Add tests for not sending symbols on founding offers, credits and loans

Author: ezewer

test/lib/transports/rest-2-integration.js

@@ -111,10 +111,13 @@ describe('RESTv2 integration (mock server) tests', () => {
     ['positions'],
     ['fundingOffers', 'f_offers.sym', ['sym']],
     ['fundingOfferHistory', 'f_offer_hist.sym.start.end.limit', ['sym', 'start', 'end', 'limit']],
+    ['fundingOfferHistory', 'f_offer_hist.start.end.limit', ['', 'start', 'end', 'limit']],
     ['fundingLoans', 'f_loans.sym', ['sym']],
     ['fundingLoanHistory', 'f_loan_hist.sym.start.end.limit', ['sym', 'start', 'end', 'limit']],
+    ['fundingLoanHistory', 'f_loan_hist.start.end.limit', ['', 'start', 'end', 'limit']],
     ['fundingCredits', 'f_credits.sym', ['sym']],
     ['fundingCreditHistory', 'f_credit_hist.sym.start.end.limit', ['sym', 'start', 'end', 'limit']],
+    ['fundingCreditHistory', 'f_credit_hist.start.end.limit', ['', 'start', 'end', 'limit']],
     ['fundingTrades', 'f_trade_hist.sym.start.end.limit', ['sym', 'start', 'end', 'limit']],
     ['marginInfo', 'margin_info.k', ['k']],
     ['fundingInfo', 'f_info.k', ['k']],