Currently the fetch code does not fail gracefully when retry limit is
exceeded, it just falls through the loop with no file, which ends up
hitting other errors.

Add a check for non-existing file, which indicates the retry limit was
exceeded.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 tests/functional/qemu_test/asset.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/functional/qemu_test/asset.py b/tests/functional/qemu_test/asset.py
index f0730695f09..27dd839e705 100644
--- a/tests/functional/qemu_test/asset.py
+++ b/tests/functional/qemu_test/asset.py
@@ -138,6 +138,9 @@ def fetch(self):
                 tmp_cache_file.unlink()
                 raise
 
+        if not os.path.exists(tmp_cache_file):
+            raise Exception("Retries exceeded downloading %s", self.url)
+
         try:
             # Set these just for informational purposes
             os.setxattr(str(tmp_cache_file), "user.qemu-asset-url",
-- 
2.47.1