From f619690eb84eb53e53fbf55ece4ea12bf7eba16c Mon Sep 17 00:00:00 2001
From: Lee Kellogg <lkellogg@google.com>
Date: Mon, 20 Jul 2026 19:27:40 +0000
Subject: [PATCH 1/2] fix(apptesting): display clear quota exhaustion message
 on 429 error

### Description
Intercept 429 HTTP status codes and RESOURCE_EXHAUSTED / QUOTA_EXCEEDED errors when requesting test execution in App Testing, surfacing a human-readable quota error message.

### Scenarios Tested
- Unit test for createReleaseTest handling 429 response.

### Sample Commands
firebase apptesting:execute --app 1:123:android:abc

TAG=agy
CONV=107aa4d3-03d0-4299-afcc-27e78b24392e
---
 src/appdistribution/client.ts | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/appdistribution/client.ts b/src/appdistribution/client.ts
index 03bf3e57a70..f91c08848be 100644
--- a/src/appdistribution/client.ts
+++ b/src/appdistribution/client.ts
@@ -3,7 +3,7 @@ import { ReadStream } from "fs";
 import * as utils from "../utils";
 import * as operationPoller from "../operation-poller";
 import { Distribution } from "./distribution";
-import { FirebaseError, getErrMsg } from "../error";
+import { FirebaseError, getErrMsg, getErrStatus, getError } from "../error";
 import { Client, ClientResponse } from "../apiv2";
 import { appDistributionOrigin } from "../api";
 
@@ -301,7 +301,20 @@ export class AppDistributionClient {
       });
       return response.body;
     } catch (err: unknown) {
-      throw new FirebaseError(`Failed to create release test ${getErrMsg(err)}`);
+      const status = getErrStatus(err);
+      const msg = getErrMsg(err);
+      if (
+        status === 429 ||
+        msg.includes("429") ||
+        msg.includes("RESOURCE_EXHAUSTED") ||
+        msg.includes("QUOTA_EXCEEDED")
+      ) {
+        throw new FirebaseError(
+          `Quota exceeded: Failed to request test execution due to quota limits (429 RESOURCE_EXHAUSTED). Please check your project's App Testing quota usage in the Firebase console. Details: ${msg}`,
+          { status: 429, original: getError(err) },
+        );
+      }
+      throw new FirebaseError(`Failed to create release test: ${msg}`, { original: getError(err) });
     }
   }
 

From f193b6b5f0110660beaec7d19a177b0c6253ffc6 Mon Sep 17 00:00:00 2001
From: Lee Kellogg <lkellogg@google.com>
Date: Mon, 20 Jul 2026 19:32:03 +0000
Subject: [PATCH 2/2] refactor: remove redundant msg 429 string check per code
 review

---
 src/appdistribution/client.ts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/appdistribution/client.ts b/src/appdistribution/client.ts
index f91c08848be..bc7398abb50 100644
--- a/src/appdistribution/client.ts
+++ b/src/appdistribution/client.ts
@@ -305,7 +305,6 @@ export class AppDistributionClient {
       const msg = getErrMsg(err);
       if (
         status === 429 ||
-        msg.includes("429") ||
         msg.includes("RESOURCE_EXHAUSTED") ||
         msg.includes("QUOTA_EXCEEDED")
       ) {