/// <summary>
/// Populate the data grid with information sorted by cars' fuel economy in descending order
/// </summary>
private void PopulateDataGridViewSortCarsByFuelEconomyDescending()
{
dataGridView.Rows.Clear(); HideSpecificInfo();
CarBusiness carBusiness = new CarBusiness();
var carsList = carBusiness.SortCarsByFuelEconomyDescending();
DataPopulator(carsList);
dataGridView.Columns[8].Visible = true;
}
public void SortCarsByFuelEconomyDescending()
{
var data = new List <Car>
{
new Car {
Engine = new Engine {
EconomyPerHundredKm = 5m
}
},
new Car {
Engine = new Engine {
EconomyPerHundredKm = 6m
}
},
new Car {
Engine = new Engine {
EconomyPerHundredKm = 7m
}
}
}.AsQueryable();
var mockSet = new Mock <DbSet <Car> >();
mockSet.As <IQueryable <Car> >().Setup(m => m.Provider).Returns(data.Provider);
mockSet.As <IQueryable <Car> >().Setup(m => m.Expression).Returns(data.Expression);
mockSet.As <IQueryable <Car> >().Setup(m => m.ElementType).Returns(data.ElementType);
mockSet.As <IQueryable <Car> >().Setup(m => m.GetEnumerator()).Returns(data.GetEnumerator());
var mockContext = new Mock <CarDealershipContext>();
mockContext.Setup(m => m.Cars).Returns(mockSet.Object);
var service = new CarBusiness(mockContext.Object);
var SortedCars = service.SortCarsByFuelEconomyDescending();
Assert.AreEqual(7m, SortedCars[0].Engine.EconomyPerHundredKm);
Assert.AreEqual(6m, SortedCars[1].Engine.EconomyPerHundredKm);
Assert.AreEqual(5m, SortedCars[2].Engine.EconomyPerHundredKm);
}