def test_revert_deletes():
db = RefcountDB(EphemDB())
NODES = 60
t1 = pruning_trie.Trie(db)
db.ttl = NODES * 2
for i in range(NODES):
t1.update(to_string(i), to_string(i))
db.commit_refcount_changes(i)
db.cleanup(i)
x = t1.root_hash
for i in range(NODES):
t1.delete(to_string(i))
db.commit_refcount_changes(NODES + i)
db.cleanup(NODES + i)
for i in range(NODES * 2 - 1, NODES - 1, -1):
db.revert_refcount_changes(i)
for i in range(NODES * 2):
db.cleanup(NODES + i)
db.revert_refcount_changes(i)
t1.root_hash = x
assert t1.to_dict() == {to_string(i): to_string(i) for i in range(NODES)}
def test_revert_adds():
db = RefcountDB(EphemDB())
NODES = 60
t1 = pruning_trie.Trie(db)
t2 = pruning_trie.Trie(db)
db.ttl = NODES * 2
for i in range(NODES):
t1.update(to_string(i), to_string(i))
db.commit_refcount_changes(i)
db.cleanup(i)
for i in range(NODES):
t2.update(to_string(i), to_string(i))
db.commit_refcount_changes(NODES + i)
db.cleanup(NODES + i)
for i in range(NODES * 2 - 1, NODES - 1, -1):
db.revert_refcount_changes(i)
for i in range(NODES):
t1.delete(to_string(i))
db.commit_refcount_changes(NODES + i)
db.cleanup(NODES + i)
for i in range(NODES * 2):
db.cleanup(NODES * 2 + i)
assert len(db.kv) == 0