1 files changed, 38 insertions, 0 deletions
diff --git a/spec/lib/gitlab/database/partitioning/multi_database_partition_dropper_spec.rb b/spec/lib/gitlab/database/partitioning/multi_database_partition_dropper_spec.rb
new file mode 100644
index 00000000000..56d6ebb7aff
--- /dev/null
+++ b/spec/lib/gitlab/database/partitioning/multi_database_partition_dropper_spec.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Database::Partitioning::MultiDatabasePartitionDropper, '#drop_detached_partitions' do
+  subject(:drop_detached_partitions) { multi_db_dropper.drop_detached_partitions }
+
+  let(:multi_db_dropper) { described_class.new }
+
+  let(:connection_wrapper1) { double(scope: scope1) }
+  let(:connection_wrapper2) { double(scope: scope2) }
+
+  let(:scope1) { double(connection: connection1) }
+  let(:scope2) { double(connection: connection2) }
+
+  let(:connection1) { double('connection') }
+  let(:connection2) { double('connection') }
+
+  let(:dropper_class) { Gitlab::Database::Partitioning::DetachedPartitionDropper }
+  let(:dropper1) { double('partition dropper') }
+  let(:dropper2) { double('partition dropper') }
+
+  before do
+    allow(multi_db_dropper).to receive(:databases).and_return({ db1: connection_wrapper1, db2: connection_wrapper2 })
+  end
+
+  it 'drops detached partitions for each database' do
+    expect(Gitlab::Database::SharedModel).to receive(:using_connection).with(connection1).and_yield.ordered
+    expect(dropper_class).to receive(:new).and_return(dropper1).ordered
+    expect(dropper1).to receive(:perform)
+
+    expect(Gitlab::Database::SharedModel).to receive(:using_connection).with(connection2).and_yield.ordered
+    expect(dropper_class).to receive(:new).and_return(dropper2).ordered
+    expect(dropper2).to receive(:perform)
+
+    drop_detached_partitions
+  end
+end