message: add test for ETH fee params
diff: @@ -206,13 +206,14 @@ describe('Ethereum Hop Transactions', co(function *() {
  });
  };
  const nockFees = function() {
  - nock(bgUrl)
  + const scope = nock(bgUrl)
  .get('/api/v2/teth/tx/fee')
  .query(true)
  .reply(200, {
  gasLimitEstimate: gasLimitEstimate,
  feeEstimate: gasLimitEstimate * gasPrice,
  });
  + return scope;
  };
  const nockBuild = function(walletId) {
  @@ -245,7 +246,7 @@ describe('Ethereum Hop Transactions', co(function *() {
  let error = undefined;
  nockUserKey();
  - nockFees();
  + const feeScope = nockFees();
  nockBuild(ethWallet.id());
  try {
  const res = yield ethWallet.prebuildTransaction(buildParams);
  @@ -260,6 +261,11 @@ describe('Ethereum Hop Transactions', co(function *() {
  error = e.message;
  }
  should.not.exist(error);
  + feeScope.isDone().should.equal(true);
  + const feeReq = feeScope.interceptors[0].req;
  + feeReq.path.should.containEql('hop=true');
  + feeReq.path.should.containEql('recipient=' + finalRecipient);
  + feeReq.path.should.containEql('amount=' + sendAmount);
  }));
  }));
  }));
  