adding test for varchar length

Author: dantownsend

tests/columns/test_varchar.py

@@ -0,0 +1,14 @@
+from unittest import TestCase
+
+from piccolo.table import Table
+from piccolo.columns.column_types import Varchar
+
+
+class MyTable(Table):
+    name = Varchar(length=10)
+
+
+class TestVarchar(TestCase):
+    def test_length(self):
+        MyTable.create().run_sync()
+