package ledger

import (
	"testing"
)

func TestRegisterPredictContribution(t *testing.T) {
	input := map[string]Balances{
		"2001-01": Balances{"X": Balance{USD: 1}},
		"2001-02": Balances{"X": Balance{USD: 2}},
		"2001-03": Balances{"X": Balance{USD: 3}},
		"2001-04": Balances{"X": Balance{USD: 4}},
		"2001-05": Balances{"X": Balance{USD: 5}},
		"2001-06": Balances{"X": Balance{USD: 6}},
		"2001-07": Balances{"X": Balance{USD: 8}},
		"2001-08": Balances{"X": Balance{USD: 10}},
		"2001-09": Balances{"X": Balance{USD: 12}},
		"2001-10": Balances{"X": Balance{USD: 16}},
	}
	got, err := RegisterWithContributionPrediction(input, .12)
	if err != nil {
		t.Fatal(err)
	}
	if len(got) != len(input)+1 {
		t.Error(len(got))
	}
	if _, ok := got["2001-11"]; !ok {
		t.Error(ok)
	}
	t.Logf("%+v", got)
}