Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / modules / system / tests / src / Functional / Theme / HtmlAttributesTest.php
diff --git a/web/core/modules/system/tests/src/Functional/Theme/HtmlAttributesTest.php b/web/core/modules/system/tests/src/Functional/Theme/HtmlAttributesTest.php

new file mode 100644 (file)

index 0000000..5aa4be9
--- /dev/null
+++ b/web/core/modules/system/tests/src/Functional/Theme/HtmlAttributesTest.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Drupal\Tests\system\Functional\Theme;
+
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests attributes inserted in the 'html' and 'body' elements on the page.
+ *
+ * @group Theme
+ */
+class HtmlAttributesTest extends BrowserTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['theme_test'];
+
+  /**
+   * Tests that attributes in the 'html' and 'body' elements can be altered.
+   */
+  public function testThemeHtmlAttributes() {
+    $this->drupalGet('');
+    $this->assertSession()->responseContains('<html lang="en" dir="ltr" theme_test_html_attribute="theme test html attribute value">');
+    $attributes = $this->xpath('/body[@theme_test_body_attribute="theme test body attribute value"]');
+    $this->assertTrue(count($attributes) == 1, "Attribute set in the 'body' element via hook_preprocess_HOOK() found.");
+  }
+
+}