path";
 import { afterAll, beforeAll, describe, expect, it, vi } from "vitest";
+import { withEnvAsync } from "../test-utils/env.js";
 
 let MEDIA_DIR = "";
 const cleanOldMedia = vi.fn().mockResolvedValue(undefined);
@@ -20,6 +21,16 @@ vi.mock("./store.js", async (importOriginal) => {
 let startMediaServer: typeof import("./server.js").startMediaServer;
 let MEDIA_MAX_BYTES: typeof import("./store.js").MEDIA_MAX_BYTES;
 let realFetch: typeof import("undici").fetch;
+const LOOPBACK_FETCH_ENV = {
+  HTTP_PROXY: undefined,
+  HTTPS_PROXY: undefined,
+  ALL_PROXY: undefined,
+  http_proxy: undefined,
+  https_proxy: undefined,
+  all_proxy: undefined,
+  NO_PROXY: "127.0.0.1,localhost",
+  no_proxy: "127.0.0.1,localhost",
+} as const;
 
 async function waitForFileRemoval(filePath: string, maxTicks = 1000) {
   for (let tick = 0; tick < maxTicks; tick += 1) {
@@ -77,7 +88,7 @@ describe("media server", () => {
   }) {
     const file = await writeMediaFile(params.id, params.contents);
     await params.mutateFile?.(file);
-    const res = await realFetch(mediaUrl(params.id));
+    const res = await withEnvAsync(LOOPBACK_FETCH_ENV, () => realFetch(mediaUrl(params.id)));
     expectFetchedResponse(res, { status: params.expectedStatus });
     if (params.expectedBody !== undefined) {
       expect(await res.text()).toBe(params.expectedBody);
@@ -93,7 +104,7 @@ describe("media server", () => {
     setup?: () => Promise<void>;
   }) {
     await params.setup?.();
-    const res = await realFetch(mediaUrl(params.mediaPath));
+    const res = await withEnvAsync(LOOPBACK_FETCH_ENV, () => realFetch(mediaUrl(params.mediaPath)));
     expectFetchedResponse(res, {
       status: params.expectedStatus,
       ...(params.expectedNoSniff ? { noSniff: true } : {}),
diff --git a/src/process/exec.test.ts b/src/process/exec.test.ts
index 4a3cca6b681..febe67370fe 100644
--- a/src/process/exec.test.ts
+++ b/src/process/exec.test.ts
@@ -12,6 +12,10 @@ import {
 } from "./exec.js";
 
 describe("runCommandWithTimeout", () => {
+  function createSilentIdleArgv(): string[] {
+    return [process.execPath, "-e", "setInterval(() => {}, 1_000)"];
+  }
+
   beforeEach(() => {
     vi.useRealTimers();
   });
@@ -89,13 +93,10 @@ describe("runCommandWithTimeout", () => {
     "kills command when no output timeout elapses",
     { timeout: 15_000 },
     async () => {
-      const result = await runCommandWithTimeout(
-        [process.execPath, "-e", "setTimeout(() => {}, 5_000)"],
-        {
-          timeoutMs: 2_000,
-          noOutputTimeoutMs: 200,
-        },
-      );
+      const result = await runCommandWithTimeout(createSilentIdleArgv(), {
+        timeoutMs: 2_000,
+        noOutputTimeoutMs: 200,
+      });
 
       expect(result.termination).toBe("no-output-timeout");
       expect(result.noOutputTimedOut).toBe(true);
@@ -107,12 +108,9 @@ describe("runCommandWithTimeout", () => {
     "reports global timeout termination when overall timeout elapses",
     { timeout: 15_000 },
     async () => {
-      const result = await runCommandWithTimeout(
-        [process.execPath, "-e", "setTimeout(() => {}, 5_000)"],
-        {
-          timeoutMs: 200,
-        },
-      );
+      const result = await runCommandWithTimeout(createSilentIdleArgv(), {
+        timeoutMs: 200,
+      });
 
       expect(result.termination).toBe("timeout");
       expect(result.noOutputTimedOut).toBe(false);