diff --git a/core/modules/block/lib/Drupal/block/Tests/BlockTest.php b/core/modules/block/lib/Drupal/block/Tests/BlockTest.php
index b5faa83..da1b1d4 100644
--- a/core/modules/block/lib/Drupal/block/Tests/BlockTest.php
+++ b/core/modules/block/lib/Drupal/block/Tests/BlockTest.php
@@ -18,7 +18,18 @@ class BlockTest extends WebTestBase {
    */
   public static $modules = array('block', 'custom_block', 'test_page_test');
 
+  /**
+   * A list of theme regions to test.
+   *
+   * @var array
+   */
   protected $regions;
+
+  /**
+   * A test user with administrative privileges.
+   *
+   * @var \Drupal\user\Plugin\Core\Entity\User
+   */
   protected $adminUser;
 
   public static function getInfo() {
@@ -63,7 +74,40 @@ function setUp() {
   }
 
   /**
-   * Test block visibility.
+   * Moves a block to a given region via the UI and confirms the result.
+   *
+   * @param array $block
+   *   An array of information about the block, including the following keys:
+   *   - module: The module providing the block.
+   *   - title: The title of the block.
+   *   - delta: The block's delta key.
+   * @param string $region
+   *   The machine name of the theme region to move the block to, for example
+   *   'header' or 'sidebar_first'.
+   */
+  function moveBlockToRegion(array $block, $region) {
+    // Set the created block to a specific region.
+    $edit = array();
+    $edit['blocks[0][region]'] = $region;
+    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
+
+    // Confirm that the block was moved to the proper region.
+    $this->assertText(t('The block settings have been updated.'), format_string('Block successfully moved to %region_name region.', array( '%region_name' => $region)));
+
+    // Confirm that the block is being displayed.
+    $this->drupalGet('');
+    $this->assertText(t($block['title']), 'Block successfully being displayed on the page.');
+
+    // Confirm that the custom block was found at the proper region.
+    $xpath = $this->buildXPathQuery('//div[@class=:region-class]//div[@id=:block-id]/*', array(
+     ':region-class' => 'region region-' . drupal_html_class($region),
+     ':block-id' => 'block-' . strtr(strtolower($block['machine_name']), '-', '_'),
+    ));
+    $this->assertFieldByXPath($xpath, NULL, t('Block found in %region_name region.', array('%region_name' => drupal_html_class($region))));
+  }
+
+  /**
+   * Tests block visibility.
    */
   function testBlockVisibility() {
     $block_name = 'system_powered_by_block';