diff --git a/spec/services/flowcommerce_spree/order_updater_spec.rb b/spec/services/flowcommerce_spree/order_updater_spec.rb
index e83b2e46..ecbf9b1b 100644
--- a/spec/services/flowcommerce_spree/order_updater_spec.rb
+++ b/spec/services/flowcommerce_spree/order_updater_spec.rb
@@ -5,8 +5,11 @@
 RSpec.describe FlowcommerceSpree::OrderUpdater do
   subject { FlowcommerceSpree::OrderUpdater }
 
-  let(:zone) { create(:germany_zone, :with_flow_data) }
-  let(:order) { create(:order_with_line_items, :with_flow_data) }
+  context 'when no order is passed' do
+    it 'raises exception' do
+      expect { subject.new }.to raise_error(ArgumentError, 'missing keyword: order')
+    end
+  end
 
   context 'when order is not present' do
     it 'raises exception' do
@@ -21,4 +24,50 @@
       expect { subject.new(order: order) }.to raise_error(ArgumentError, 'Experience not defined or not active')
     end
   end
+
+  context 'when the order has a flow experience defined' do
+    let(:zone) { create(:germany_zone, :with_flow_data) }
+    let(:order) { create(:order_with_line_items, :with_flow_data, zone: zone) }
+    let(:flowcommerce_client) { FlowcommerceSpree.client }
+
+    before { allow(FlowcommerceSpree).to receive(:client).and_return(flowcommerce_client) }
+
+    it 'initalizes successfully' do
+      instance = subject.new(order: order)
+
+      expect(instance.instance_variable_get(:@experience)).to eql(order.flow_io_experience_key)
+      expect(instance.instance_variable_get(:@order)).to eql(order)
+      expect(instance.instance_variable_get(:@client)).to eql(flowcommerce_client)
+    end
+
+    describe '#upsert_data' do
+      context 'if order status is `complete`' do
+        it 'does nothing' do
+          order.state = 'complete'
+          expect(order).not_to(receive(:create_proposed_shipments))
+          expect(order).not_to(receive(:charge_taxes))
+
+          subject.new(order: order).upsert_data
+          expect(order.complete?).to(be_truthy)
+        end
+      end
+
+      context 'if order status is not `complete`' do
+        before do
+          allow_any_instance_of(Io::Flow::V0::Clients::Orders)
+            .to(receive(:get_by_number)
+            .and_return({ submitted_at: Time.current, customer: { email: 'test@mejuri.com' } }))
+        end
+
+        it 'updates order to state `payment` and calls several methods to update the order related records' do
+          expect(order).to(receive(:create_proposed_shipments))
+          expect_any_instance_of(Spree::LineItem).to(receive(:store_ets))
+          expect(order).to(receive(:charge_taxes))
+
+          subject.new(order: order).upsert_data
+          expect(order.payment?).to(be_truthy)
+        end
+      end
+    end
+  end
 end