public async Task When__UserStore_Add_To_Role__Expect__User_Added_To_Role()
{
string roleName = "Report User";
int userId = 1;
ApplicationUser user = await _userStore.FindByIdAsync(userId).ConfigureAwait(false);
Assert.That(user, Is.Not.Null, "User not found");
await _userStore.AddToRoleAsync(user, roleName).ConfigureAwait(false);
_context.SaveChanges();
IList <string> roles = await _userStore.GetRolesAsync(user).ConfigureAwait(false);
string savedRole = roles.Where(p => p == roleName).FirstOrDefault();
Assert.That(savedRole, Is.Not.Null, "User not added to role");
}