functional_tests: add spend proof tests

tests/functional_tests/proofs.py

@@ -44,6 +44,7 @@ class ProofsTest():
         txid, tx_key, amount = self.transfer()
         self.check_tx_key(txid, tx_key, amount)
         self.check_tx_proof(txid, amount)
+        self.check_spend_proof(txid)
         self.check_reserve_proof()
 
     def reset(self):
@@ -217,6 +218,40 @@ class ProofsTest():
         except: ok = True
         assert ok or not res.good
 
+    def check_spend_proof(self, txid):
+        daemon = Daemon()
+
+        print('Checking spend proof')
+
+        self.wallet[0].refresh()
+        self.wallet[1].refresh()
+
+        res = self.wallet[0].get_spend_proof(txid, message = 'foo')
+        assert len(res.signature) > 0
+        signature = res.signature
+        res = self.wallet[1].check_spend_proof(txid, message = 'foo', signature = signature)
+        assert res.good
+
+        res = self.wallet[0].get_spend_proof(txid, message = 'foobar')
+        assert len(res.signature) > 0
+        signature2 = res.signature
+        res = self.wallet[1].check_spend_proof(txid, message = 'foobar', signature = signature2)
+        assert res.good
+
+        ok = False
+        try: res = self.wallet[1].check_spend_proof('0' * 64, message = 'foo', signature = signature)
+        except: ok = True
+        assert ok or not res.good
+
+        ok = False
+        try: res = self.wallet[1].check_spend_proof(txid, message = 'bar', signature = signature)
+        except: ok = True
+        assert ok or not res.good
+
+        ok = False
+        try: res = self.wallet[1].check_spend_proof(txid, message = 'foo', signature = signature2)
+        except: ok = True
+        assert ok or not res.good
 
     def check_reserve_proof(self):
         daemon = Daemon()

utils/python-rpc/framework/wallet.py

@@ -622,6 +622,31 @@ class Wallet(object):
         }
         return self.rpc.send_json_rpc_request(check_tx_proof)
 
+    def get_spend_proof(self, txid = '', message = ''):
+        get_spend_proof = {
+            'method': 'get_spend_proof',
+            'params' : {
+                'txid': txid,
+                'message': message,
+            },
+            'jsonrpc': '2.0',
+            'id': '0'
+        }
+        return self.rpc.send_json_rpc_request(get_spend_proof)
+
+    def check_spend_proof(self, txid = '', message = '', signature = ''):
+        check_spend_proof = {
+            'method': 'check_spend_proof',
+            'params' : {
+                'txid': txid,
+                'message': message,
+                'signature': signature,
+            },
+            'jsonrpc': '2.0',
+            'id': '0'
+        }
+        return self.rpc.send_json_rpc_request(check_spend_proof)
+
     def get_reserve_proof(self, all_ = True, account_index = 0, amount = 0, message = ''):
         get_reserve_proof = {
             'method': 'get_reserve_proof',