Merge branch 'sh-handle-nil-replication-lag' into 'master'

Fix background migrations failing with unused replication slot

Closes #63666

See merge request gitlab-org/gitlab-ce!30042

1 files changed, 8 insertions, 0 deletions

diff --git a/spec/models/postgresql/replication_slot_spec.rb b/spec/models/postgresql/replication_slot_spec.rb
index e100af7ddc7..95ae204a8a8 100644
--- a/spec/models/postgresql/replication_slot_spec.rb
+++ b/spec/models/postgresql/replication_slot_spec.rb
@@ -47,5 +47,13 @@ describe Postgresql::ReplicationSlot, :postgresql do
 
       expect(described_class.lag_too_great?).to eq(false)
     end
+
+    it 'returns false when there is a nil replication lag' do
+      expect(described_class)
+        .to receive(:pluck)
+        .and_return([0.megabytes, nil])
+
+      expect(described_class.lag_too_great?).to eq(false)
+    end
   end
 end