public void TestCuckooReset()
{
var f = new CuckooBloomFilter(100, 0.1);
for (int i = 0; i < 1000; i++)
{
f.Add(Encoding.ASCII.GetBytes(i.ToString()));
}
var resetFilter = f.Reset();
Assert.AreSame(f, resetFilter);
for (int i = 0; i < f.BucketCount(); i++)
{
for (uint j = 0; j < f.B; j++)
{
if (f.Buckets[i][j] != null)
{
Assert.Fail("Exected all buckets to be cleared");
}
}
}
Assert.AreEqual(0u, f.Count());
}
public void BenchmarkCuckooAdd()
{
var n = 100000u;
var f = new CuckooBloomFilter(n, 0.1);
var data = new byte[n][];
for (int i = 0; i < n; i++)
{
data[i] = Encoding.ASCII.GetBytes(i.ToString());
}
for (int i = 0; i < n; i++)
{
f.Add(data[i]);
}
}
public void TestCuckooCount()
{
var f = new CuckooBloomFilter(100, 0.1);
for (int i = 0; i < 10; i++)
{
f.Add(Encoding.ASCII.GetBytes(i.ToString()));
}
for (int i = 0; i < 5; i++)
{
f.TestAndRemove(Encoding.ASCII.GetBytes(i.ToString()));
}
var count = f.Count();
Assert.AreEqual(5u, count);
}
public void TestCuckooTestAndRemove()
{
var f = new CuckooBloomFilter(100, 0.1);
// 'a' is not in the filter.
if (f.Test(A_BYTES))
{
Assert.Fail("'a' should not be a member");
}
f.Add(A_BYTES);
// 'a' is now in the filter.
if (!f.TestAndRemove(A_BYTES))
{
Assert.Fail("'a' should be a member");
}
// 'a' is no longer in the filter.
if (f.Test(A_BYTES))
{
Assert.Fail("'a' should not be a member");
}
}
public void TestCuckooTestAndAdd()
{
var f = new CuckooBloomFilter(100, 0.1);
// 'a' is not in the filter.
if (f.Test(A_BYTES))
{
Assert.Fail("'a' should not be a member");
}
if (!f.Add(A_BYTES))
{
Assert.Fail("Should return true");
}
// 'a' is now in the filter.
if (!f.Test(A_BYTES))
{
Assert.Fail("'a' should be a member");
}
// 'a' is still in the filter.
var testAndAdd = f.TestAndAdd(A_BYTES);
if (!testAndAdd.WasAlreadyAMember)
{
Assert.Fail("'a' should be a member");
}
// Should not have added
Assert.IsFalse(testAndAdd.Added);
// 'b' is not in the filter.
testAndAdd = f.TestAndAdd(B_BYTES);
if (testAndAdd.WasAlreadyAMember)
{
Assert.Fail("'b' should not be a member");
}
// Should add
Assert.IsTrue(testAndAdd.Added);
// 'a' is still in the filter.
if (!f.Test(A_BYTES))
{
Assert.Fail("'a' should be a member");
}
// 'b' is now in the filter.
if (!f.Test(B_BYTES))
{
Assert.Fail("'b' should be a member");
}
// 'c' is not in the filter.
if (f.Test(C_BYTES))
{
Assert.Fail("'c' should not be a member");
}
for (int i = 0; i < 10000; i++)
{
f.Add(Encoding.ASCII.GetBytes(i.ToString()));
}
// Filter should be full.
testAndAdd = f.TestAndAdd(X_BYTES);
// Make sure not there
Assert.IsFalse(testAndAdd.WasAlreadyAMember);
// Make sure didn't add
Assert.IsFalse(testAndAdd.Added);
}