diff -u b/core/modules/forum/lib/Drupal/forum/Tests/ForumUninstallTest.php b/core/modules/forum/lib/Drupal/forum/Tests/ForumUninstallTest.php
--- b/core/modules/forum/lib/Drupal/forum/Tests/ForumUninstallTest.php
+++ b/core/modules/forum/lib/Drupal/forum/Tests/ForumUninstallTest.php
@@ -7,12 +7,12 @@
 
 namespace Drupal\forum\Tests;
 
-use Drupal\simpletest\WebTestBase;
+use Drupal\system\Tests\Module\ModuleTestBase;
 
 /**
  * Tests forum module uninstallation.
  */
-class ForumUninstallTest extends WebTestBase {
+class ForumUninstallTest extends ModuleTestBase {
 
   /**
    * Modules to enable.
@@ -32,7 +32,7 @@
   /**
    * Tests if forum module uninstallation properly deletes the field.
    */
-  function testForumUninstallWithField() {
+  function testForumUninstallAndReinstallWithField() {
     // Ensure that the field exists before uninstallation.
     $field = field_info_field('node', 'taxonomy_forums');
     $this->assertNotNull($field, 'The taxonomy_forums field exists.');
@@ -43,6 +43,38 @@
     // Check that the field is now deleted.
     $field = field_info_field('node', 'taxonomy_forums');
     $this->assertNull($field, 'The taxonomy_forums field has been deleted.');
+
+    // Uninstall and reinstall the forum module and its dependencies tests the
+    // the module installation and uninstallation APIs.
+    $module_data = system_rebuild_module_data();
+    $module_list = array();
+    foreach (array_keys($module_data['forum']->requires) as $dependency) {
+      // Disable all the dependencies if they are not required.
+      if (empty($module_data[$dependency]->info['required'])) {
+        $module_list[] = $dependency;
+      }
+    }
+
+    $this->container->get('module_handler')->uninstall($module_list);
+    foreach ($module_list as $module) {
+      // Check that the module's database tables no longer exist.
+      $this->assertModuleTablesDoNotExist($module);
+      // Check that the module's config files no longer exist.
+      $this->assertNoModuleConfig($module);
+    }
+
+    $this->container->get('module_handler')->install(array('forum'));
+    foreach ($module_list as $module) {
+      // Check that the module's database tables no longer exist.
+      $this->assertModuleTablesExist($module);
+      // Check that the module's config files no longer exist.
+      $this->assertModuleConfig($module);
+    }
+
+    // Ensure that the field exists after reinstallation.
+    $field = field_info_field('node', 'taxonomy_forums');
+    $this->assertNotNull($field, 'The taxonomy_forums field exists.');
+
   }