Add Snowflake for assertions() and assertions_filter()

macros/_assertions_expression.sql

@@ -31,3 +31,33 @@ ARRAY_CONCAT(
 ) AS {{ column }}
 
 {%- endmacro %}
+
+
+{%- macro snowflake___assertions_expression(column, assertions) -%}
+
+ARRAY_CONSTRUCT_COMPACT(
+    {%- for assertion_id, assertion_config in assertions.items() %}
+
+    {%- set expression =
+        assertion_config.expression
+        if '\n' not in assertion_config.expression
+        else assertion_config.expression | indent(12) -%}
+
+    {%- set description= assertion_config.description -%}
+    {%- set null_as_exception =
+        'FALSE'
+        if (assertion_config.null_as_exception is not defined
+            or assertion_config.null_as_exception is true)
+        else 'TRUE' %}
+
+    /* {{ assertion_id }}: {{ description }} */
+    IFF(
+        COALESCE({{ expression }}, {{ null_as_exception }}) = FALSE,
+        '{{ assertion_id }}',
+        CAST(NULL AS STRING)
+    ),
+    {%- endfor %}
+    CAST(NULL AS STRING)
+) AS {{ column }}
+
+{%- endmacro %}

macros/assertions_filter.sql

@@ -64,3 +64,29 @@ EXISTS (
 {%- endif -%}
 
 {%- endmacro %}
+
+
+{%- macro snowflake__assertions_filter(column, exclude_list, include_list, reverse) -%}
+
+{#- Check if both exclude_list and include_list are provided -#}
+{%- if exclude_list is not none and include_list is not none -%}
+    {{
+        exceptions.raise_compiler_error(
+            'exclude_list or include_list must be provided. Not both.'
+            ~ 'Got (exclude_list: ' ~ exclude_list 
+            ~ ', include_list: ' ~ include_list ~ ')'
+        )
+    }}
+{%- endif -%}
+
+{#- Generate filtering expression  -#}
+{{- 'NOT ' if reverse else '' -}}
+{%- if include_list is not none -%}
+ARRAY_SIZE(ARRAY_INTERSECTION({{ column }},ARRAY_CONSTRUCT('{{ include_list | join("\', \'")}}'))) = 0
+{%- elif exclude_list is not none -%}
+ARRAY_SIZE(ARRAY_EXCEPT({{ column }},ARRAY_CONSTRUCT('{{ exclude_list | join("\', \'")}}'))) = 0
+{%- else -%}
+ARRAY_SIZE({{ column }}) = 0
+{%- endif -%}
+
+{%- endmacro %}