ExtensionPathResolverTest.php

<?php

namespace Drupal\KernelTests\Core\Bootstrap;

use Drupal\Core\Extension\Exception\UnknownExtensionException;
use Drupal\KernelTests\KernelTestBase;

/**
 * Tests that extension path resolver works correctly.
 *
 * @coversDefaultClass \Drupal\Core\Extension\ExtensionPathResolver
 *
 * @group Bootstrap
 */
class ExtensionPathResolverTest extends KernelTestBase {
    
    /**
     * @covers ::getPathname
     */
    public function testExtensionPathResolving() : void {
        // Retrieving the location of a module.
        $this->assertSame('core/modules/system/system.info.yml', \Drupal::service('extension.list.module')->getPathname('system'));
        // Retrieving the location of a theme.
        \Drupal::service('theme_installer')->install([
            'stark',
        ]);
        $this->assertSame('core/themes/stark/stark.info.yml', \Drupal::service('extension.list.theme')->getPathname('stark'));
        // Retrieving the location of a theme engine.
        $this->assertSame('core/themes/engines/twig/twig.info.yml', \Drupal::service('extension.list.theme_engine')->getPathname('twig'));
        // Retrieving the location of a profile. Profiles are a special case with
        // a fixed location and naming.
        $this->assertSame('core/profiles/testing/testing.info.yml', \Drupal::service('extension.list.profile')->getPathname('testing'));
    }
    
    /**
     * @covers ::getPath
     */
    public function testExtensionPathResolvingPath() : void {
        $this->assertSame('core/modules/system/tests/modules/driver_test', \Drupal::service('extension.list.module')->getPath('driver_test'));
    }
    
    /**
     * @covers ::getPathname
     */
    public function testExtensionPathResolvingWithNonExistingModule() : void {
        $this->expectException(UnknownExtensionException::class);
        $this->expectExceptionMessage('The module there_is_a_module_for_that does not exist.');
        $this->assertNull(\Drupal::service('extension.list.module')->getPathname('there_is_a_module_for_that'), 'Searching for an item that does not exist returns NULL.');
    }
    
    /**
     * @covers ::getPathname
     */
    public function testExtensionPathResolvingWithNonExistingTheme() : void {
        $this->expectException(UnknownExtensionException::class);
        $this->expectExceptionMessage('The theme there_is_a_theme_for_you does not exist.');
        $this->assertNull(\Drupal::service('extension.list.theme')->getPathname('there_is_a_theme_for_you'), 'Searching for an item that does not exist returns NULL.');
    }
    
    /**
     * @covers ::getPathname
     */
    public function testExtensionPathResolvingWithNonExistingProfile() : void {
        $this->expectException(UnknownExtensionException::class);
        $this->expectExceptionMessage('The profile there_is_an_install_profile_for_you does not exist.');
        $this->assertNull(\Drupal::service('extension.list.profile')->getPathname('there_is_an_install_profile_for_you'), 'Searching for an item that does not exist returns NULL.');
    }
    
    /**
     * @covers ::getPathname
     */
    public function testExtensionPathResolvingWithNonExistingThemeEngine() : void {
        $this->expectException(UnknownExtensionException::class);
        $this->expectExceptionMessage('The theme_engine there_is_an_theme_engine_for_you does not exist');
        $this->assertNull(\Drupal::service('extension.list.theme_engine')->getPathname('there_is_an_theme_engine_for_you'), 'Searching for an item that does not exist returns NULL.');
    }

}