PHP - Alternatives to runkit for intercepting method calls
I have some very test-unfriendly code (to say the least) that I need to test. Refactoring unfortunately is not an option. I have to test the code as it is, without the possibility of changing it.
To do that, I was thinking of intercepting function calls and dynamically chang开发者_Go百科e what they do so I can run my tests, as I need some functions and methods to return known values, and I need others that make requests, connect to the database, etc, to stop doing that and return what I need them to return. Is there any way to do this without runkit_method_redefine()
, which is preferably not "EXPERIMENTAL" and still maintained? Maybe an alternative to runkit? Maybe a better way?
Edit: will use PHPUnit's test doubles and PHP 5.3.2's features for making private methods accessible, if I need that functionality.
Note: the Test-Helper extension is superseded by https://github.com/krakjoe/uopz
PHPUnit's Test Helper extension (PECL) allows redefiniton/intercepting/stubbing/mocking of hardcoded dependencies with your own implementations:
protected function setUp()
{
$this->getMock(
'Bar', /* name of class to mock */
array('doSomethingElse'), /* list of methods to mock */
array(), /* constructor arguments */
'BarMock' /* name for mocked class */
);
set_new_overload(array($this, 'newCallback'));
}
It also allows intercepting the exit statement and instance creation:
- https://github.com/sebastianbergmann/php-test-helpers
For stubbing and mocking methods you simply use PHPUnit's regular mocking framework. See
- http://www.phpunit.de/manual/current/en/test-doubles.html
You can also use Mockery with PHPUnit:
- https://github.com/padraic/mockery
Another option would be to use http://antecedent.github.io/patchwork
Patchwork is a PHP library that makes it possible to redefine user-defined functions and methods at runtime, loosely replicating the functionality
runkit_function_redefine
in pure PHP 5.3 code, which, among other things, enables you to replace static and private methods with test doubles.
The runkit extension is a perfect solution for your needs. It is proven by years of my personal experience and described in many presentations and articles authored by different authors in the internet.
I can assure you that the runkit_method_redefine function as well as the whole runkit extension is not experimental anymore (documentation hosted on the php.net is obsolete). The up-to-date runkit extension can be found on http://github.com/zenovich/runkit
Sincerely, Dmitry Zenovich
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