User is able to pay too much if they pay in partial payments

[briangrossman]

Steps to Reproduce

• Set yourself up to be able to pay for a Bootcamp
• Make a partial payment
• Begin another partial payment that's less than the price of the Bootcamp, but would put your total payment over the cost of the Bootcamp.
• Click to make the payment

Expected Behavior

• The page should warn the learner that they're paying too much and not let them make a payment

Actual Behavior

• The learner is able to make a payment

Stacktrace

Here's where the error message is generated to prevent the learner from paying to much:

bootcamp-ecommerce/static/js/components/PaymentDisplay.js

Lines 50 to 53 in ec814a0

	if (adjustedAmount > balance) {
	return {
	amount: "Payment amount must be less than the remaining balance"
	}

Related Issues

• PR: Fixed payment input validation #850

Screenshot or Screencast

PayTooMuch.mov

Here's the receipt for this purchase:
PayTooMuch.pdf