Fix Transaction().fromObject()

lib/transaction/transaction.js

@@ -349,7 +349,7 @@ Transaction.prototype.fromObject = function fromObject(arg) {
   var self = this;
   var transaction;
   if (arg instanceof Transaction) {
-    transaction = transaction.toObject();
+    transaction = arg.toObject();
   } else {
     transaction = arg;
   }

test/transaction/transaction.js

@@ -1235,6 +1235,40 @@ describe('Transaction', function() {
       });
     });
   });
+  describe('fromObject', function () {
+    it('Should copy transaction when passing instance of Transaction as arg', function() {
+      var tx = bitcore.Transaction({
+        hash: '132856bf03d6415562a556437d22ac63c37a4595fd986c796eb8e02dc031aa25',
+        version: 1,
+        inputs: [
+          {
+            prevTxId: 'e30ac3db24ef28500f023775d8eb06ad8a26241690080260308208a4020012a4',
+            outputIndex: 0,
+            sequenceNumber: 4294967294,
+            script: '473044022024dbcf41ccd4f3fe325bebb7a87d0bf359eefa03826482008e0fe7795586ad440220676f5f211ebbc311cfa631f14a8223a343cbadc6fa97d6d17f8d2531308b533201',
+            scriptString: '71 0x3044022024dbcf41ccd4f3fe325bebb7a87d0bf359eefa03826482008e0fe7795586ad440220676f5f211ebbc311cfa631f14a8223a343cbadc6fa97d6d17f8d2531308b533201',
+            output: {
+              satoshis: 5000000000,
+              script: '2103b1c65d65f1ff3fe145a4ede692460ae0606671d04e8449e99dd11c66ab55a7feac'
+            }
+          }
+        ],
+        outputs: [
+          {
+            satoshis: 3999999040,
+            script: '76a914fa1e0abfb8d26e494375f47e04b4883c44dd44d988ac'
+          },
+          {
+            satoshis: 1000000000,
+            script: '76a9140b2f0a0c31bfe0406b0ccc1381fdbe311946dadc88ac'
+          }
+        ],
+        nLockTime: 139
+      });
+      var copiedTransaction = bitcore.Transaction().fromObject(tx);
+      expect(copiedTransaction).to.be.an.instanceof(bitcore.Transaction);
+    });
+  });
 });