feat(aduptech): check target currency in Builder

adapters/aduptech/aduptech.go

@@ -9,10 +9,11 @@ import (
 	"github.com/prebid/openrtb/v20/openrtb2"
 	"github.com/prebid/prebid-server/v3/adapters"
 	"github.com/prebid/prebid-server/v3/config"
-	"github.com/prebid/prebid-server/v3/currency"
+	prebidcurrency "github.com/prebid/prebid-server/v3/currency"
 	"github.com/prebid/prebid-server/v3/errortypes"
 	"github.com/prebid/prebid-server/v3/openrtb_ext"
 	"github.com/prebid/prebid-server/v3/util/jsonutil"
+	"golang.org/x/text/currency"
 )
 
 type adapter struct {
@@ -34,6 +35,12 @@ func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server co
 		return nil, errors.New("invalid extra info: TargetCurrency is empty, pls check")
 	}
 
+	parsedCurrency, err := currency.ParseISO(extraInfo.TargetCurrency)
+	if err != nil {
+		return nil, fmt.Errorf("invalid extra info: invalid TargetCurrency %s, pls check", extraInfo.TargetCurrency)
+	}
+	extraInfo.TargetCurrency = parsedCurrency.String()
+
 	bidder := &adapter{
 		endpoint:  config.Endpoint,
 		extraInfo: extraInfo,
@@ -81,7 +88,7 @@ func (a *adapter) convertCurrency(value float64, cur string, reqInfo *adapters.E
 	convertedValue, err := reqInfo.ConvertCurrency(value, cur, a.extraInfo.TargetCurrency)
 
 	if err != nil {
-		var convErr currency.ConversionNotFoundError
+		var convErr prebidcurrency.ConversionNotFoundError
 		if !errors.As(err, &convErr) {
 			return 0, err
 		}

adapters/aduptech/aduptech_test.go

@@ -46,3 +46,20 @@ func TestInvalidExtraAdapterInfo(t *testing.T) {
 
 	assert.EqualError(t, buildErr, "invalid extra info: TargetCurrency is empty, pls check")
 }
+
+func TestInvalidTargetCurrency(t *testing.T) {
+	_, buildErr := Builder(
+		openrtb_ext.BidderAdUpTech,
+		config.Adapter{
+			Endpoint:         "https://example.com/rtb/bid",
+			ExtraAdapterInfo: `{"target_currency": "INVALID"}`,
+		},
+		config.Server{
+			ExternalUrl: "http://hosturl.com",
+			GvlID:       1,
+			DataCenter:  "2",
+		},
+	)
+
+	assert.EqualError(t, buildErr, "invalid extra info: invalid TargetCurrency INVALID, pls check")
+}