feat(fusion_accounting_reports): commentary_prompt for LLM-generated narratives

Made-with: Cursor

fusion_accounting_reports/tests/__init__.py

@@ -6,4 +6,5 @@ from . import test_drill_down_resolver
 from . import test_fusion_report_engine
 from . import test_seeded_reports
 from . import test_anomaly_detection
+from . import test_commentary_prompt
 from . import test_commentary_generator

fusion_accounting_reports/tests/test_commentary_prompt.py

@@ -0,0 +1,50 @@
+"""Tests for commentary_prompt module."""
+
+from odoo.tests.common import TransactionCase, tagged
+from odoo.addons.fusion_accounting_reports.services.commentary_prompt import (
+    SYSTEM_PROMPT, build_prompt,
+)
+
+
+@tagged('post_install', '-at_install')
+class TestCommentaryPrompt(TransactionCase):
+
+    def test_system_prompt_requires_json(self):
+        self.assertIn('JSON', SYSTEM_PROMPT)
+        self.assertIn('"summary"', SYSTEM_PROMPT)
+        self.assertIn('"highlights"', SYSTEM_PROMPT)
+
+    def test_build_prompt_returns_tuple(self):
+        report = {'report_name': 'P&L', 'period': {'label': 'Apr 2026',
+                                                   'date_from': '2026-04-01',
+                                                   'date_to': '2026-04-30'},
+                  'rows': []}
+        result = build_prompt(report, [])
+        self.assertEqual(len(result), 2)
+        self.assertIn('REPORT', result[1])
+        self.assertIn('Apr 2026', result[1])
+
+    def test_user_prompt_includes_rows(self):
+        report = {
+            'report_name': 'P&L',
+            'period': {'label': 'X', 'date_from': 'a', 'date_to': 'b'},
+            'rows': [
+                {'id': 'r1', 'label': 'Revenue', 'amount': 100000.50},
+                {'id': 'r2', 'label': 'Net Income', 'amount': 25000, 'is_subtotal': True},
+            ],
+        }
+        _, user = build_prompt(report, [])
+        self.assertIn('Revenue', user)
+        self.assertIn('100,000.50', user)
+        self.assertIn('SUBTOTAL', user)
+
+    def test_user_prompt_includes_anomalies(self):
+        report = {'report_name': 'X', 'period': {'label': 'X', 'date_from': '', 'date_to': ''}, 'rows': []}
+        anomalies = [
+            {'label': 'Revenue', 'direction': 'increase', 'variance_pct': 25.0,
+             'variance_amount': 5000, 'severity': 'medium'},
+        ]
+        _, user = build_prompt(report, anomalies)
+        self.assertIn('ANOMALIES', user)
+        self.assertIn('Revenue', user)
+        self.assertIn('25.0%', user)