1 files changed, 35 insertions, 0 deletions
diff --git a/spec/models/concerns/partitioned_table_spec.rb b/spec/models/concerns/partitioned_table_spec.rb
new file mode 100644
index 00000000000..3343b273ba2
--- /dev/null
+++ b/spec/models/concerns/partitioned_table_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe PartitionedTable do
+  describe '.partitioned_by' do
+    subject { my_class.partitioned_by(key, strategy: :monthly) }
+
+    let(:key) { :foo }
+
+    let(:my_class) do
+      Class.new do
+        include PartitionedTable
+      end
+    end
+
+    it 'assigns the MonthlyStrategy as the partitioning strategy' do
+      subject
+
+      expect(my_class.partitioning_strategy).to be_a(Gitlab::Database::Partitioning::MonthlyStrategy)
+    end
+
+    it 'passes the partitioning key to the strategy instance' do
+      subject
+
+      expect(my_class.partitioning_strategy.partitioning_key).to eq(key)
+    end
+
+    it 'registers itself with the PartitionCreator' do
+      expect(Gitlab::Database::Partitioning::PartitionCreator).to receive(:register).with(my_class)
+
+      subject
+    end
+  end
+end