From e9f9041b2565fa19c4e3d89c40f1594780fa6b1c Mon Sep 17 00:00:00 2001
From: Copilot <198982749+Copilot@users.noreply.github.com>
Date: Tue, 14 Apr 2026 03:47:01 +0000
Subject: [PATCH] chore: Add global fetch mock in vitest.setup.ts to suppress
 happy-dom ECONNREFUSED errors (#35131)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: crazywoola <100913391+crazywoola@users.noreply.github.com>
---
 web/vitest.setup.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/web/vitest.setup.ts b/web/vitest.setup.ts
index b945f675f7..6211fcd2f4 100644
--- a/web/vitest.setup.ts
+++ b/web/vitest.setup.ts
@@ -74,6 +74,18 @@ if (typeof globalThis.IntersectionObserver === 'undefined') {
   }
 }
 
+// Mock global fetch to prevent happy-dom from making real network calls
+// (which would cause ECONNREFUSED errors against localhost:5001).
+// Individual tests can still override via vi.spyOn(globalThis, 'fetch') or reassignment.
+globalThis.fetch = vi.fn(() =>
+  Promise.resolve(
+    new Response(JSON.stringify({}), {
+      status: 200,
+      headers: { 'Content-Type': 'application/json' },
+    }),
+  ),
+) as unknown as typeof fetch
+
 afterEach(async () => {
   // Wrap cleanup in act() to flush pending React scheduler work
   // This prevents "window is not defined" errors from React 19's scheduler