ClassLoaderTest.php

<?php

namespace Drupal\Tests\system\Functional\Module;

use Drupal\module_autoload_test\SomeClass;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests class loading for modules.
 *
 * @group Module
 */
class ClassLoaderTest extends BrowserTestBase {
    
    /**
     * The expected result from calling the module-provided class' method.
     *
     * @var string
     */
    protected $expected = 'Drupal\\module_autoload_test\\SomeClass::testMethod() was invoked.';
    
    /**
     * {@inheritdoc}
     */
    protected $apcuEnsureUniquePrefix = TRUE;
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests that module-provided classes can be loaded when a module is enabled.
     *
     * @see \Drupal\module_autoload_test\SomeClass
     */
    public function testClassLoading() {
        // Enable the module_test and module_autoload_test modules.
        \Drupal::service('module_installer')->install([
            'module_test',
            'module_autoload_test',
        ], FALSE);
        $this->resetAll();
        // Check twice to test an unprimed and primed system_list() cache.
        for ($i = 0; $i < 2; $i++) {
            $this->drupalGet('module-test/class-loading');
            $this->assertSession()
                ->statusCodeEquals(200);
            $this->assertText($this->expected, 'Autoloader loads classes from an enabled module.');
        }
    }
    
    /**
     * Tests that module-provided classes can't be loaded if module not installed.
     *
     * @see \Drupal\module_autoload_test\SomeClass
     */
    public function testClassLoadingNotInstalledModules() {
        // Enable the module_test module.
        \Drupal::service('module_installer')->install([
            'module_test',
        ], FALSE);
        $this->resetAll();
        // Check twice to test an unprimed and primed system_list() cache.
        for ($i = 0; $i < 2; $i++) {
            $this->drupalGet('module-test/class-loading');
            $this->assertSession()
                ->statusCodeEquals(200);
            $this->assertNoText($this->expected, 'Autoloader does not load classes from a disabled module.');
        }
    }
    
    /**
     * Tests that module-provided classes can't be loaded from disabled modules.
     *
     * @see \Drupal\module_autoload_test\SomeClass
     */
    public function testClassLoadingDisabledModules() {
        // Enable the module_test and module_autoload_test modules.
        \Drupal::service('module_installer')->install([
            'module_test',
            'module_autoload_test',
        ], FALSE);
        $this->resetAll();
        // Ensure that module_autoload_test is disabled.
        $this->container
            ->get('module_installer')
            ->uninstall([
            'module_autoload_test',
        ], FALSE);
        $this->resetAll();
        // Check twice to test an unprimed and primed system_list() cache.
        for ($i = 0; $i < 2; $i++) {
            $this->drupalGet('module-test/class-loading');
            $this->assertSession()
                ->statusCodeEquals(200);
            $this->assertNoText($this->expected, 'Autoloader does not load classes from a disabled module.');
        }
    }
    
    /**
     * Ensures the negative caches in the class loader don't result in crashes.
     */
    public function testMultipleModules() {
        $this->drupalLogin($this->rootUser);
        $edit = [
            "modules[module_install_class_loader_test1][enable]" => TRUE,
            "modules[module_install_class_loader_test2][enable]" => TRUE,
        ];
        $this->drupalPostForm('admin/modules', $edit, t('Install'));
        $this->rebuildContainer();
        $this->assertTrue(\Drupal::moduleHandler()->moduleExists('module_install_class_loader_test2'), 'The module_install_class_loader_test2 module has been installed.');
    }
    
    /**
     * Tests that .module files can use class constants in main section.
     */
    public function testAutoloadFromModuleFile() {
        $this->assertFalse(defined('MODULE_AUTOLOAD_TEST_CONSTANT'));
        $this->drupalLogin($this->rootUser);
        $edit = [
            "modules[module_autoload_test][enable]" => TRUE,
        ];
        $this->drupalPostForm('admin/modules', $edit, t('Install'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->resetAll();
        $this->assertSame(SomeClass::TEST, MODULE_AUTOLOAD_TEST_CONSTANT);
    }

}