Add tests for formatting currencies of different formatters with and without needing decimal conversion

commerce_currency_format(...) in commerce.module has a typo. The if statement to check if conversion is required is not an equality operator, just assignment and hence always returns TRUE and you cannot disable conversion if you're passing in a decimal amount and not an "amount". The function needs to be corrected to read as below:

function commerce_currency_format($amount, $currency_code, $object = NULL, $convert = TRUE) {
  // First load the currency array.
  $currency = commerce_currency_load($currency_code);

  // Then convert the price amount to the currency's major unit decimal value.
  if ($convert == TRUE) { // !!! LINE WITH THE TYPO HERE !!!
    $amount = commerce_currency_amount_to_decimal($amount, $currency_code);
  }

Checked the latest dev version and it still seems to be there.

Thanks for all the awesome work guys. Love this module, blows Ubercart out of the water from a developer's perspective.