// Cities with correct id thus does exist
public void TestCityExists()
{
var cities = new List <City>
{
new City {
Id = 1, Name = "Richmond", Description = "Small"
},
new City {
Id = 2, Name = "Vancouver", Description = "Big"
}
}.AsQueryable();
var mockSet = new Mock <DbSet <City> >();
mockSet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider);
mockSet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression);
mockSet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType);
var mockContext = new Mock <CityInfoContext>();
mockContext.Setup(m => m.Cities).Returns(mockSet.Object);
var repo = new CityInfoRepository(mockContext.Object);
Assert.True(repo.CityExists(1));
}
// No cities thus does not exist
public void TestCityExistsNoCities()
{
var cities = new List <City> {
}.AsQueryable();
var mockSet = new Mock <DbSet <City> >();
mockSet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider);
mockSet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression);
mockSet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType);
var mockContext = new Mock <CityInfoContext>();
mockContext.Setup(m => m.Cities).Returns(mockSet.Object);
var repo = new CityInfoRepository(mockContext.Object);
Assert.False(repo.CityExists(1));
}