[FEATURE] Add tests and support for ledger for requestBookOffers

src/js/ripple/remote.js

@@ -1476,10 +1476,12 @@ Remote.prototype.requestTxHistory = function(start, callback) {
 /**
  * Request book_offers
  *
- * @param {Object} gets
+ * @param {Object} options - taker_options or can be an options object with the following properties
- * @param {Object} pays
+ *   @param {Object} options.gets - taker_options
- * @param {String} taker
+ *   @param {Object} options.pays - taker_pays
- * @param [Function] calback
+ *   @param {String} [options.taker]
+ *   @param {String} [options.ledger]
+ * @param [Function] callback
  * @return {Request}
  */
 
@@ -1488,6 +1490,7 @@ Remote.prototype.requestBookOffers = function(gets, pays, taker, callback) {
 
   if (gets.hasOwnProperty('gets') || gets.hasOwnProperty('taker_gets')) {
     var options = gets;
+    var ledger;
     // This would mutate the `lastArg` in `arguments` to be `null` and is
     // redundant. Once upon a time, some awkward code was written f(g, null,
     // null, cb) ...
@@ -1495,6 +1498,7 @@ Remote.prototype.requestBookOffers = function(gets, pays, taker, callback) {
     taker = options.taker;
     pays = options.pays || options.taker_pays;
     gets = options.gets || options.taker_gets;
+    ledger = options.ledger;
   }
 
   if (typeof lastArg === 'function') {
@@ -1521,8 +1525,9 @@ Remote.prototype.requestBookOffers = function(gets, pays, taker, callback) {
 
   request.message.taker = taker ? taker : UInt160.ACCOUNT_ONE;
 
-  request.callback(callback);
+  request.ledgerSelect(ledger);
 
+  request.callback(callback);
   return request;
 };
 

test/remote-test.js

@@ -2,6 +2,8 @@ var assert = require('assert');
 var Remote = require('ripple-lib').Remote;
 var Server = require('ripple-lib').Server;
 var Request = require('ripple-lib').Request;
+var UInt160 = require('ripple-lib').UInt160;
+var Currency = require('ripple-lib').Currency;
 
 var options, remote, callback, database, tx;
 
@@ -434,6 +436,43 @@ describe('Remote', function () {
     assert(request.requested);
   });
 
+  it('requestBookOffers, ledger', function() {
+    var callback = function() {};
+    var remote = new Remote({
+      servers: [ { host: 's-west.ripple.com', port: 443, secure: true } ]
+    });
+    var request = remote.requestBookOffers(
+      {
+        gets: {
+          currency: 'USD',
+          issuer: ADDRESS
+        },
+        pays: {
+          currency: 'XRP'
+        },
+        ledger: LEDGER_HASH
+      },
+      callback
+    );
+
+    assert.deepEqual(request.message, {
+      command: 'book_offers',
+      id: undefined,
+      taker_gets: {
+        currency: Currency.from_human('USD').to_hex(),
+        issuer: ADDRESS
+      },
+      taker_pays: {
+        currency: '0000000000000000000000000000000000000000'
+      },
+      taker: UInt160.ACCOUNT_ONE,
+      ledger_hash: LEDGER_HASH
+    });
+
+    assert(request.requested);
+  });
+
+
   it('create remote and get pending transactions', function() {
     before(function() {
       tx =  [{