public void RollingTokenSetCountTest(int duplicateTokenThreshold)
{
var rollingTokenSet = new RollingTokenSet(new SumHashCalculator(duplicateTokenThreshold));
int hash = 0;
for (int i = 1; i < duplicateTokenThreshold * 2; i++)
{
Mock <TokenInfo> mockToken = new Mock <TokenInfo>(i);
mockToken.Setup(x => x.GetLocationEnvelope()).Returns(new LocationEnvelope());
mockToken.Setup(x => x.GetHashCode()).Returns(i);
(hash, _) = rollingTokenSet.Add(mockToken.Object);
int Fib(int n)
{
if (n == 0)
{
return(0);
}
return(n + Fib(n - 1));
}
if (i >= duplicateTokenThreshold)
{
Assert.IsTrue(rollingTokenSet.IsFull());
// E.g., Threshold = 3, i = 7, then expectedValue = 7+6+5+4+3+2+1 - (4+3+2+1) = 7+6+5
int expectedValue = Fib(i) - Fib(i - duplicateTokenThreshold);
Assert.AreEqual(expectedValue, hash);
}
else
{
Assert.IsFalse(rollingTokenSet.IsFull());
int expectedValue = Fib(i);
Assert.AreEqual(expectedValue, hash);
}
}
}
private void TestDictionary(DuplicateDetectorDictionary _library, int baseModulus, int modulus)
{
A.Data.AsParallel().ForAll(kvp =>
{
var rollingTokenSet = new RollingTokenSet(new RollingHashCalculator <TokenInfo>(100, baseModulus, modulus));
foreach (var list in kvp.Value)
{
(int hash, Evidence evidence) = rollingTokenSet.Add(new TokenInfo(list));
if (rollingTokenSet.IsFull())
{
_ = _library.TryAdd(hash, evidence);
}
}
});
}