eleventh version

cmd/backtest/main.go

@@ -4,6 +4,7 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"strings"
 
 	"github.com/shopspring/decimal"
 
@@ -72,6 +73,9 @@ func run() error {
 	if *useMinuteModel && len(minuteCandles) == 0 {
 		return fmt.Errorf("-minute-candles is required when -use-minute-model=true")
 	}
+	if err := validateMetadata(candles, metadata); err != nil {
+		return err
+	}
 	entry, err := decimal.NewFromString(*entrySlip)
 	if err != nil {
 		return fmt.Errorf("entry slippage: %w", err)
@@ -149,6 +153,20 @@ func run() error {
 	return nil
 }
 
+func validateMetadata(candles map[string][]domain.Candle, metadata map[string]backtest.InstrumentMetadata) error {
+	var missing []string
+	for instrumentUID := range candles {
+		meta := metadata[instrumentUID]
+		if meta.Lot <= 0 || !meta.MinPriceIncrement.IsPositive() {
+			missing = append(missing, instrumentUID)
+		}
+	}
+	if len(missing) > 0 {
+		return fmt.Errorf("missing lot/min_price_increment metadata for instruments: %s", strings.Join(missing, ","))
+	}
+	return nil
+}
+
 func mergeMetadata(dst, src map[string]backtest.InstrumentMetadata) {
 	for uid, meta := range src {
 		current := dst[uid]

cmd/backtest/main_test.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/shopspring/decimal"
+
+	"overnight-trading-bot/internal/backtest"
+	"overnight-trading-bot/internal/domain"
+)
+
+func TestValidateMetadataRejectsMissingLotOrTick(t *testing.T) {
+	candles := map[string][]domain.Candle{
+		"uid": {{InstrumentUID: "uid", TradeDate: time.Date(2026, 6, 8, 0, 0, 0, 0, time.UTC)}},
+	}
+	err := validateMetadata(candles, map[string]backtest.InstrumentMetadata{
+		"uid": {Lot: 10},
+	})
+	if err == nil || !strings.Contains(err.Error(), "missing lot/min_price_increment metadata") {
+		t.Fatalf("err=%v, want missing metadata error", err)
+	}
+}
+
+func TestValidateMetadataAcceptsCompleteMetadata(t *testing.T) {
+	candles := map[string][]domain.Candle{
+		"uid": {{InstrumentUID: "uid", TradeDate: time.Date(2026, 6, 8, 0, 0, 0, 0, time.UTC)}},
+	}
+	err := validateMetadata(candles, map[string]backtest.InstrumentMetadata{
+		"uid": {Lot: 10, MinPriceIncrement: decimal.RequireFromString("0.01")},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+}