feat(fusion_accounting_reports): MV for per-account-per-month balances

Made-with: Cursor

fusion_accounting_reports/tests/__init__.py

@@ -16,3 +16,4 @@ from . import test_fusion_report_tools
 from . import test_engine_property
 from . import test_pnl_integration
 from . import test_bs_tb_integration
+from . import test_account_balance_mv

fusion_accounting_reports/tests/test_account_balance_mv.py

@@ -0,0 +1,20 @@
+"""Tests for fusion_account_balance MV."""
+
+from odoo.tests.common import TransactionCase, tagged
+
+
+@tagged('post_install', '-at_install')
+class TestAccountBalanceMV(TransactionCase):
+
+    def test_mv_exists_and_is_queryable(self):
+        # Force initial refresh, then make sure the model can read it.
+        self.env['fusion.account.balance.mv']._refresh(concurrently=False)
+        rows = self.env['fusion.account.balance.mv'].search([], limit=5)
+        self.assertIsNotNone(rows)
+
+    def test_mv_refresh_concurrent(self):
+        # Try concurrent refresh; should either succeed or fall back gracefully.
+        try:
+            self.env['fusion.account.balance.mv']._refresh(concurrently=True)
+        except Exception as e:
+            self.fail(f"MV refresh raised: {e}")