Fix JSON output

Author: dim

response_test.go

@@ -6,15 +6,22 @@ import (
 )
 
 func TestResponse_JSON(t *testing.T) {
+	bid := &Bid{}
+	bid.SetID("BIDID").SetImpID("IMPID").SetPrice(0.0)
+
+	sb := &Seatbid{}
+	sb.Bid = append(sb.Bid, *bid)
+
 	res := &Response{}
 	res.Id = new(string)
 	*res.Id = "RES_ID"
 	res.Cur = new(string)
 	*res.Cur = "USD"
+	res.Seatbid = append(res.Seatbid, *sb)
 
 	bytes, err := res.JSON()
 	assert.Nil(t, err)
-	assert.Equal(t, string(bytes), `{"id":"RES_ID","seatbid":null,"cur":"USD"}`)
+	assert.Equal(t, string(bytes), `{"id":"RES_ID","seatbid":[{"bid":[{"id":"BIDID","impid":"IMPID","price":0}]}],"cur":"USD"}`)
 }
 
 func TestResponse_Valid(t *testing.T) {

seatbid.go

@@ -11,10 +11,10 @@ import (
 // Group attribute can be used to specify if a seat is willing to accept any impressions that it can win (default) or if it is
 // only interested in winning any if it can win them all (i.e., all or nothing).
 type Seatbid struct {
-	Bid   []Bid      `json:"id"`             // Array of bid objects; each realtes to an imp, if exchange supported can have many bid objects.
-	Seat  *string    `json:"seat,omiempty"`  // ID of the bidder seat optional string ID of the bidder seat on whose behalf this bid is made.
-	Group *int       `json:"group,omiempty"` // '1' means impression must be won-lost as a group; default is '0'.
-	Ext   Extensions `json:"ext,omiempty"`
+	Bid   []Bid      `json:"bid"`             // Array of bid objects; each realtes to an imp, if exchange supported can have many bid objects.
+	Seat  *string    `json:"seat,omitempty"`  // ID of the bidder seat optional string ID of the bidder seat on whose behalf this bid is made.
+	Group *int       `json:"group,omitempty"` // '1' means impression must be won-lost as a group; default is '0'.
+	Ext   Extensions `json:"ext,omitempty"`
 }
 
 // Validation errors