/// <summary>
/// Assert that the content of the <seealso cref="DocIdSet"/> is the same as the content of the <seealso cref="BitSet"/>.
/// </summary>
public virtual void AssertEquals(int numBits, BitArray ds1, T ds2)
{
// nextDoc
DocIdSetIterator it2 = ds2.GetIterator();
if (it2 == null)
{
Assert.AreEqual(-1, ds1.NextSetBit(0));
}
else
{
Assert.AreEqual(-1, it2.DocID());
for (int doc = ds1.NextSetBit(0); doc != -1; doc = ds1.NextSetBit(doc + 1))
{
Assert.AreEqual(doc, it2.NextDoc());
Assert.AreEqual(doc, it2.DocID());
}
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, it2.NextDoc());
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, it2.DocID());
}
// nextDoc / advance
it2 = ds2.GetIterator();
if (it2 == null)
{
Assert.AreEqual(-1, ds1.NextSetBit(0));
}
else
{
for (int doc = -1; doc != DocIdSetIterator.NO_MORE_DOCS;)
{
if (Random().NextBoolean())
{
doc = ds1.NextSetBit(doc + 1);
if (doc == -1)
{
doc = DocIdSetIterator.NO_MORE_DOCS;
}
Assert.AreEqual(doc, it2.NextDoc());
Assert.AreEqual(doc, it2.DocID());
}
else
{
int target = doc + 1 + Random().Next(Random().NextBoolean() ? 64 : Math.Max(numBits / 8, 1));
doc = ds1.NextSetBit(target);
if (doc == -1)
{
doc = DocIdSetIterator.NO_MORE_DOCS;
}
Assert.AreEqual(doc, it2.Advance(target));
Assert.AreEqual(doc, it2.DocID());
}
}
}
// bits()
Bits bits = ds2.GetBits();
if (bits != null)
{
// test consistency between bits and iterator
it2 = ds2.GetIterator();
for (int previousDoc = -1, doc = it2.NextDoc(); ; previousDoc = doc, doc = it2.NextDoc())
{
int max = doc == DocIdSetIterator.NO_MORE_DOCS ? bits.Length() : doc;
for (int i = previousDoc + 1; i < max; ++i)
{
Assert.AreEqual(false, bits.Get(i));
}
if (doc == DocIdSetIterator.NO_MORE_DOCS)
{
break;
}
Assert.AreEqual(true, bits.Get(doc));
}
}
}
