diff --git a/Tests/VTEX.Integration.Tests/OrderServiceTests.cs b/Tests/VTEX.Integration.Tests/OrderServiceTests.cs
new file mode 100644
index 00000000..457bc7fb
--- /dev/null
+++ b/Tests/VTEX.Integration.Tests/OrderServiceTests.cs
@@ -0,0 +1,29 @@
+using System.Threading.Tasks;
+using NSubstitute;
+using Xunit;
+
+public class OrderServiceTests
+{
+    private readonly IOrderRepository _orderRepository;
+    private readonly OrderService _orderService;
+
+    public OrderServiceTests()
+    {
+        _orderRepository = Substitute.For<IOrderRepository>();
+        _orderService = new OrderService(_orderRepository);
+    }
+
+    [Fact]
+    public async Task ShouldReturnOrder()
+    {
+        // Arrange
+        var fakeOrder = OrderGenerator.CreateFakeOrder();
+        _orderRepository.GetOrderAsync(Arg.Any<string>()).Returns(Task.FromResult(fakeOrder));
+
+        // Act
+        var result = await _orderService.GetOrderAsync(fakeOrder.OrderId);
+
+        // Assert
+        Assert.Equal(fakeOrder.OrderId, result.OrderId);
+    }
+}
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