From 536c2cad814b8fa8cd346a3d7bd5f6b9889c4a6f Mon Sep 17 00:00:00 2001
From: Bu Sun Kim <8822365+busunkim96@users.noreply.github.com>
Date: Tue, 23 Mar 2021 13:16:34 -0600
Subject: fix: save empty IAM policy bindings (#155)

---
 google/api_core/iam.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'google')

diff --git a/google/api_core/iam.py b/google/api_core/iam.py
index f130936..d83cbf3 100644
--- a/google/api_core/iam.py
+++ b/google/api_core/iam.py
@@ -136,7 +136,10 @@ class Policy(collections_abc.MutableMapping):
         for b in self._bindings:
             if b["role"] == key:
                 return b["members"]
-        return set()
+        # binding does not yet exist, create one
+        new_binding = {"role": key, "members": set()}
+        self._bindings.append(new_binding)
+        return new_binding["members"]
 
     def __setitem__(self, key, value):
         self.__check_version__()
-- 
cgit v1.2.3