function SystemListingTest::testDirectoryPrecedence

Tests that files in different directories take precedence as expected.

File

core/modules/system/tests/src/Kernel/Common/SystemListingTest.php, line 20

Class

SystemListingTest

Tests scanning system directories in drupal_system_listing().

Namespace

Code

public function testDirectoryPrecedence() : void {
    // Define the module files we will search for, and the directory precedence
    // we expect.
    $expected_directories = [
        // When both copies of the module are compatible with Drupal core, the
        // copy in the profile directory takes precedence.
'drupal_system_listing_compatible_test' => [
            'core/profiles/testing/modules',
            'core/modules/system/tests/modules',
        ],
    ];
    // This test relies on two versions of the same module existing in
    // different places in the filesystem. Without that, the test has no
    // meaning, so assert their presence first.
    foreach ($expected_directories as $module => $directories) {
        foreach ($directories as $directory) {
            $filename = "{$directory}/{$module}/{$module}.info.yml";
            $this->assertFileExists($this->root . '/' . $filename);
        }
    }
    // Now scan the directories and check that the files take precedence as
    // expected.
    $listing = new ExtensionDiscovery($this->root);
    $listing->setProfileDirectories([
        'core/profiles/testing',
    ]);
    $files = $listing->scan('module');
    foreach ($expected_directories as $module => $directories) {
        $expected_directory = array_shift($directories);
        $expected_uri = "{$expected_directory}/{$module}/{$module}.info.yml";
        $module_path = $files[$module]->getPathname();
        $this->assertEquals($expected_uri, $module_path, "Module {$module_path} was found at {$expected_uri}.");
    }
}