From 03f88e3c3d9df89da29641ed3b42f23ce791e4f8 Mon Sep 17 00:00:00 2001
From: imccyu <276526105+imccyu@users.noreply.github.com>
Date: Tue, 11 Aug 2026 20:25:12 +0800
Subject: [PATCH] test(gateway): report a business rejection under an aborted
 carrier as cancelled

---
 packages/api/gateway/tests/gateway.spec.ts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/packages/api/gateway/tests/gateway.spec.ts b/packages/api/gateway/tests/gateway.spec.ts
index c6f3a59768..8bc7817c95 100644
--- a/packages/api/gateway/tests/gateway.spec.ts
+++ b/packages/api/gateway/tests/gateway.spec.ts
@@ -1011,6 +1011,24 @@ describe('TypertGatewayService', () => {
       error: { code: 'internal', message: 'non-error failure', details: {} },
     })
 
+    // A business rejection observed while the carrier signal is already aborted
+    // is the caller's cancellation, not an internal gateway fault.
+    const cancelledCall = new AbortController()
+    cancelledCall.abort(new Error('client disconnected'))
+    service.businessError = new Error('fixture business failure')
+    await expect(handler(
+      'goals/fail',
+      { args: { request: null } },
+      cancelledCall.signal,
+    )).resolves.toEqual({
+      ok: false,
+      error: {
+        code: 'cancelled',
+        message: 'Remote invocation "goals/fail" was aborted',
+        details: {},
+      },
+    })
+
     await gatewayFiber.dispose()
     expect(connection.handler).toBeUndefined()
   })