public void Add_ThrowsArgumentException_WhenCityWithSuchIdAlreadyExists()
{
// Arrange
var countries = new List <Country>
{
new Country {
Name = "TestCountry1", Id = 1
}
}.AsQueryable();
var cities = new List <City>
{
new City {
Name = "TestCity1", Id = 1, CountryId = 1
},
}.AsQueryable();
var mockDbCountrySet = new Mock <DbSet <Country> >();
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.Provider).Returns(countries.Provider);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.Expression).Returns(countries.Expression);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.ElementType).Returns(countries.ElementType);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.GetEnumerator()).Returns(countries.GetEnumerator());
var mockDbCitySet = new Mock <DbSet <City> >();
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.GetEnumerator()).Returns(cities.GetEnumerator());
var mockContext = new Mock <EazyCartContext>();
mockContext.Setup(c => c.Cities).Returns(mockDbCitySet.Object);
mockContext.Setup(c => c.SaveChanges()).Throws(new Exception());
mockContext.Setup(c => c.Countries).Returns(mockDbCountrySet.Object);
var cityBusiness = new CityBusiness(mockContext.Object);
int duplicateId = 1;
// Act & Assert
try
{
cityBusiness.Add("TestCity1", duplicateId, "TestCountry1");
cityBusiness.Add("TestCity2", duplicateId, "TestCountry1");
Assert.Fail("No exception was thrown");
}
catch (ArgumentException ex)
{
string expectedMessage = string.Format($"City with ID {duplicateId} already exists.");
Assert.AreEqual(expectedMessage, ex.Message, "Wrong exception was thrown.");
}
}
public void Add_ThrowsArgumentException_WhenCountryDoesNotExist()
{
// Arrange
var countries = new List <Country>
{
new Country {
Name = "TestCountry1", Id = 1
}
}.AsQueryable();
var cities = new List <City>
{
new City {
Name = "TestCity1", Id = 1, CountryId = 1
}
}.AsQueryable();
var mockDbCountrySet = new Mock <DbSet <Country> >();
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.Provider).Returns(countries.Provider);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.Expression).Returns(countries.Expression);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.ElementType).Returns(countries.ElementType);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.GetEnumerator()).Returns(countries.GetEnumerator());
var mockDbCitySet = new Mock <DbSet <City> >();
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.GetEnumerator()).Returns(cities.GetEnumerator());
var mockContext = new Mock <EazyCartContext>();
mockContext.Setup(c => c.Cities).Returns(mockDbCitySet.Object);
mockContext.Setup(c => c.Countries).Returns(mockDbCountrySet.Object);
var cityBusiness = new CityBusiness(mockContext.Object);
// Act & Assert
try
{
cityBusiness.Add("TestCity1", 1, "InvalidCountry");
Assert.Fail("No exception was thrown");
}
catch (ArgumentException ex)
{
string expectedMessage = string.Format("Such country does not exist.");
Assert.AreEqual(expectedMessage, ex.Message, "Wrong exception was thrown.");
}
}
public void Add_SuccessfullyAddsCity_WhenIdIsNotDuplicate()
{
// Arrange
var countries = new List <Country>
{
new Country {
Name = "TestCountry1", Id = 1
}
}.AsQueryable();
var cities = new List <City>().AsQueryable();
var mockDbCountrySet = new Mock <DbSet <Country> >();
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.Provider).Returns(countries.Provider);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.Expression).Returns(countries.Expression);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.ElementType).Returns(countries.ElementType);
mockDbCountrySet.As <IQueryable <Country> >().Setup(m => m.GetEnumerator()).Returns(countries.GetEnumerator());
var mockDbCitySet = new Mock <DbSet <City> >();
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType);
mockDbCitySet.As <IQueryable <City> >().Setup(m => m.GetEnumerator()).Returns(cities.GetEnumerator());
var mockContext = new Mock <EazyCartContext>();
mockContext.Setup(c => c.Cities).Returns(mockDbCitySet.Object);
mockContext.Setup(c => c.Countries).Returns(mockDbCountrySet.Object);
var cityBusiness = new CityBusiness(mockContext.Object);
// Act
cityBusiness.Add("TestCity1", 1, "TestCountry1");
// Assert
mockDbCitySet.Verify(m => m.Add(It.IsAny <City>()), Times.Once());
mockContext.Verify(m => m.SaveChanges(), Times.Once());
}
