1 files changed, 51 insertions, 0 deletions
diff --git a/modules/simpletest/tests/theme.test b/modules/simpletest/tests/theme.test
index d54885099..af1141124 100644
--- a/modules/simpletest/tests/theme.test
+++ b/modules/simpletest/tests/theme.test
@@ -382,3 +382,54 @@ class ThemeHtmlTag extends DrupalUnitTestCase {
     $this->assertEqual('<title>title test</title>'."\n", theme_html_tag($tag), t('Test title tag generation.'));
   }
 }
+
+/**
+ * Tests for the ThemeRegistry class.
+ */
+class ThemeRegistryTestCase extends DrupalWebTestCase {
+  public static function getInfo() {
+    return array(
+      'name' => 'ThemeRegistry',
+      'description' => 'Tests the behavior of the ThemeRegistry class',
+      'group' => 'Theme',
+    );
+  }
+  function setUp() {
+    parent::setUp('theme_test');
+  }
+
+  /**
+   * Tests the behavior of the theme registry class.
+   */
+  function testRaceCondition() {
+    $_SERVER['REQUEST_METHOD'] = 'GET';
+    $cid = 'test_theme_registry';
+
+    // Directly instantiate the theme registry, this will cause a base cache
+    // entry to be written in __construct().
+    $registry = new ThemeRegistry($cid, 'cache');
+
+    $this->assertTrue(cache_get($cid), 'Cache entry was created.');
+
+    // Trigger a cache miss for an offset.
+    $this->assertTrue($registry['theme_test_template_test'], 'Offset was returned correctly from the theme registry.');
+    // This will cause the ThemeRegistry class to write an updated version of
+    // the cache entry when it is destroyed, usually at the end of the request.
+    // Before that happens, manually delete the cache entry we created earlier
+    // so that the new entry is written from scratch.
+    cache_clear_all($cid, 'cache');
+
+    // Destroy the class so that it triggers a cache write for the offset.
+    unset($registry);
+
+    $this->assertTrue(cache_get($cid), 'Cache entry was created.');
+
+    // Create a new instance of the class. Confirm that both the offset
+    // requested previously, and one that has not yet been requested are both
+    // available.
+    $registry = new ThemeRegistry($cid, 'cache');
+
+    $this->assertTrue($registry['theme_test_template_test'], 'Offset was returned correctly from the theme registry');
+    $this->assertTrue($registry['theme_test_template_test_2'], 'Offset was returned correctly from the theme registry');
+  }
+}