The unit testing bootstrap loads and initializes WooCommerce, this
loads a bunch of code files that can't then be hacked in the test hooks.
A workaround is provided in this commit for the case of hacking
static methods. A new StaticWrapper class is created that allows
defining mock methods after the code file has been loaded.
This is applied to all classes from a fixed list in the bootstrap,
before WooCommerce is initialized. The list should be kept up to date
with the list of classes that require such workaround.
The root namespace of Core is Automattic\WooCommerce, but both the blocks and wc-admin plugins exist in this namespace. In an effort to prevent possible conflicts, we should not allow for overlap in our repository. The rationale behind doing this as opposed to renaming our root namespace feels reasonable. In the case of Blocks, all of the tooling is already set up in their repository, so all blocks should go there anyway. In the case of WC-Admin, we shouldn't be refactoring admin classes, as that would duplicate work done to revamp them entirely.