add new method

Closes #3270499

core/tests/Drupal/KernelTests/Core/Asset/ResolvedLibraryDefinitionsFilesMatchTest.php

@@ -99,6 +99,20 @@ class ResolvedLibraryDefinitionsFilesMatchTest extends KernelTestBase {
   protected function setUp(): void {
     parent::setUp();
 
+    // Install all core themes.
+    sort($this->allThemes);
+    $this->container->get('theme_installer')->install($this->allThemes);
+
+    $this->themeHandler = $this->container->get('theme_handler');
+    $this->themeInitialization = $this->container->get('theme.initialization');
+    $this->themeManager = $this->container->get('theme.manager');
+    $this->libraryDiscovery = $this->container->get('library.discovery');
+  }
+
+  /**
+   * Ensures that all core module and theme library files exist.
+   */
+  public function testCoreLibraryCompleteness(): void {
     // Enable all core modules.
     $all_modules = $this->container->get('extension.list.module')->getList();
     $all_modules = array_filter($all_modules, function ($module) {
@@ -142,20 +156,33 @@ protected function setUp(): void {
     sort($this->allModules);
     $this->container->get('module_installer')->install($this->allModules);
 
-    // Install all core themes.
-    sort($this->allThemes);
-    $this->container->get('theme_installer')->install($this->allThemes);
+    $this->assertLibraries();
+  }
 
-    $this->themeHandler = $this->container->get('theme_handler');
-    $this->themeInitialization = $this->container->get('theme.initialization');
-    $this->themeManager = $this->container->get('theme.manager');
-    $this->libraryDiscovery = $this->container->get('library.discovery');
+  /**
+   * Ensures that module and theme library files exist for a deprecated modules.
+   *
+   * @group legacy
+   */
+  public function testCoreLibraryCompletenessDeprecated(): void {
+    // Find and install deprecated modules to test.
+    $all_modules = $this->container->get('extension.list.module')->getList();
+    $deprecated_modules_to_test = array_filter($all_modules, function ($module) {
+      if ($module->origin == 'core'
+        && $module->info[ExtensionLifecycle::LIFECYCLE_IDENTIFIER] === ExtensionLifecycle::DEPRECATED) {
+        return TRUE;
+      }
+    });
+    $this->container->get('module_installer')->install(array_keys($deprecated_modules_to_test));
+    $this->allModules = array_keys(\Drupal::moduleHandler()->getModuleList());
+
+    $this->assertLibraries();
   }
 
   /**
-   * Ensures that all core module and theme library files exist.
+   * Asserts the libraries for modules and themes exist.
    */
-  public function testCoreLibraryCompleteness(): void {
+  public function assertLibraries(): void {
     // First verify all libraries with no active theme.
     $this->verifyLibraryFilesExist($this->getAllLibraries());