Fix update in persistentstate

hexlib/db.py

@@ -139,8 +139,8 @@ class Table:
             except sqlite3.IntegrityError:
                 sql = "UPDATE %s SET (%s) = (%s) WHERE id=?" \
                       % (self._table, ",".join(value.keys()), ",".join("?" for _ in value.values()))
-                args = [key]
-                args.extend(_serialize(v) for v in value.values())
+                args = list(_serialize(v) for v in value.values())
+                args.append(key)
                 conn.execute(
                     sql,
                     args

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup
 
 setup(
     name="hexlib",
-    version="1.19",
+    version="1.20",
     description="Misc utility methods",
     author="simon987",
     author_email="me@simon987.net",

test/test_PersistantState.py

@@ -33,3 +33,17 @@ class TestPersistentState(TestCase):
         val["id"] = 1
 
         self.assertDictEqual(val, s["a"][1])
+
+    def test_update_partial(self):
+        s = PersistentState()
+
+        val = {"a": 1, "b": "2", "c": b'3', "d": 4.4}
+        s["a"][1] = val
+        s["a"][1] = {
+            "a": 2
+        }
+
+        val["a"] = 2
+        val["id"] = 1
+
+        self.assertDictEqual(val, s["a"][1])