private void TestHashTransformHelper <T>(T[] data, uint[] results, NumberType type)
{
var builder = new ArrayDataViewBuilder(Env);
builder.AddColumn("F1", type, data);
var srcView = builder.GetDataView();
HashTransform.Column col = new HashTransform.Column();
col.Source = "F1";
col.HashBits = 5;
col.Seed = 42;
HashTransform.Arguments args = new HashTransform.Arguments();
args.Column = new HashTransform.Column[] { col };
var hashTransform = new HashTransform(Env, args, srcView);
using (var cursor = hashTransform.GetRowCursor(c => true))
{
var resultGetter = cursor.GetGetter <uint>(1);
uint resultRow = 0;
foreach (var r in results)
{
Assert.True(cursor.MoveNext());
resultGetter(ref resultRow);
Assert.True(resultRow == r);
}
}
}
private void TestHashTransformVectorHelper(ArrayDataViewBuilder builder, uint[][] results)
{
var srcView = builder.GetDataView();
HashTransform.Column col = new HashTransform.Column();
col.Source = "F1V";
col.HashBits = 5;
col.Seed = 42;
HashTransform.Arguments args = new HashTransform.Arguments();
args.Column = new HashTransform.Column[] { col };
var hashTransform = new HashTransform(Env, args, srcView);
using (var cursor = hashTransform.GetRowCursor(c => true))
{
var resultGetter = cursor.GetGetter <VBuffer <uint> >(1);
VBuffer <uint> resultRow = new VBuffer <uint>();
foreach (var r in results)
{
Assert.True(cursor.MoveNext());
resultGetter(ref resultRow);
Assert.True(resultRow.Length == r.Length);
for (int i = 0; i < r.Length; i++)
{
Assert.True(resultRow.GetItemOrDefault(i) == r[i]);
}
}
}
}
