Fix specs to contemplate XHR requests and more coverage

spec/controllers/spree/admin/line_items_controller_spec.rb

@@ -143,14 +143,15 @@ describe Spree::Admin::LineItemsController do
     end
   end
 
-  describe "#update" do
+  describe '#update' do
     let(:supplier) { create(:supplier_enterprise) }
     let(:distributor1) { create(:distributor_enterprise) }
     let(:coordinator) { create(:distributor_enterprise) }
     let(:order_cycle) { create(:simple_order_cycle, coordinator: coordinator) }
     let!(:order1) { FactoryGirl.create(:order, order_cycle: order_cycle, state: 'complete', completed_at: Time.zone.now, distributor: distributor1, billing_address: FactoryGirl.create(:address) ) }
     let!(:line_item1) { FactoryGirl.create(:line_item, order: order1, product: FactoryGirl.create(:product, supplier: supplier)) }
-    let(:params) { { format: :json, id: line_item1.id, order_id: order1.number, line_item: { quantity: 3, final_weight_volume: 3000, price: 3.00 } } }
+    let(:line_item_params) { { quantity: 3, final_weight_volume: 3000, price: 3.00 } }
+    let(:params) { { id: line_item1.id, order_id: order1.number, line_item: line_item_params } }
 
     context "as an enterprise user" do
       context "producer enterprise" do
@@ -172,7 +173,7 @@ describe Spree::Admin::LineItemsController do
         end
 
         it "updates the line item" do
-          spree_put :update, params
+          xhr :put, :update, params
           line_item1.reload
           expect(line_item1.quantity).to eq 3
           expect(line_item1.final_weight_volume).to eq 3000
@@ -180,20 +181,44 @@ describe Spree::Admin::LineItemsController do
         end
 
         it "returns an empty JSON response" do
-          spree_put :update, params.merge(format: :json)
+          xhr :put, :update, params
           expect(response.body).to eq ' '
         end
 
-        it "returns an HTML response with the order form" do
-          spree_put :update, params.merge(format: :html)
-          expect(response.body).to match /admin_order_form_fields/
+        it 'returns a 204 response' do
+          xhr :put, :update, params
+          expect(response.status).to eq 204
+        end
+
+        context 'when the line item params are not correct' do
+          let(:line_item_params) { { price: 'hola' } }
+          let(:errors) { { 'price' => ['is not a number'] } }
+
+          it 'returns a JSON with the errors' do
+            xhr :put, :update, params
+            expect(JSON.parse(response.body)['errors']).to eq(errors)
+          end
+
+          it 'returns a 412 response' do
+            xhr :put, :update, params
+            expect(response.status).to eq 412
+          end
+        end
+
+        context 'when the request is HTML' do
+          before { params.merge(format: :html) }
+
+          it 'returns an HTML response with the order form' do
+            spree_put :update, params
+            expect(response.body).to match /admin_order_form_fields/
+          end
         end
       end
 
       context "hub enterprise" do
         before do
           controller.stub spree_current_user: distributor1.owner
-          spree_put :update, params
+          xhr :put, :update, params
         end
 
         it "updates the line item" do
@@ -206,7 +231,7 @@ describe Spree::Admin::LineItemsController do
     end
   end
 
-  describe "#destroy" do
+  describe '#destroy' do
     render_views
 
     let(:supplier) { create(:supplier_enterprise) }
@@ -215,26 +240,35 @@ describe Spree::Admin::LineItemsController do
     let(:order_cycle) { create(:simple_order_cycle, coordinator: coordinator) }
     let!(:order1) { FactoryGirl.create(:order, order_cycle: order_cycle, state: 'complete', completed_at: Time.zone.now, distributor: distributor1, billing_address: FactoryGirl.create(:address) ) }
     let!(:line_item1) { FactoryGirl.create(:line_item, order: order1, product: FactoryGirl.create(:product, supplier: supplier)) }
-    let(:params) { { format: :json, id: line_item1.id, order_id: order1.number } }
+    let(:params) { { id: line_item1.id, order_id: order1.number } }
 
     before do
       controller.stub spree_current_user: coordinator.owner
     end
 
-    it "destroys the line item" do
+    it 'destroys the line item' do
       expect {
-        spree_delete :destroy, params
+        xhr :delete, :destroy, params
       }.to change { Spree::LineItem.where(id: line_item1).count }.from(1).to(0)
     end
 
-    it "returns an empty JSON response" do
-      spree_delete :destroy, params.merge(format: :json)
+    it 'returns an empty JSON response' do
+      xhr :delete, :destroy, params
       expect(response.body).to eq ' '
     end
 
-    it "returns an HTML response with the order form" do
-      spree_delete :destroy, params.merge(format: :html)
-      expect(response.body).to match /admin_order_form_fields/
+    it 'returns a 204 response' do
+      xhr :delete, :destroy, params
+      expect(response.status).to eq 204
+    end
+
+    context 'when the request is HTML' do
+      before { params.merge(format: :html) }
+
+      it 'returns an HTML response with the order form' do
+        spree_delete :destroy, params
+        expect(response.body).to match /admin_order_form_fields/
+      end
     end
   end
 end