Add test code for no-history sync

jmclient/jmclient/blockchaininterface.py

@@ -456,6 +456,17 @@ def post_sync_wallet_callback(self, wallet):
         # avoidance of address reuse
         wallet.disable_new_scripts = True
 
+    ##these two functions are hacks to make the test code be able to use the
+    ##same helper functions, perhaps it would be nicer to create mixin classes
+    ##and use multiple inheritance to make the code more OOP, but its not
+    ##worth it now
+    def grab_coins(self, receiving_addr, amt=50):
+        RegtestBitcoinCoreInterface.grab_coins(self, receiving_addr, amt)
+
+    def tick_forward_chain(self, n):
+        self.destn_addr = self.rpc("getnewaddress", [])
+        RegtestBitcoinCoreInterface.tick_forward_chain(self, n)
+
 # class for regtest chain access
 # running on local daemon. Only
 # to be instantiated after network is up

jmclient/test/test_core_nohistory_sync.py

@@ -0,0 +1,51 @@
+#! /usr/bin/env python
+from __future__ import (absolute_import, division,
+                        print_function, unicode_literals)
+from builtins import * # noqa: F401
+'''Wallet functionality tests.'''
+
+"""BitcoinCoreNoHistoryInterface functionality tests."""
+
+from commontest import create_wallet_for_sync
+
+import pytest
+from jmbase import get_log
+from jmclient import load_program_config
+
+log = get_log()
+
+def test_fast_sync_unavailable(setup_sync):
+    load_program_config(bs="bitcoin-rpc-no-history")
+    wallet_service = create_wallet_for_sync([0, 0, 0, 0, 0],
+        ['test_fast_sync_unavailable'])
+    with pytest.raises(RuntimeError) as e_info:
+        wallet_service.sync_wallet(fast=True)
+
+@pytest.mark.parametrize('internal', (False, True))
+def test_sync(setup_sync, internal):
+    load_program_config(bs="bitcoin-rpc-no-history")
+    used_count = [1, 3, 6, 2, 23]
+    wallet_service = create_wallet_for_sync(used_count, ['test_sync'],
+        populate_internal=internal)
+    ##the gap limit should be not zero before sync
+    assert wallet_service.gap_limit > 0
+    for md in range(len(used_count)):
+        ##obtaining an address should be possible without error before sync
+        wallet_service.get_new_script(md, internal)
+
+    wallet_service.sync_wallet(fast=False)
+
+    for md in range(len(used_count)):
+        ##plus one to take into account the one new script obtained above
+        assert used_count[md] + 1 == wallet_service.get_next_unused_index(md,
+            internal)
+    #gap limit is zero after sync
+    assert wallet_service.gap_limit == 0
+    #obtaining an address leads to an error after sync
+    with pytest.raises(RuntimeError) as e_info:
+        wallet_service.get_new_script(0, internal)
+
+
+@pytest.fixture(scope='module')
+def setup_sync():
+    pass