From 9340bd800e53ab9334e7d1e50eb14a7091b91993 Mon Sep 17 00:00:00 2001
From: Anton Pidkuiko MacBook <antonp@anthropic.com>
Date: Tue, 24 Feb 2026 16:57:18 +0000
Subject: [PATCH] =?UTF-8?q?test:=20add=20App=20=E2=86=92=20AppBridge=20int?=
 =?UTF-8?q?egration=20test=20for=20downloadFile?=
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---
 src/app-bridge.test.ts | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/src/app-bridge.test.ts b/src/app-bridge.test.ts
index 202b2ed..310e38e 100644
--- a/src/app-bridge.test.ts
+++ b/src/app-bridge.test.ts
@@ -712,6 +712,36 @@ describe("App <-> AppBridge integration", () => {
       expect(result.content).toEqual(resultContent);
     });
 
+    it("ondownloadfile setter registers handler for ui/download-file requests", async () => {
+      const downloadParams = {
+        contents: [
+          {
+            type: "resource" as const,
+            resource: {
+              uri: "file:///export.json",
+              mimeType: "application/json",
+              text: '{"key":"value"}',
+            },
+          },
+        ],
+      };
+      const receivedRequests: unknown[] = [];
+
+      bridge.ondownloadfile = async (params) => {
+        receivedRequests.push(params);
+        return {};
+      };
+
+      await bridge.connect(bridgeTransport);
+      await app.connect(appTransport);
+
+      const result = await app.downloadFile(downloadParams);
+
+      expect(receivedRequests).toHaveLength(1);
+      expect(receivedRequests[0]).toMatchObject(downloadParams);
+      expect(result).toEqual({});
+    });
+
     it("callServerTool throws a helpful error when called with a string instead of params object", async () => {
       await bridge.connect(bridgeTransport);
       await app.connect(appTransport);