Update dust amount

docs/transaction.md

@@ -161,7 +161,7 @@ These are the current default values in the bitcore library involved on these ch
 
 * `Transaction.FEE_PER_KB`: `10000` (satoshis per kilobyte)
 * `Transaction.FEE_SECURITY_MARGIN`: `15`
-* `Transaction.DUST_AMOUNT`: `5460` (satoshis)
+* `Transaction.DUST_AMOUNT`: `546` (satoshis)
 
 ## Fee calculation
 

lib/transaction/transaction.js

@@ -63,7 +63,7 @@ var DEFAULT_NLOCKTIME = 0;
 var DEFAULT_SEQNUMBER = 0xFFFFFFFF;
 
 // Minimum amount for an output for it not to be considered a dust output
-Transaction.DUST_AMOUNT = 5460;
+Transaction.DUST_AMOUNT = 546;
 
 // Margin of error to allow fees in the vecinity of the expected value but doesn't allow a big difference
 Transaction.FEE_SECURITY_MARGIN = 15;

test/transaction/transaction.js

@@ -322,13 +322,23 @@ describe('Transaction', function() {
     it('fails if a dust output is created', function() {
       var transaction = new Transaction()
         .from(simpleUtxoWith1BTC)
-        .to(toAddress, 1)
+        .to(toAddress, 545)
         .change(changeAddress)
         .sign(privateKey);
       expect(function() {
         return transaction.serialize();
       }).to.throw(errors.Transaction.DustOutputs);
     });
+    it('doesn\'t fail if a dust output is not dust', function() {
+      var transaction = new Transaction()
+        .from(simpleUtxoWith1BTC)
+        .to(toAddress, 546)
+        .change(changeAddress)
+        .sign(privateKey);
+      expect(function() {
+        return transaction.serialize();
+      }).to.not.throw(errors.Transaction.DustOutputs);
+    });
     it('doesn\'t fail if a dust output is an op_return', function() {
       var transaction = new Transaction()
         .from(simpleUtxoWith1BTC)