functional_tests: add missing sweep_dust parameters, and test it

though not a very good test, but we don't have dust handy

tests/functional_tests/transfer.py

@@ -45,6 +45,7 @@ class TransferTest():
         self.transfer()
         self.check_get_bulk_payments()
         self.check_double_spend_detection()
+        self.sweep_dust()
         self.sweep_single()
         self.check_destinations()
 
@@ -583,6 +584,13 @@ class TransferTest():
         assert tx.in_pool
         assert tx.double_spend_seen
 
+    def sweep_dust(self):
+        print("Sweeping dust")
+        daemon = Daemon()
+        self.wallet[0].refresh()
+        res = self.wallet[0].sweep_dust()
+        assert not 'tx_hash_list' in res or len(res.tx_hash_list) == 0 # there's just one, but it cannot meet the fee
+
     def sweep_single(self):
         daemon = Daemon()
 

utils/python-rpc/framework/wallet.py

@@ -142,9 +142,15 @@ class Wallet(object):
         }
         return self.rpc.send_json_rpc_request(get_balance)
 
-    def sweep_dust(self):
+    def sweep_dust(self, get_tx_keys = True, do_not_relay = False, get_tx_hex = False, get_tx_metadata = False):
         sweep_dust = {
             'method': 'sweep_dust',
+            'params': {
+                'get_tx_keys': get_tx_keys,
+                'do_not_relay': do_not_relay,
+                'get_tx_hex': get_tx_hex,
+                'get_tx_metadata': get_tx_metadata,
+            },
             'jsonrpc': '2.0', 
             'id': '0'   
         }