public void CanCoinJoin(PSBT a, PSBT b)
{
var result = a.CoinJoin(b);
Assert.Equal(result.inputs.Count, a.inputs.Count + b.inputs.Count);
Assert.Equal(result.outputs.Count, a.outputs.Count + b.outputs.Count);
Assert.Equal(result.tx.Inputs.Count, a.tx.Inputs.Count + b.tx.Inputs.Count);
Assert.Equal(result.tx.Outputs.Count, a.tx.Outputs.Count + b.tx.Outputs.Count);
// These will work in netcoreapp2.1, but not in net461 ... :(
// Assert.Subset<PSBTInput>(result.inputs.ToHashSet(), a.inputs.ToHashSet());
// Assert.Subset<PSBTInput>(result.inputs.ToHashSet(), b.inputs.ToHashSet());
// Assert.Subset<PSBTOutput>(result.outputs.ToHashSet(), a.outputs.ToHashSet());
// Assert.Subset<PSBTOutput>(result.outputs.ToHashSet(), b.outputs.ToHashSet());
// Assert.Subset<TxIn>(result.tx.Inputs.ToHashSet(), b.tx.Inputs.ToHashSet());
// Assert.Subset<TxOut>(result.tx.Outputs.ToHashSet(), b.tx.Outputs.ToHashSet());
}