public Property TripletIsPresentWhenTripletIsFound()
{
var chars = Enumerable.Range('0', 10).Concat(Enumerable.Range('a', 6)).Select(c => (char)c);
var dataGen = Gen.Elements(chars).ArrayOf().Select(cs => new string(cs));
var finder = new NletFinder(3);
var findings = dataGen.Select(data => new { data, found = finder.Find(data) }).Where(f => f.found.HasValue);
return(Prop.ForAll(findings.ToArbitrary(),
finding => finding.data.Contains(string.Join("", Enumerable.Repeat(finding.found.Value, 3)))));
}
public void NullIsReturnedWhenNoNletIsPresent(int n, string data)
{
var finder = new NletFinder(n);
Assert.Null(finder.Find(data));
}
public void NletIsFoundWhenPresent(int n, char?c, string data)
{
var finder = new NletFinder(n);
Assert.Equal(c, finder.Find(data));
}