public void ShouldReturnEmptyStringWhenBothLabelsAreEmpty()
{
var emptyLabels = new string[] { };
var emptyRequests = new string[] { };
var requests = new[] { "A" };
var labels = new[] { "ABC 10" };
Assert.Equal(string.Empty, BookSeller.BookSummary(labels, emptyRequests));
Assert.Equal(string.Empty, BookSeller.BookSummary(emptyLabels, requests));
Assert.Equal(string.Empty, BookSeller.BookSummary(emptyLabels, emptyRequests));
}
public void ShouldReturnSummationOfEachRequestedCategory(string[] labels, string[] requests, string expected)
{
Assert.Equal(expected, BookSeller.BookSummary(labels, requests));
}