def METHOD_NAME(self):
    wizard = (
        self.env["split.contract"]
        .with_context(active_id=self.contract3.id)
        .create({})
    )
    contract_split_name = self.contract3._get_contract_split_name(wizard)
    self.assertEqual(contract_split_name, self.contract3.name)
    expected_result = {
        "main_contract_id": self.contract3.id,
        "partner_id": self.contract3.partner_id.id,
        "invoice_partner_id": self.contract3.invoice_partner_id.id,
        "split_line_ids": [
            (
                0,
                0,
                {
                    "original_contract_line_id": line.id,
                    "quantity_to_split": line.quantity,
                },
            )
            for line in self.contract3.contract_line_ids
        ],
    }
    self.assertEqual(self.contract3._get_default_split_values(), expected_result)