add length between test

macros/tests/length_between.sql

@@ -0,0 +1,16 @@
+-- Min and max length get included
+{% test length_between(model, column_name, min_length, max_length) %}
+
+    with
+        invalid_length as (
+            select {{ column_name }}
+            from {{ model }}
+            where
+                length({{ column_name }}) not between {{ min_length }}
+                and {{ max_length }}
+        )
+
+    select *
+    from invalid_length
+
+{% endtest %}