--- /dev/null
+<?php
+
+namespace Drupal\Tests\system\Functional\Module;
+
+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.
+ */
+ protected $expected = 'Drupal\\module_autoload_test\\SomeClass::testMethod() was invoked.';
+
+ /**
+ * 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->assertResponse(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->assertResponse(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->assertResponse(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.');
+ }
+
+}