Add missing test coverage for min_duration_ms

spec/lograge/active_record_log_subscriber_spec.rb

@@ -11,27 +11,49 @@
       stub_const('Rails', rails)
       stub_const('ActiveRecord::LogSubscriber', ar_log_subscriber)
       Lograge::Sql.extract_event = proc {}
+      Lograge::Sql.store.clear
     end
 
     context 'with keep_default_active_record_log not set' do
       before do
         allow(Rails).to receive_message_chain('application.config.lograge_sql.keep_default_active_record_log') { nil }
       end
+
       it 'adds duration to ActiveRecord::LogSubscriber runtime' do
         expect(ar_log_subscriber).to receive(:runtime=).with(120)
 
         log_subscriber.sql(event)
       end
     end
+
     context 'with keep_default_active_record_log set to true' do
       before do
         allow(Rails).to receive_message_chain('application.config.lograge_sql.keep_default_active_record_log') { true }
       end
+
       it 'does not add duration to ActiveRecord::LogSubscriber runtime' do
         expect(ar_log_subscriber).to_not receive(:runtime=)
 
         log_subscriber.sql(event)
       end
     end
+
+    context 'with custom min_duration_ms threshold' do
+      before do
+        # this is just to avoid setting too many "allows".
+        allow(Rails).to receive_message_chain('application.config.lograge_sql.keep_default_active_record_log') { true }
+        Lograge::Sql.min_duration_ms = 500
+      end
+
+      after do
+        # reset min_duration_ms after test
+        Lograge::Sql.min_duration_ms = 0
+      end
+
+      it 'does not store the event' do
+        log_subscriber.sql(event)
+        expect(Lograge::Sql.store[:lograge_sql_queries]).to be_nil
+      end
+    end
   end
 end