From 06b0def4143f99289a37f3b08b86db55504a3019 Mon Sep 17 00:00:00 2001
From: Eric Seidel <eric@shorebird.dev>
Date: Mon, 2 Feb 2026 21:14:06 -0800
Subject: [PATCH] fix: throw on copy failure in _copyTemplateProject

---
 packages/shorebird_tests/test/shorebird_tests.dart | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/packages/shorebird_tests/test/shorebird_tests.dart b/packages/shorebird_tests/test/shorebird_tests.dart
index 4100c6c5aca50..409f3963e95e1 100644
--- a/packages/shorebird_tests/test/shorebird_tests.dart
+++ b/packages/shorebird_tests/test/shorebird_tests.dart
@@ -157,8 +157,9 @@ Future<Directory> _copyTemplateProject() async {
   );
 
   // Use platform copy to preserve the full directory tree efficiently.
+  final ProcessResult result;
   if (Platform.isWindows) {
-    await Process.run('xcopy', [
+    result = await Process.run('xcopy', [
       template.path,
       testDir.path,
       '/E',
@@ -166,7 +167,10 @@ Future<Directory> _copyTemplateProject() async {
       '/Q',
     ]);
   } else {
-    await Process.run('cp', ['-R', template.path, testDir.path]);
+    result = await Process.run('cp', ['-R', template.path, testDir.path]);
+  }
+  if (result.exitCode != 0) {
+    throw Exception('Failed to copy template project: ${result.stderr}');
   }
 
   return testDir;