function DrupalKernelTest::testInitializeSettings

Tests the reregistration of autoloaders if APCu available.

This test runs in a separate process since it registers class loaders and results in statics being set.

@runInSeparateProcess @preserveGlobalState disabled @requires function apcu_fetch @covers ::initializeSettings

File

core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelTest.php, line 62

Class

DrupalKernelTest

@coversDefaultClass \Drupal\Core\DrupalKernel @group DrupalKernel

Namespace

Code

public function testInitializeSettings() {
    $request = new Request();
    $classloader = new fakeAutoloader();
    // Create a kernel suitable for testing.
    $kernel = $this->getMockBuilder(DrupalKernel::class)
        ->disableOriginalConstructor()
        ->setMethods([
        'do_not_mock_any_methods',
    ])
        ->getMock();
    $classloader_property = new \ReflectionProperty($kernel, 'classLoader');
    $classloader_property->setAccessible(TRUE);
    $classloader_property->setValue($kernel, $classloader);
    $method = new \ReflectionMethod($kernel, 'initializeSettings');
    $method->setAccessible(TRUE);
    // Prepend another autoloader to simulate Drush's autoloader.
    $fake_drush_autoloader = function () {
        return NULL;
    };
    spl_autoload_register($fake_drush_autoloader, TRUE, TRUE);
    // Before calling DrupalKernel::initializeSettings() the first autoloader
    // is the fake Drush autoloader.
    $this->assertSame($fake_drush_autoloader, spl_autoload_functions()[0]);
    // Call DrupalKernel::initializeSettings() to simulate part of a Drupal
    // bootstrap. During the include of autoload.php Composer would prepend
    // Drupal's autoloader and then this method should not result in Drush's
    // autoloader becoming the first autoloader even if it swaps out
    // Composer's autoloader for an optimised one.
    $method->invoke($kernel, $request);
    $autoloaders = spl_autoload_functions();
    // The first autoloader should be the APCu based autoloader.
    $this->assertInstanceOf(ApcClassLoader::class, $autoloaders[0][0]);
    // The second autoloader should be the original autoloader the kernel was
    // constructed with.
    $this->assertSame($classloader, $autoloaders[1][0]);
    // The third autoloader should be Drush's autoloader.
    $this->assertSame($fake_drush_autoloader, $autoloaders[2]);
    // Reset the request factory because it is statically stored on the
    // request.
    Request::setFactory(NULL);
}