Fix currency display send integration tests.

test/integration/lib/send-new-ui.js

@@ -101,7 +101,7 @@ async function runSendFlowTest(assert, done) {
   const sendAmountField = await queryAsync($, '.send-v2__form-row:eq(2)')
   sendAmountField.find('.currency-display')[0].click()
 
-  const sendAmountFieldInput = await findAsync(sendAmountField, 'input:text')
+  const sendAmountFieldInput = await findAsync(sendAmountField, '.currency-display__input')
   sendAmountFieldInput.val('5.1')
   reactTriggerChange(sendAmountField.find('input')[0])
 

ui/app/components/send/currency-display.js

@@ -49,7 +49,7 @@ CurrencyDisplay.prototype.getAmount = function (value) {
 }
 
 CurrencyDisplay.prototype.getValueToRender = function ({ selectedToken, conversionRate, value }) {
-  if (value === '0x0') return ''
+  if (value === '0x0') return '0'
   const { decimals, symbol } = selectedToken || {}
   const multiplier = Math.pow(10, Number(decimals || 0))