public void GetNameBySupplier_ReturnsACorrectCountry()
{
// Arrange
var countries = new List <Country>()
{
new Country()
{
Id = 1, Name = "TestCountry1"
},
new Country()
{
Id = 2, Name = "TestCountry2"
},
}.AsQueryable();
var cities = new List <City>()
{
new City()
{
Id = 1, Name = "TestCity1", CountryId = 1
},
new City()
{
Id = 2, Name = "TestCity2", CountryId = 2
},
}.AsQueryable();
var suppliers = new List <Supplier>()
{
new Supplier()
{
Id = 1, Name = "TestSupplier1", CityId = 1
},
new Supplier()
{
Id = 2, Name = "TestSupplier2", CityId = 2
},
}.AsQueryable();
var countryMockDbSet = new Mock <DbSet <Country> >();
countryMockDbSet.As <IQueryable <Country> >().Setup(m => m.Provider).Returns(countries.Provider);
countryMockDbSet.As <IQueryable <Country> >().Setup(m => m.Expression).Returns(countries.Expression);
countryMockDbSet.As <IQueryable <Country> >().Setup(m => m.ElementType).Returns(countries.ElementType);
countryMockDbSet.As <IQueryable <Country> >().Setup(m => m.GetEnumerator()).Returns(countries.GetEnumerator());
var cityMockDbSet = new Mock <DbSet <City> >();
cityMockDbSet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider);
cityMockDbSet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression);
cityMockDbSet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType);
cityMockDbSet.As <IQueryable <City> >().Setup(m => m.GetEnumerator()).Returns(cities.GetEnumerator());
var supplierMockDbSet = new Mock <DbSet <Supplier> >();
supplierMockDbSet.As <IQueryable <Supplier> >().Setup(m => m.Provider).Returns(suppliers.Provider);
supplierMockDbSet.As <IQueryable <Supplier> >().Setup(m => m.Expression).Returns(suppliers.Expression);
supplierMockDbSet.As <IQueryable <Supplier> >().Setup(m => m.ElementType).Returns(suppliers.ElementType);
supplierMockDbSet.As <IQueryable <Supplier> >().Setup(m => m.GetEnumerator()).Returns(suppliers.GetEnumerator());
var mockContext = new Mock <EazyCartContext>();
mockContext.Setup(c => c.Countries).Returns(countryMockDbSet.Object);
mockContext.Setup(c => c.Cities).Returns(cityMockDbSet.Object);
mockContext.Setup(c => c.Suppliers).Returns(supplierMockDbSet.Object);
var countryBusiness = new CountryBusiness(mockContext.Object);
// Act
string supplierName = "TestSupplier1";
string actualCountryName = countryBusiness.GetNameBySupplier(supplierName);
// Assert
string expectedCountryName = "TestCountry1";
Assert.AreEqual(expectedCountryName, actualCountryName, "Country names do not match.");
}