When we refund fee and some other line item whose value is more than fee in a single requst, value of line item will overwrite refund fee.
This is because where we check to make sure that we do not discount more than total possible value (to prevent negative total), we do not account for the fact that sometimes the cart could contain refund items. In those cases max_discount * -1 will always be larges then fees total.
This commit adds a check to make sure that max discount * -1 is indeed negative before overwriting fee total.
This commit fixes all 1533 PHPCS errors that PHPCBF can fix automatically in the tests/ directory. Before this change there was a total of 3106 PHPCS errors in the WooCommerce repository and now there is 1573 errors.
This commit adds four test cases (via a PHPUnit data provider) for the `wc_sanitize_order_id()` function.
While writing the tests, it was also discovered that the function was returning a *string*, not an integer as indicated by the DocBlock, so explicit type-casting was added.
[According to the WooCommerce wiki](https://github.com/woocommerce/woocommerce/wiki/Order-and-Order-Line-Item-Data) and `WC_REST_Orders_Controller`, WooCommerce stores country codes using the ISO 3166-1 alpha-2 (2 character) standard. However, the `WC_Tests_Order_Functions::test_wc_get_order_address_params()` test method was using 'USA' instead of 'US'.
Christopher Allford
vedanshujain
Rodrigo Primo
Steve Grunwell
Steve Grunwell