Update simple tests

     pathlib.Path("_test_data").mkdir()
 
 
-def test_json():
-    db = sqlyte.db("_test_data/1.db", sqlyte.Model("test", testing={"name": "TEXT"}))
+def test_simple_usage():
+    db = sqlyte.db("_test_data/1.db", sqlyte.Model("TestDB", testing={"name": "TEXT"}))
+    assert len(db.columns("testing")) == 1
     db.insert("testing", name="foo")
     db.insert("testing", name="bar")
+    assert len(db.select("testing")) == 2
+    db.update("testing", name="bat", where="name = ?", vals=["bar"])
+    db.delete("testing", where="name = ?", vals=["bat"])
+    assert len(db.select("testing")) == 1
 
 
-def test_transaction():
+def test_transactions():
     db = sqlyte.db("_test_data/2.db", sqlyte.Model("test", testing={"name": "TEXT"}))
     with db.conn:
         cursor = sqlyte.Cursor(db.conn.cursor())