fix tests

Author: taobig

v2/margin_service_test.go

@@ -103,16 +103,20 @@ func (s *marginTestSuite) TestBorrowRepayBorrow() {
 	_type := MarginAccountBorrow
 	s.assertReq(func(r *request) {
 		e := newSignedRequest().setFormParams(params{
-			"asset":  asset,
-			"amount": amount,
-			"type":   string(_type),
+			"asset":      asset,
+			"amount":     amount,
+			"isIsolated": false,
+			"symbol":     "",
+			"type":       string(_type),
 		})
 		s.assertRequestEqual(e, r)
 	})
 	res, err := s.client.NewMarginBorrowRepayService().
 		Asset(asset).
 		Amount(amount).
 		Type(_type).
+		IsIsolated(false). // can be omitted when IsIsolated is false
+		Symbol("").        // can be omitted when IsIsolated is false
 		Do(newContext())
 	s.r().NoError(err)
 	e := &TransactionResponse{