test for dust amount

lib/server.js

@@ -26,6 +26,7 @@ var TxProposal = require('./model/txproposal');
 var Notification = require('./model/Notification');
 
 var MINIMUM_FEE_SAT = 10000;
+var DUST_THRESHOLD = 5430;
 
 var initialized = false;
 var storage;
@@ -434,6 +435,8 @@ CopayServer.prototype._selectUtxos = function(txp, utxos) {
         return;
       } catch (ex) {
         //if (ex.name != 'bitcore.ErrorTransactionFeeError') {}
+        //if (ex.name != 'bitcore.ErrorTransactionDustOutputs') {}
+        console.log(ex);
       }
     }
     i++;
@@ -477,6 +480,9 @@ CopayServer.prototype.createTx = function(opts, cb) {
       if (toAddress.network != wallet.getNetworkName())
         return cb(new ClientError('INVALIDADDRESS', 'Incorrect address network'));
 
+      if (opts.amount < DUST_THRESHOLD)
+        return cb(new ClientError('DUSTAMOUNT', 'Amount below dust threshold'));
+
       self._getUtxos(function(err, utxos) {
         if (err) return cb(err);
 

test/integration.js

@@ -771,7 +771,18 @@ describe('Copay server', function() {
       });
     });
 
-    it.skip('should fail to create tx for dust amount', function(done) {});
+    it('should fail to create tx for dust amount', function(done) {
+      helpers.createUtxos(server, wallet, [1], function(utxos) {
+        helpers.stubBlockExplorer(server, utxos);
+        var txOpts = helpers.createProposalOpts('18PzpUFkFZE8zKWUPvfykkTxmB9oMR8qP7', 0.00000001, null, TestData.copayers[0].privKey);
+        server.createTx(txOpts, function(err, tx) {
+          should.exist(err);
+          err.code.should.equal('DUSTAMOUNT');
+          err.message.should.equal('Amount below dust threshold');
+          done();
+        });
+      });
+    });
 
     it('should create tx when there is a pending tx and enough UTXOs', function(done) {
       helpers.createUtxos(server, wallet, [10.1, 10.2, 10.3], function(utxos) {