functional_tests: add get_transfers test

tests/functional_tests/transfer.py

@@ -44,6 +44,7 @@ class TransferTest():
         self.mine()
         self.transfer()
         self.check_get_bulk_payments()
+        self.check_get_payments()
         self.check_double_spend_detection()
         self.sweep_dust()
         self.sweep_single()
@@ -524,6 +525,28 @@ class TransferTest():
         res = self.wallet[1].get_bulk_payments(["1111111122222222"])
         assert len(res.payments) >= 1 # we have one of these
 
+    def check_get_payments(self):
+        print('Checking get_payments')
+
+        daemon = Daemon()
+        res = daemon.get_info()
+        height = res.height
+
+        self.wallet[0].refresh()
+        self.wallet[1].refresh()
+
+        res = self.wallet[0].get_payments('1234500000012345abcde00000abcdeff1234500000012345abcde00000abcde')
+        assert 'payments' not in res or len(res.payments) == 0
+
+        res = self.wallet[1].get_payments('1234500000012345abcde00000abcdeff1234500000012345abcde00000abcde')
+        assert len(res.payments) >= 2
+
+        res = self.wallet[1].get_payments('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff')
+        assert 'payments' not in res or len(res.payments) == 0
+
+        res = self.wallet[1].get_payments(payment_id = '1111111122222222' + '0'*48)
+        assert len(res.payments) >= 1 # one tx to integrated address
+
     def check_double_spend_detection(self):
         print('Checking double spend detection')
         txes = [[None, None], [None, None]]

utils/python-rpc/framework/wallet.py

@@ -91,6 +91,17 @@ class Wallet(object):
         }
         return self.rpc.send_json_rpc_request(get_transfer_by_txid)
 
+    def get_payments(self, payment_id):
+        get_payments = {
+            'method': 'get_payments',
+            'params': {
+                'payment_id': payment_id,
+            },
+            'jsonrpc': '2.0',
+            'id': '0'
+        }
+        return self.rpc.send_json_rpc_request(get_payments)
+
     def get_bulk_payments(self, payment_ids = [], min_block_height = 0):
         get_bulk_payments = {
             'method': 'get_bulk_payments',