package mysql import ( "testing" "time" "github.com/shopspring/decimal" "overnight-trading-bot/internal/domain" ) func TestMinuteCandleRowPreservesTimestamp(t *testing.T) { ts := time.Date(2026, 6, 8, 15, 25, 30, 123000000, time.UTC) row := minuteCandleRowFromDomain(domain.Candle{ InstrumentUID: "uid", TradeDate: ts, Open: decimal.NewFromInt(1), }) if !row.TradeDate.Equal(ts) { t.Fatalf("minute timestamp=%s, want %s", row.TradeDate, ts) } daily := candleRowFromDomain(domain.Candle{InstrumentUID: "uid", TradeDate: ts}) if daily.TradeDate.Equal(ts) || daily.TradeDate.Hour() != 0 || daily.TradeDate.Minute() != 0 { t.Fatalf("daily timestamp was not truncated to date: %s", daily.TradeDate) } }