Issue #2807949 by kunal.sachdev, tim.plunkett, tedbow, Dropa: update.module is...

Issue #2807949 by kunal.sachdev, tim.plunkett, tedbow, Dropa: update.module is incorrectly only responding when modules are installed

core/modules/update/tests/src/Kernel/UpdateStorageTest.php

+<?php
+
+namespace Drupal\Tests\update\Kernel;
+
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests the Update module storage is cleared correctly.
+ *
+ * @group update
+ */
+class UpdateStorageTest extends KernelTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'update',
+  ];
+
+  /**
+   * Tests the Update module storage is cleared correctly.
+   */
+  public function testUpdateStorage() {
+    // Setting values in both key stores, then installing the module and
+    // testing if these key values are cleared.
+    $keyvalue_update = $this->container->get('keyvalue.expirable')->get('update');
+    $keyvalue_update->set('key', 'some value');
+    $keyvalue_update_available_release = $this->container->get('keyvalue.expirable')->get('update_available_release');
+    $keyvalue_update_available_release->set('key', 'some value');
+    $this->container->get('module_installer')->install(['help']);
+    $this->assertNull($keyvalue_update->get('key'));
+    $this->assertNull($keyvalue_update_available_release->get('key'));
+
+    // Setting new values in both key stores, then uninstalling the module and
+    // testing if these new key values are cleared.
+    $keyvalue_update->set('another_key', 'some value');
+    $keyvalue_update_available_release->set('another_key', 'some value');
+    $this->container->get('module_installer')->uninstall(['help']);
+    $this->assertNull($keyvalue_update->get('another_key'));
+    $this->assertNull($keyvalue_update_available_release->get('another_key'));
+  }
+
+}

core/modules/update/update.module

@@ -14,7 +14,6 @@
 use Drupal\Core\File\Exception\FileException;
 use Drupal\Core\Link;
 use Drupal\Core\Url;
-use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\Core\Site\Settings;
 use Drupal\update\UpdateFetcherInterface;
@@ -223,23 +222,21 @@ function update_themes_uninstalled($themes) {
 }
 
 /**
- * Implements hook_form_FORM_ID_alter() for system_modules().
+ * Implements hook_modules_installed().
  *
- * Adds a form submission handler to the system modules form, so that if a site
- * admin saves the form, we invalidate the information of available updates.
- *
- * @see _update_cache_clear()
+ * If modules are installed, we invalidate the information of available updates.
  */
-function update_form_system_modules_alter(&$form, FormStateInterface $form_state) {
-  $form['#submit'][] = 'update_storage_clear_submit';
+function update_modules_installed($modules) {
+  // Clear all update module data.
+  update_storage_clear();
 }
 
 /**
- * Form submission handler for system_modules().
+ * Implements hook_modules_uninstalled().
  *
- * @see update_form_system_modules_alter()
+ * If modules are uninstalled, we invalidate the information of available updates.
  */
-function update_storage_clear_submit($form, FormStateInterface $form_state) {
+function update_modules_uninstalled($modules) {
   // Clear all update module data.
   update_storage_clear();
 }