Commit Graph

3 Commits

Author SHA1 Message Date
Nestor Soriano 1a68abbc28 Miscellaneous code hacking fixes:
- Fix how CodeHackerTestHook::executeBeforeTest parses the test name,
  to account for warnings and tests with data sets.

- CodeHackerTestHook now includes a executeAfterTest hook that
  disables the code hacker (needed to prevent it from inadvertently
  altering further tests). Also, clear_hacks is executed in
  executeBeforeTest for the same reason.

- CodeHacker gets restore, clear_hacks and is_enabled methods
  to support the changes in CodeHackerTestHook.

- FunctionsMockerHack fixed so that it doesn't modify strings
  that are class method definitions.

- Added the WC_Unit_Test_Case::file_copy method, it must be used
  instead of the PHP built-in "copy" in tests, otherwise tests
  that run with the code hacker active will fail.
  This is something to investigate.
2020-05-20 09:56:25 +02:00
Nestor Soriano 9a5b3b353d Add the @hack code annotation for tests.
Now @hack class and method annotations can be used to register
code hacks as an alternative to using before_ methods.
The syntax is /* @hack HackClassName param1 param2 */
where parameters will be passed to the class constructor.
If the class name ends with "Hack", then that suffix can be
omitted (e.g. "Foo" can be specified instead of "FooHack").
2020-05-20 09:56:25 +02:00
Nestor Soriano db58b51de3 Barebones implementation of a code hacker for unit tests.
The "code hacker" is a class that hooks on filesystem events
(using stream_wrapper_unregister) in order to allow for dynamically
modifying the content of PHP code files while they are loaded.
The code hacker class allows registering hacks, which are
functions that take source code as input and return the modified code.
A hack can be a standalone function or a class with a "hack" method.

A few hacks are provided off the shelf. One allows mocking standalone
PHP functions (WP, WOO or not), another one allows mocking static
methods, and there's the one that removes the "final" qualifier
from a class definition. This helps unit testing stuff that would
otherwise be quite hard to test.
2020-05-20 09:56:25 +02:00