Fix the issue where the exception was not caught when the purchase wa…

…s distributed. (#4886)

app/controllers/purchases_controller.rb

@@ -78,9 +78,14 @@ def update
 
   def destroy
     purchase = current_organization.purchases.find(params[:id])
-    PurchaseDestroyService.call(purchase)
+    begin
+      PurchaseDestroyService.call(purchase)
+    rescue => e
+      flash[:error] = e.message
+    else
+      flash[:notice] = "Purchase #{params[:id]} has been removed!"
+    end
 
-    flash[:notice] = "Purchase #{params[:id]} has been removed!"
     redirect_to purchases_path
   end
 

spec/system/purchase_system_spec.rb

@@ -301,14 +301,30 @@
       sign_in organization_admin
     end
 
-    it "allows deletion of a purchase" do
-      visit "#{subject}/#{purchase.id}"
-      expect(page).to have_link("Delete")
-      accept_confirm do
-        click_on "Delete"
+    context "When the purchase remains in storage location" do
+      it "allows deletion of a purchase" do
+        visit "#{subject}/#{purchase.id}"
+        expect(page).to have_link("Delete")
+        accept_confirm do
+          click_on "Delete"
+        end
+        expect(page).to have_content "Purchase #{purchase.id} has been removed!"
+        expect(page).to have_content "0 (Total)"
+      end
+    end
+
+    context "When the purchase has been distributed" do
+      it "delete a purchase should get an error" do
+        allow(PurchaseDestroyService).to receive(:call).with(purchase).and_raise(InventoryError)
+
+        visit "#{subject}/#{purchase.id}"
+        expect(page).to have_link("Delete")
+        accept_confirm do
+          click_on "Delete"
+        end
+
+        expect(page).to have_css(".alert.error.alert-danger")
       end
-      expect(page).to have_content "Purchase #{purchase.id} has been removed!"
-      expect(page).to have_content "0 (Total)"
     end
   end
 end