Add benchmarking test for inject_enterprises

spec/performance/injection_helper_spec.rb

@@ -0,0 +1,29 @@
+require 'spec_helper'
+
+describe InjectionHelper, type: :helper do
+  let(:oc) { create(:simple_order_cycle) }
+  let(:relative_supplier) { create(:supplier_enterprise) }
+  let(:relative_distributor) { create(:distributor_enterprise) }
+
+  before do
+    50.times do
+      e = create(:enterprise)
+      oc.distributors << e
+      create(:enterprise_relationship, parent: e, child: relative_supplier)
+      create(:enterprise_relationship, parent: e, child: relative_distributor)
+    end
+  end
+
+  it "is performant in injecting enterprises" do
+    results = []
+    4.times do |i|
+      ActiveRecord::Base.connection.query_cache.clear
+      Rails.cache.clear
+      result = Benchmark.measure { helper.inject_enterprises }
+      results << result.total if i > 0
+      puts result
+    end
+
+    puts (results.sum / results.count * 1000).round 0
+  end
+end