From abaa93c1583800155093ab75f6c072c8d83200d0 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Thu, 8 Nov 2018 14:06:44 +0000
Subject: [PATCH] Add test to assert set_e2e_device_keys correctly returns
 False on no-op

---
 tests/storage/test_end_to_end_keys.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tests/storage/test_end_to_end_keys.py b/tests/storage/test_end_to_end_keys.py
index 8f0aaece4..b83f7336d 100644
--- a/tests/storage/test_end_to_end_keys.py
+++ b/tests/storage/test_end_to_end_keys.py
@@ -44,6 +44,21 @@ class EndToEndKeyStoreTestCase(tests.unittest.TestCase):
         dev = res["user"]["device"]
         self.assertDictContainsSubset({"keys": json, "device_display_name": None}, dev)
 
+    @defer.inlineCallbacks
+    def test_reupload_key(self):
+        now = 1470174257070
+        json = {"key": "value"}
+
+        yield self.store.store_device("user", "device", None)
+
+        changed = yield self.store.set_e2e_device_keys("user", "device", now, json)
+        self.assertTrue(changed)
+
+        # If we try to upload the same key then we should be told nothing
+        # changed
+        changed = yield self.store.set_e2e_device_keys("user", "device", now, json)
+        self.assertFalse(changed)
+
     @defer.inlineCallbacks
     def test_get_key_with_device_name(self):
         now = 1470174257070