public void GetAllCustomerFromDb()
{
// Arange
var userService = new UsersService(db);
var firstCustomer = new CustomerUser {
Id = "0", FullName = "BHTC"
};
var secondCustomer = new CustomerUser {
Id = "1", FullName = "FischerTech"
};
var thirdCustomer = new CustomerUser {
Id = "2", FullName = "InnoTape"
};
db.CustomerUser.AddRange(firstCustomer, secondCustomer, thirdCustomer);
db.SaveChanges();
// Act
var result = userService.AllCustomer();
// Assert
var expectedCount = 3;
Assert.Equal(expectedCount, result.Count());
}