Issue #2916898 by dagmar, jhodgdon, chmez, dpagini, nicolas.rafaelli, alexpott, tstoeckler: Do not use basic_html text format for 'No log messages available.' message

core/modules/dblog/config/optional/views.view.watchdog.yml

@@ -652,18 +652,16 @@ display:
       footer: {  }
       empty:
         area:
-          id: area
+          id: area_text_custom
           table: views
-          field: area
+          field: area_text_custom
           relationship: none
           group_type: group
-          admin_label: ''
+          admin_label: 'No log messages available.'
           empty: true
           tokenize: false
-          content:
-            value: 'No log messages available.'
-            format: basic_html
-          plugin_id: text
+          content: 'No log messages available.'
+          plugin_id: text_custom
       relationships:
         uid:
           id: uid

core/modules/dblog/dblog.install

@@ -156,3 +156,42 @@ function dblog_update_8400() {
     }
   }
 }
+
+/**
+ * Change 'No logs message available.' area plugin type.
+ */
+function dblog_update_8600() {
+  $config_factory = \Drupal::configFactory();
+
+  $view = \Drupal::configFactory()->getEditable('views.view.watchdog');
+  if (empty($view)) {
+    return;
+  }
+
+  $empty_text = $view->get('display.default.display_options.empty');
+  if (!isset($empty_text['area']['content']['value'])) {
+    return;
+  }
+
+  // Only update the empty text if is untouched from the original version.
+  if ($empty_text['area']['id'] == 'area' &&
+      $empty_text['area']['plugin_id'] == 'text' &&
+      $empty_text['area']['field'] == 'area' &&
+      $empty_text['area']['content']['value'] == 'No log messages available.') {
+
+    $new_config = [
+      'id' => 'area_text_custom',
+      'table' => 'views',
+      'field' => 'area_text_custom',
+      'relationship' => 'none',
+      'group_type' => 'group',
+      'admin_label' => 'No log messages available.',
+      'empty' => TRUE,
+      'tokenize' => FALSE,
+      'content' => 'No log messages available.',
+      'plugin_id' => 'text_custom',
+    ];
+    $view->set('display.default.display_options.empty.area', $new_config);
+    $view->save();
+  }
+}

core/modules/dblog/tests/src/Functional/DbLogViewsTest.php

@@ -2,7 +2,7 @@
 
 namespace Drupal\Tests\dblog\Functional;
 
-use Drupal\filter\Entity\FilterFormat;
+use Drupal\views\Views;
 
 /**
  * Generate events and verify dblog entries; verify user access to log reports
@@ -44,27 +44,16 @@ class DbLogViewsTest extends DbLogTest {
   }
 
   /**
-   * {@inheritdoc}
+   * Tests the empty text for the watchdog view is not using an input format.
    */
-  public function testDBLogAddAndClear() {
-    // Is necesary to create the basic_html format because if absent after
-    // delete the logs, a new log entry is created indicating that basic_html
-    // format do not exists.
-    $basic_html_format = FilterFormat::create([
-      'format' => 'basic_html',
-      'name' => 'Basic HTML',
-      'filters' => [
-        'filter_html' => [
-          'status' => 1,
-          'settings' => [
-            'allowed_html' => '<p> <br> <strong> <a> <em>',
-          ],
-        ],
-      ],
-    ]);
-    $basic_html_format->save();
+  public function testEmptyText() {
+    $view = Views::getView('watchdog');
+    $data = $view->storage->toArray();
+    $area = $data['display']['default']['display_options']['empty']['area'];
 
-    parent::testDBLogAddAndClear();
+    $this->assertEqual('text_custom', $area['plugin_id']);
+    $this->assertEqual('area_text_custom', $area['field']);
+    $this->assertEqual('No log messages available.', $area['content']);
   }
 
 }

core/modules/dblog/tests/src/Functional/Update/DblogNoLogsAvailableUpgradeTest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Drupal\Tests\dblog\Functional\Update;
+
+use Drupal\FunctionalTests\Update\UpdatePathTestBase;
+use Drupal\views\Views;
+
+/**
+ * Test the upgrade path of changing the emtpy text area for watchdog view.
+ *
+ * @see dblog_update_8600()
+ *
+ * @group Update
+ */
+class DblogNoLogsAvailableUpgradeTest extends UpdatePathTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setDatabaseDumpFiles() {
+    $this->databaseDumpFiles = [
+      __DIR__ . '/../../../../../system/tests/fixtures/update/drupal-8.4.0.bare.standard.php.gz',
+    ];
+  }
+
+  /**
+   * Tests that no logs available text is now using a custom area.
+   */
+  public function testDblogUpgradePath() {
+
+    $this->runUpdates();
+
+    $view = Views::getView('watchdog');
+    $data = $view->storage->toArray();
+    $area = $data['display']['default']['display_options']['empty']['area'];
+
+    $this->assertEqual('text_custom', $area['plugin_id']);
+    $this->assertEqual('area_text_custom', $area['field']);
+    $this->assertEqual('No log messages available.', $area['content']);
+  }
+
+}