How do I Implement Xamarin.Essentials in my Unit Testing? - unit-testing

Question

I want to execute a unit test on my GetById method that is using a local file storage as the source.
When I debug the test I get the following error in my service:
Xamarin.Essentials.NotImplementedInReferenceAssemblyException: 'This functionality is not implemented in the portable version of this assembly. You should reference the NuGet package from your main application project in order to reference the platform-specific implementation.'
I do not have this error when I run the application.
The service itself uses xamarin.essentials.
I've installed the N.P. in my test project as well.. Still no luck.
Below you can find my code and a screenshot of where the error takes place in my service.
Thanks in advance for the help!
using Imi.Project.Mobile.Domain.Models;
using Imi.Project.Mobile.Domain.Services.Interfaces;
using Imi.Project.Mobile.Domain.Services.Local;
using Moq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xunit;
using Newtonsoft.Json;
using System.IO;
using Xamarin.Essentials;
namespace Imi.Project.Mobile.Tests
{
public class LocalProductionOrderServiceTests
{
ProductionOrder[] testProductionOrders;
public LocalProductionOrderServiceTests()
{
testProductionOrders = ProductionOrdersTestData.testProductionOrders;
}
[Fact]
public async void GetById_Returns_ProductionOrderWithCorrectId()
{
//arrange
var testProductionOrder = testProductionOrders[0];
var mockService = new Mock<IProductionOrderService>();
mockService.Setup(service => service.GetById(testProductionOrder.Id)).Returns(Task.FromResult(testProductionOrder));
var productionOrderService = new LocalProductionOrderService();
//act
var productionOrderById = await productionOrderService.GetById(testProductionOrder.Id);
//assert
Assert.NotNull(productionOrderById);
Assert.Equal(testProductionOrder.Id.ToString(), productionOrderById.Id.ToString());
}
}
}