use example imports for tests and eventual demo

test/test_db.py

@@ -1,32 +1,19 @@
-import sys
-from typing import List
-
 import pytest
 from tinydb.storages import MemoryStorage
 
+from grung import examples
 from grung.db import GrungDB
-from grung.types import Field, Record
-
-
-class User(Record):
-    _fields = [Field("name"), Field("email", unique=True)]
-
-
-class Group(Record):
-    _fields = [Field("name", unique=True), Field("users", List[User])]
 
 
 @pytest.fixture
 def db():
-    _db = GrungDB.with_schema(sys.modules[__name__], storage=MemoryStorage)
-    _db.create_table(User)
-    _db.create_table(Group)
+    _db = GrungDB.with_schema(examples, storage=MemoryStorage)
     yield _db
     print(_db)
 
 
 def test_crud(db):
-    user = User(name="john", email="john@foo")
+    user = examples.User(name="john", email="john@foo")
     assert user.uid
     assert user._metadata.fields["uid"].unique
 
@@ -48,7 +35,7 @@ def test_crud(db):
     assert before_update != after_update
 
     # pointers
-    players = Group(name="players", users=[john_something])
+    players = examples.Group(name="players", users=[john_something])
     players = db.save(players)
     players.users[0]["name"] = "fnord"
     db.save(players)