void PreviousReturnsCorrectPeriodOnEdge()
{
var sut = new PeriodCycler(new Period("201501"));
var expected = "201412";
Assert.Equal(expected, sut.Previous().Code);
}
void NextReturnsCorrectPeriod()
{
var sut = new PeriodCycler(new Period("201509"));
var expected = "201510";
Assert.Equal(expected, sut.Next().Code);
}
public AppContext(IUserProvider userProvider, IBookRepository books)
{
if (userProvider == null)
{
throw new ArgumentNullException(nameof(userProvider));
}
if (books == null)
{
throw new ArgumentNullException(nameof(books));
}
UserProvider = userProvider;
Period = new PeriodCycler();
Books = books;
Settings = new AppSettings();
}
