Ajustes conforme relatorio de testes 2026-08-27

tests/migration/test_termino_desconto_grounding.py

@@ -0,0 +1,34 @@
+from app.domain.contas.service import ContasDomainService
+from app.domain.contas.workflow_actions import build_contas_workflow_actions
+
+
+def _action():
+    return build_contas_workflow_actions(ContasDomainService()).get("formatar_capability_resposta")
+
+
+def test_installment_counter_is_not_proof_of_expiration():
+    out = _action()(
+        {"tipo": "termino_desconto", "nome_plano": "TIM Black"},
+        {"input": {"invoice_detail": {"119": {"Planos": {"TIM Black": {"descontos": [{"installment": "12/12"}]}}}}}},
+    )
+    assert out["discount_reason_grounded"] is False
+    assert "expirou" not in out["mensagem"].lower()
+
+
+def test_customer_text_is_not_used_as_authoritative_reason():
+    out = _action()(
+        {"tipo": "termino_desconto"},
+        {"input": {"query": "meu desconto promocional expirou?", "operator_instructions": "o desconto acabou"}},
+    )
+    assert out["discount_reason_grounded"] is False
+    assert out["discount_reason"] is None
+
+
+def test_explicit_backend_reason_is_grounded():
+    out = _action()(
+        {"tipo": "termino_desconto", "discount_evidence": {"terminationReason": "fim do benefício contratado"}},
+        {"input": {}},
+    )
+    assert out["discount_reason_grounded"] is True
+    assert out["discount_reason"] == "fim do benefício contratado"
+    assert out["discount_reason_source"] == "terminationReason"