Update to Drupal 8.2.0. For more information, see https://www.drupal.org/project/drupal/releases/8.2.0

core/modules/dblog/tests/src/Kernel/DbLogControllerTest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Drupal\Tests\dblog\Kernel;
+
+use Drupal\dblog\Controller\DbLogController;
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests for the DbLogController class.
+ *
+ * @group dblog
+ */
+class DbLogControllerTest extends KernelTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['dblog', 'user'];
+
+  /**
+   * Tests corrupted log entries can still display available data.
+   */
+  public function testDbLogCorrupted() {
+    $this->installEntitySchema('user');
+    $dblog_controller = DbLogController::create($this->container);
+
+    // Check message with properly serialized data.
+    $message = (object) [
+      'message' => 'Sample message with placeholder: @placeholder',
+      'variables' => serialize(['@placeholder' => 'test placeholder']),
+    ];
+
+    $this->assertEquals('Sample message with placeholder: test placeholder', $dblog_controller->formatMessage($message));
+
+    // Check that controller work with corrupted data.
+    $message->variables = 'BAD SERIALIZED DATA';
+    $formatted = $dblog_controller->formatMessage($message);
+    $this->assertEquals('Log data is corrupted and cannot be unserialized: Sample message with placeholder: @placeholder', $formatted);
+  }
+
+}