README

Introduction

BypassFinals effortlessly strips away final and readonly keywords from your PHP code on-the-fly. This handy tool makes it possible to mock final methods and classes, seamlessly integrating with popular testing frameworks like PHPUnit, Mockery, or Nette Tester.

Installation

The easiest way to install BypassFinals is via Composer. Just run the following command in your project directory:

composer require dg/bypass-finals --dev

Usage

To get BypassFinals up and running, just invoke:

DG\BypassFinals::enable();

Make sure to call this method early, preferably immediately after your vendor/autoload.php is loaded, to ensure all classes are processed before they are used.

Note that final internal PHP classes like Closure are not mockable.

To avoid removing readonly keywords, you can disable this feature by passing a parameter:

DG\BypassFinals::enable(bypassReadOnly: false);

To narrow down the application scope of BypassFinals, use a whitelist to specify directories or files:

DG\BypassFinals::allowPaths([
	'*/Nette/*',
]);

Or, conversely, you can specify which paths not to search using DG\BypassFinals::denyPaths(). This gives you finer control and can solve issues with certain frameworks and libraries.

Enhance performance by caching transformed files. Make sure the cache directory already exists:

DG\BypassFinals::setCacheDirectory(__DIR__ . '/cache');

For integration with PHPUnit 10 or newer, simply add BypassFinals as an extension in your PHPUnit XML configuration file:

<extensions>
	<bootstrap class="DG\BypassFinals\PHPUnitExtension"/>
</extensions>

Optionally you can configure BypassFinals in your phpunit.xml file:

<extensions>
	<bootstrap class="DG\BypassFinals\PHPUnitExtension">
		<parameter name="bypassFinal" value="true"/>
		<parameter name="bypassReadOnly" value="false"/>
		<parameter name="cacheDirectory" value="./cache"/>
	</bootstrap>
</extensions>

Troubleshooting

Class is still final after enabling BypassFinals

BypassFinals can only strip the final keyword from files loaded after enable() is called. If a class is loaded before that — for example via a files entry in a package's autoload configuration, which Composer loads during require 'vendor/autoload.php' — the class will remain final.

To handle this, include src/bootstrap.php before vendor/autoload.php in your test bootstrap file:

// tests/bootstrap.php
require __DIR__ . '/../vendor/dg/bypass-finals/src/bootstrap.php';
require __DIR__ . '/../vendor/autoload.php';

This activates the stream wrapper early enough to intercept every file loaded during autoloading.

If you encounter other issues with BypassFinals not working as expected, you can use the debugInfo() method to gain insights into its internal state. Calling this method will output valuable information to help diagnose the problem:

DG\BypassFinals::debugInfo();

This will display:

• Configuration: Whether BypassFinals is enabled for removing final and/or readonly keywords.
• BypassFinals startup call stack: The sequence of function calls that led to DG\BypassFinals::enable(), helping you verify when and where BypassFinals was started.
• Classes loaded before BypassFinals startup: A list of classes that were already loaded in PHP before BypassFinals was started. Keywords in these classes cannot be removed, as the classes are already defined. This can help identify potential conflicts or reasons why certain classes aren't being modified.
• Modified files: A list of the files that BypassFinals has successfully modified. If the file containing a class you expect to be modified isn't in this list, it suggests a problem with path matching or the timing of the BypassFinals startup.

By examining this output, you can better understand how BypassFinals is configured and whether it's operating on the intended files and classes. This can significantly speed up the process of identifying and resolving issues.

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