From 59203c63bb777a3bacec32fb8830fba33540e809 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 12 Jun 2024 07:35:29 +0200
Subject: Adding upstream version 127.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dom/l10n/DocumentL10n.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'dom/l10n/DocumentL10n.cpp')

diff --git a/dom/l10n/DocumentL10n.cpp b/dom/l10n/DocumentL10n.cpp
index c53b3aa0c7..9cf1d96c39 100644
--- a/dom/l10n/DocumentL10n.cpp
+++ b/dom/l10n/DocumentL10n.cpp
@@ -93,8 +93,15 @@ class L10nReadyHandler final : public PromiseNativeHandler {
      * rejection" warning, which is noisy and not-actionable.
      *
      * So instead, we just resolve and report errors.
+     *
+     * However, in automated tests we do reject so that errors with missing
+     * messages and resources can be caught.
      */
-    mPromise->MaybeResolveWithUndefined();
+    if (xpc::IsInAutomation()) {
+      mPromise->MaybeRejectWithClone(aCx, aValue);
+    } else {
+      mPromise->MaybeResolveWithUndefined();
+    }
   }
 
  private:
-- 
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