#567192 by mgifford: Fixed Expanding simpletest groups not accessible via keyboard.

modules/simpletest/simpletest.css

@@ -71,3 +71,22 @@ div.simpletest-image {
   display: inline;
   cursor: pointer;
 }
+
+a.simpletest-collapse {
+  height: 0;
+  width: 0;
+  top: -99em;
+  position: absolute;
+
+}
+
+a.simpletest-collapse:focus,
+a.simpletest-collapse:hover {
+  font-size: 80%;
+  top: 0px;
+  height: auto;
+  width: auto;
+  overflow: visible;
+  position: relative;
+  z-index: 1000;
+} 

modules/simpletest/simpletest.pages.inc

@@ -83,8 +83,8 @@ function theme_simpletest_test_table($variables) {
   // Define the images used to expand/collapse the test groups.
   $js = array(
     'images' => array(
-      theme('image', array('path' => 'misc/menu-collapsed.png', 'alt' => 'Expand', 'title' => 'Expand')),
+      theme('image', array('path' => 'misc/menu-collapsed.png', 'alt' => t('Expand'), 'title' => t('Expand'))) . ' <a href="#" class="simpletest-collapse">(' . t('Expand') . ')</a>',
-      theme('image', array('path' => 'misc/menu-expanded.png', 'alt' => 'Collapsed', 'title' => 'Collapsed')),
+      theme('image', array('path' => 'misc/menu-expanded.png', 'alt' => t('Collapse'), 'title' => t('Collapse'))) . ' <a href="#" class="simpletest-collapse">(' . t('Collapse') . ')</a>',
     ),
   );
 

modules/simpletest/tests/form.test

@@ -305,6 +305,9 @@ class FormsElementsLabelsTestCase extends DrupalWebTestCase {
     $elements = $this->xpath('//input[@id="edit-form-textfield-test-title-after"]/following-sibling::label[@for="edit-form-textfield-test-title-after" and @class="option"]');
     $this->assertTrue(isset($elements[0]), t("Label after field and label option class correct for text field."));
 
+    $elements = $this->xpath('//input[@id="edit-form-textfield-test-title-invisible"]/following-sibling::label[@for="edit-form-textfield-test-title-invisible" and @class="element-invisible"]');
+    $this->assertTrue(isset($elements[0]), t("Label after field and label class is element-invisible."));
+
     $elements = $this->xpath('//label[@for="edit-form-textfield-test-title-no-show"]');
     $this->assertFalse(isset($elements[0]), t("No label tag when title set not to display."));
   }

modules/simpletest/tests/form_test.module

@@ -537,6 +537,11 @@ function form_label_test_form(&$form_state) {
     '#title' => t('Textfield test for title after element'),
     '#title_display' => 'after',
   );
+  $form['form_textfield_test_title_invisible'] = array(
+    '#type' => 'textfield',
+    '#title' => t('Textfield test for invisible title'),
+    '#title_display' => 'invisible',
+  );
   // Textfield test for title set not to display
   $form['form_textfield_test_title_no_show'] = array(
     '#type' => 'textfield',