private static bool ClearBitAndVerify(CompressedBitmapBuilder builder, SuperSlowUncompressedBitmap witness, int offset)
{
Console.WriteLine();
Console.WriteLine("Clear({0}):", offset);
bool actual = builder.Clear(offset);
bool expected = witness.Clear(offset);
Assert.That(actual, Is.EqualTo(expected), "Clear({0})", offset);
Verify(builder, witness);
return(actual);
}
public void Test_CompressedBitmapBuilder_Random_Sets_And_Clears()
{
// randomly alternate between setting and clearing random bits
int K = 20;
int S = 100;
int C = 100;
int N = 5 * 1000;
var bmp = CompressedBitmap.Empty;
var witness = new SuperSlowUncompressedBitmap();
var rnd = new Random(12345678);
for (int k = 0; k < K; k++)
{
Console.WriteLine("### Generation " + k);
// convert to builder
var builder = bmp.ToBuilder();
Verify(builder, witness);
// set S bits
for (int i = 0; i < S; i++)
{
int p = rnd.Next(N);
builder.Set(p);
witness.Set(p);
//SetBitAndVerify(builder, witness, p);
}
// clear C bits
for (int i = 0; i < C; i++)
{
int p = rnd.Next(N);
//ClearBitAndVerify(builder, witness, p);
builder.Clear(p);
witness.Clear(p);
}
// pack back to bitmap
bmp = builder.ToBitmap();
Console.WriteLine();
Console.WriteLine("> Result of gen #{0}: {1}", k, bmp.Dump());
Console.WriteLine("> " + bmp.ToSlice().ToHexaString());
Console.WriteLine();
}
}
