public void Ad_Index_Contains_All_Products()
{
// Arrange - create the mock repository
Mock <IAdvertisementRepository> mock = new Mock <IAdvertisementRepository>();
mock.Setup(m => m.Advertisements).Returns((new Advertisement[]
{
new Advertisement {
AdvertisementID = 1, CompanyName = "A1"
},
new Advertisement {
AdvertisementID = 2, CompanyName = "A2"
},
new Advertisement {
AdvertisementID = 3, CompanyName = "A3"
}
}).AsQueryable <Advertisement>());
// Arrange - create a controller
AdminController target = new AdminController(null, mock.Object);
// Action
Advertisement[] result = GetViewModel <IEnumerable <Advertisement> >(target.AdIndex())?.ToArray();
// Assert
Assert.Equal(3, result.Count());
Assert.Equal("A1", result[0].CompanyName);
Assert.Equal("A2", result[1].CompanyName);
Assert.Equal("A3", result[2].CompanyName);
}