The WooCommerce unit tests started failing when running using WP nightly
with the following error:
```
Fatal error: require_once(): Failed opening required '/tmp/wordpress-tests-lib/src//wp-includes/class-phpmailer.php' (include_path='.:/home/travis/.phpenv/versions/7.4.2/share/pear') in /tmp/wordpress-tests-lib/includes/mock-mailer.php on line 2
```
https://travis-ci.org/woocommerce/woocommerce/jobs/646855363#L1955
This was happening because WP changed the syntax of the line where
ABSPATH is defined in the context of the unit tests
(https://core.trac.wordpress.org/changeset/47198/trunk/wp-tests-config-sample.php)
and we rely on this syntax to change ABSPATH when running
`tests/bin/install.sh`.
To fix this problem, this commit updates the sed command used to change
ABSPATH to work when both the old and new syntaxes are used. In the
future we might want to consider a more robust solution to the problem
of updating ABSPATH.
- PHP version check should not be needed anymore, as WC core requires PHP 7.0+
- The uninstallation/cleanup is not aborted if WC Admin can't be loaded
- Replaced init() call by drop_tables() call, as that's what probably needs to happen
This commit changes the condition in the if the statement that decides
whether or not to display the "Paid by customer" section in the order admin
page. Before it, this section was displayed for all orders that
contained one of the following statuses: 'processing', 'completed' or 'refunded'.
The problem with this approach is that offline payment gateways, like
'Cash on Delivery', set the order status to processing when the order is
placed but before the customer pays for it. So the "Paid by customer"
section was being displayed in some cases where the order was not
actually paid yet creating a confusing experience to store managers.
To fix this, this commit also checks for the presence of the
`_date_paid` order meta. If this order meta is present and the order
status corresponds to one of the three statuses listed above, it means that
the order has been paid and we can display the "Paid by customer"
section. If this order meta is not present, we don't display the "Paid
by customer" section.
Christopher Allford
Claudio Sanches
Rodrigo Primo
Peter Fabian
Vedanshu Jain
Renovate Bot
Matt Gibbs
gerdneuman