package ledger

import (
	"testing"
	"time"

	"github.com/howeyc/ledger"
	"github.com/howeyc/ledger/decimal"
)

func TestDelta(t *testing.T) {
	d, err := time.Parse("2006-01-02", "2099-08-07")
	if err != nil {
		t.Fatal(err)
	}
	delta := newDelta(d, ledger.Account{
		Name:    "name",
		Balance: decimal.NewFromFloat(34.56),
		Comment: "comment",
	})

	if delta.Date != d {
		t.Error(delta.Date)
	}
	if delta.Account != "name" {
		t.Error(delta.Account)
	}
	if delta.Value != 34.56 {
		t.Error(delta.Value)
	}
	if delta.Currency != USD {
		t.Error(delta.Currency)
	}
	t.Log(delta)

	d2, _ := time.Parse("2006-01-02", "2099-09-08")
	delta2 := newDelta(d2, ledger.Account{
		Name:    "name",
		Balance: decimal.NewFromFloat(11.11),
		Comment: "comment",
	})

	combined := delta.Plus(delta2)
	if combined.Date != d2 {
		t.Error(combined.Date)
	}
	if combined.Account != "name" {
		t.Error(combined.Account)
	}
	if combined.Value != 45.67 {
		t.Error(combined.Value)
	}
	if combined.Currency != USD {
		t.Error(combined.Currency)
	}
}