handle empty Insight responsed

js/models/blockchain/Insight.js

@@ -2,6 +2,7 @@
 
 var imports = require('soop').imports();
 var bitcore = require('bitcore');
+var preconditions = require('preconditions').singleton();
 
 var http;
 if (process.version) {
@@ -78,8 +79,10 @@ Insight.prototype._getOptions = function(method, path, data) {
 };
 
 Insight.prototype.getTransactions = function(addresses, cb) {
-  var self = this;
+  preconditions.shouldBeArray(addresses);
+  preconditions.shouldBeFunction(cb);
 
+  var self = this;
   if (!addresses || !addresses.length) return cb([]);
 
   var txids = [];
@@ -88,9 +91,11 @@ Insight.prototype.getTransactions = function(addresses, cb) {
   _asyncForEach(addresses, function(addr, callback) {
     var options = self._getOptions('GET', '/api/addr/' + addr);
     self._request(options, function(err, res) {
-      var txids_tmp = res.transactions;
-      for (var i = 0; i < txids_tmp.length; i++) {
-        txids.push(txids_tmp[i]);
+      if (res.transactions) {
+        var txids_tmp = res.transactions;
+        for (var i = 0; i < txids_tmp.length; i++) {
+          txids.push(txids_tmp[i]);
+        }
       }
       callback();
     });

test/test.blockchain.Insight.js

@@ -126,6 +126,8 @@ describe('Insight model', function() {
     });
   }
 
+
+
   it('#checkActivity for innactive addreses', function(done) {
     var w = new Insight();
     w.getTransactions = function(addresses, cb) {
@@ -176,4 +178,36 @@ describe('Insight model', function() {
       done();
     });
   });
+
+
+  it('should handle getTransaction errors', function(done) {
+
+    var http = require('http');
+    var request = {
+      statusCode: 200
+    };
+
+    request.on = function(event, cb) {
+      if (event === 'error') return;
+      if (event === 'data') return cb('{ "txid": "1234" }');
+      return cb();
+    };
+
+    var req = {};
+    req.write = function() {};
+    req.end = function() {};
+
+    sinon
+      .stub(http, 'request')
+      .returns(req)
+      .yields(request);
+
+    var w = new Insight();
+    w.getTransactions(['asdasd'], function(ret) {
+      ret.length.should.equal(0);
+      done();
+    });
+  });
+
+
 });