invoice-total-fixer

To fix invoice totals by applying tax, edit the logic to enforce the formula subtotal + subtotal * taxRate. Inspect the implementation and tests in the sandbox repository before making changes to ensure accurate tax calculation adjustments.

Your invoice total fails npm tests because the calculation logic does not apply the correct formula subtotal + subtotal * taxRate. You must update the implementation to add the tax amount to the subtotal when a taxRate is provided.

The correct formula for calculating an invoice total with a tax rate is subtotal + subtotal * taxRate. This ensures the tax amount is accurately applied to the subtotal and added to the final total during sandbox testing.

To validate changes to invoice tax calculation logic, run npm test in your sandbox repository after editing the implementation. This executes the test suite to verify that your adjusted invoice total equals the subtotal plus the calculated tax.

Yes, you can verify tax logic in sandbox quickstart invoices by enforcing the correct total formula. Inspect the existing tests, adjust the invoice total calculation, and run npm test to confirm the tax adjustments are valid.

Yes, you need to inspect implementation tests before editing invoice total logic. Reviewing the test suite helps you understand the expected subtotal and taxRate behavior and ensures your changes pass validation when you run npm test.