Detect subclasses of dict/tuple/list, fixes #87

tests/test_create.py

@@ -621,6 +621,7 @@ def test_create_index_if_not_exists(fresh_db):
         ["list with", "two items"],
         {"dictionary": "simple"},
         {"dictionary": {"nested": "complex"}},
+        collections.OrderedDict([("key1", {"nested": "complex"}), ("key2", "foo"),]),
         [{"list": "of"}, {"two": "dicts"}],
     ),
 )

tests/test_suggest_column_types.py

@@ -1,4 +1,5 @@
 import pytest
+from collections import OrderedDict
 from sqlite_utils.utils import suggest_column_types
 
 
@@ -11,6 +12,7 @@ from sqlite_utils.utils import suggest_column_types
         ([{"a": [1]}], {"a": str}),
         ([{"a": (1,)}], {"a": str}),
         ([{"a": {"b": 1}}], {"a": str}),
+        ([{"a": OrderedDict({"b": 1})}], {"a": str}),
         ([{"a": 1}, {"a": 1.1}], {"a": float}),
         ([{"a": b"b"}], {"a": bytes}),
     ],