Support nested dictionaries (#93)

Signed-off-by: Yu Ishikawa <yu-iskw@users.noreply.github.com>

.github/workflows/unit-tests.yml

@@ -34,8 +34,6 @@ jobs:
             python-version: "3.9"
           - pip-requirements: requirements-1.4.txt
             python-version: "3.10"
-          - pip-requirements: requirements-1.4.txt
-            python-version: "3.11"
           - pip-requirements: requirements-1.5.txt
             python-version: "3.9"
           - pip-requirements: requirements-1.5.txt

integration_tests/macros/tests/comparisons/test_dict_equals.sql

@@ -61,6 +61,36 @@
     {{ exceptions.raise_compiler_error("Failed: Nested dictionaries with different values should not be equal") }}
   {% endif %}
 
+  {# Test nested dictionaries with additional nested levels #}
+  {% set nested_dict4 = {'a': 1, 'b': {'c': {'x': 10}, 'd': 3}} %}
+  {% set nested_dict5 = {'a': 1, 'b': {'c': {'x': 10}, 'd': 3}} %}
+  {% set result13 = dbt_unittest.dict_equals(nested_dict4, nested_dict5) %}
+  {% if not result13 %}
+    {{ exceptions.raise_compiler_error("Failed: Identical deeply nested dictionaries should be equal") }}
+  {% endif %}
+
+  {# Test nested dictionaries with differing nested levels #}
+  {% set nested_dict6 = {'a': 1, 'b': {'c': {'x': 11}, 'd': 3}} %}
+  {% set result14 = dbt_unittest.dict_equals(nested_dict4, nested_dict6) %}
+  {% if result14 %}
+    {{ exceptions.raise_compiler_error("Failed: Deeply nested dictionaries with different values should not be equal") }}
+  {% endif %}
+
+  {# Test nested dictionaries with lists as values #}
+  {% set nested_dict7 = {'a': 1, 'b': {'c': [1, 2, 3], 'd': 3}} %}
+  {% set nested_dict8 = {'a': 1, 'b': {'c': [1, 2, 3], 'd': 3}} %}
+  {% set result15 = dbt_unittest.dict_equals(nested_dict7, nested_dict8) %}
+  {% if not result15 %}
+    {{ exceptions.raise_compiler_error("Failed: Identical nested dictionaries with list values should be equal") }}
+  {% endif %}
+
+  {# Test nested dictionaries with lists containing different elements #}
+  {% set nested_dict9 = {'a': 1, 'b': {'c': [1, 2, 4], 'd': 3}} %}
+  {% set result16 = dbt_unittest.dict_equals(nested_dict7, nested_dict9) %}
+  {% if result16 %}
+    {{ exceptions.raise_compiler_error("Failed: Nested dictionaries with lists containing different elements should not be equal") }}
+  {% endif %}
+
   {# Test empty dictionary equality #}
   {% set empty_dict1 = {} %}
   {% set empty_dict2 = {} %}

macros/comparisons/dict_equals.sql

@@ -28,9 +28,13 @@
     {% endif %}
   {% endfor %}
 
-  {# Check values #}
+  {# Check values, recursively for nested dicts #}
   {% for key in actual_keys %}
-    {% if actual[key] != expected[key] %}
+    {% if actual[key] is mapping and expected[key] is mapping %}
+      {% if not dbt_unittest.dict_equals(actual[key], expected[key]) %}
+        {{ return(false) }}
+      {% endif %}
+    {% elif actual[key] != expected[key] %}
       {{ return(false) }}
     {% endif %}
   {% endfor %}