tests: cleanup structure

tests/02_hierarchies.sql

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+-- ============================================================================
+-- MORBAC PostgreSQL Extension - Activity and View Hierarchies Tests
+-- ============================================================================
+-- This test file covers activity and view hierarchy tests including:
+-- - Activity hierarchy (e.g., write implies read)
+-- - View hierarchy (e.g., sensitive_data is a type of documents)
+-- - Effective activities and views
+-- - Permission inheritance through hierarchies
+--
+-- Prerequisites: Assumes 00_setup.sql has been run to set up base data
+-- ============================================================================
+
+\echo ''
+\echo '=== Activity and View Hierarchies ==='
+
+-- Define activity hierarchy: write implies read
+INSERT INTO morbac.activity_hierarchy (senior_activity, junior_activity) VALUES
+    ('write', 'read');
+
+-- Define view hierarchy: sensitive_data is a type of documents
+INSERT INTO morbac.view_hierarchy (senior_view, junior_view) VALUES
+    ('sensitive_data', 'documents');
+
+\echo 'Activities implied by write:'
+SELECT * FROM morbac.get_effective_activities('write');
+
+\echo 'Views for sensitive_data (should include documents):'
+SELECT * FROM morbac.get_effective_views('sensitive_data');
+
+\echo 'Bob has permission for read+documents, so write+documents should work (activity hierarchy):'
+SELECT
+    'write documents (via activity hierarchy)' as action,
+    morbac.is_allowed(
+        'bbbbbbbb-0000-0000-0000-000000000002'::uuid,
+        '11111111-1111-1111-1111-111111111111'::uuid,
+        'write',
+        'documents'
+    ) as allowed;
+
+\echo ''
+\echo '=== Activity and View Hierarchies Tests Completed ==='