Fail when new snapshots are added and not updated

See upstream: syrusakbary#73 If not configured to update the tests, fail when new tests are added.
memfault · Sep 12, 2022 · 35b4aea · 35b4aea
1 parent 48528b7
commit 35b4aea
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/snapshottest/module.py b/snapshottest/module.py
@@ -255,7 +255,10 @@ def assert_match(self, value, name=""):
             try:
                 prev_snapshot = self.module[self.test_name]
             except SnapshotNotFound:
-                self.store(value)  # first time this test has been seen
+                if self.update:
+                    self.store(value)  # first time this test has been seen
+                else:
+                    raise
             else:
                 try:
                     self.assert_value_matches_snapshot(value, prev_snapshot)