add test to ensure all of lots area assigned

products/cdbg/macros/test_sum.sql

@@ -0,0 +1,9 @@
+{% test sum_by(model, group_by, target_column, val, precision=4) %}
+
+SELECT
+    {{ group_by }}, sum({{ target_column }}) AS sum, array_agg( {{target_column }}) AS vals
+FROM {{ model }}
+GROUP BY {{ group_by }}
+HAVING round(sum({{ target_column }})::numeric, {{ precision }}) <> {{ val }}
+
+{% endtest %}

products/cdbg/models/intermediate/_intermediate_models.yml

@@ -33,7 +33,7 @@ models:
   - name: bbl
   - name: block_group_geoid
   - name: overlap_ratio
-  
+
 - name: int__lot_block_groups
   description: >-
     unique intersections of pluto lots and census block groups with proportion of lot in block group,
@@ -45,6 +45,12 @@ models:
   tests:
   - dbt_utils.unique_combination_of_columns:
       combination_of_columns: [bbl, block_group_geoid]
+  - sum_by:
+      group_by: bbl
+      target_column: overlap_ratio
+      val: 1
+      config:
+        severity: warn
 
 - name: int__tracts
   description: residential area and low-to-moderate income data aggregated by census tract