找出运费检查里的 bug

import assert from "node:assert/strict";

function shippingFeeCents(subtotalCents) {
  return subtotalCents >= 5000 ? 0 : 500;
}

const sampledSubtotals = [6000, 7000];
for (const subtotalCents of sampledSubtotals) {
  const expected = subtotalCents >= 5000 ? 0 : 500;
  assert.equal(shippingFeeCents(subtotalCents), expected);
}