function ModuleHandlerTest::testModuleStreamWrappers

Tests whether module-provided stream wrappers are registered properly.

File

core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php, line 333

Class

ModuleHandlerTest

Tests ModuleHandler functionality.

Namespace

Code

public function testModuleStreamWrappers() : void {
    // file_test.module provides (among others) a 'dummy' stream wrapper.
    // Verify that it is not registered yet to prevent false positives.
    $stream_wrappers = \Drupal::service('stream_wrapper_manager')->getWrappers();
    $this->assertFalse(isset($stream_wrappers['dummy']));
    $this->moduleInstaller()
        ->install([
        'file_test',
    ]);
    // Verify that the stream wrapper is available even without calling
    // \Drupal::service('stream_wrapper_manager')->getWrappers() again.
    // If the stream wrapper is not available file_exists() will raise a notice.
    file_exists('dummy://');
    $stream_wrappers = \Drupal::service('stream_wrapper_manager')->getWrappers();
    $this->assertTrue(isset($stream_wrappers['dummy']));
    $this->assertTrue(isset($stream_wrappers['dummy1']));
    $this->assertTrue(isset($stream_wrappers['dummy2']));
}