From 5ad83f6a9a5d8e2cac01ee9afdfe07d363151270 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrg=20Billeter?= <j@bitron.ch>
Date: Thu, 24 Sep 2020 14:54:18 +0200
Subject: _artifact.py: Assert that proto is available after `set_cached()`

---
 src/buildstream/_artifact.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/buildstream/_artifact.py b/src/buildstream/_artifact.py
index 048f09cc6..f6af294a4 100644
--- a/src/buildstream/_artifact.py
+++ b/src/buildstream/_artifact.py
@@ -462,6 +462,7 @@ class Artifact:
     #
     def set_cached(self):
         self._proto = self._load_proto()
+        assert self._proto
         self._cached = True
 
     #  load_proto()
-- 
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