Add a test for HTML5 data attributes to testAssertNotHasElementWithAttributes()

Author: stevegrunwell

tests/MarkupAssertionsTraitTest.php

@@ -78,7 +78,7 @@ public function testAssertNotHasElementWithAttributes()
                 'type' => 'email',
                 'value' => 'test@example.com',
             ],
-            '<label>City</label><br><input type="text" value="New York" />'
+            '<label>City</label><br><input type="text" value="New York" data-foo="bar" />'
         );
     }
 
@@ -129,6 +129,12 @@ public function attributeProvider()
                 ],
                 '[checked]',
             ],
+            'Data attribute' => [
+                [
+                    'data-foo' => 'bar',
+                ],
+                '[data-foo="bar"]',
+            ],
             'Value contains quotes' => [
                 [
                     'name' => 'Austin "Danger" Powers',