Merge branch 'hotfix/22'

Close #22

Author: weierophinney

CHANGELOG.md

@@ -6,7 +6,8 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Added
 
-- Nothing.
+- [#22](https://github.com/zendframework/zend-view/pull/22) adds support for the
+  `async` attribute within the `headScript` helper.
 
 ### Deprecated
 

src/Helper/HeadScript.php

@@ -87,6 +87,7 @@ class HeadScript extends Placeholder\Container\AbstractStandalone
         'charset',
         'crossorigin',
         'defer',
+        'async',
         'language',
         'src',
     ];
@@ -393,6 +394,9 @@ public function itemToString($item, $indent, $escapeStart, $escapeEnd)
                 if ('defer' == $key) {
                     $value = 'defer';
                 }
+                if ('async' == $key) {
+                    $value = 'async';
+                }
                 $attrString .= sprintf(' %s="%s"', $key, ($this->autoEscape) ? $this->escape($value) : $value);
             }
         }

test/Helper/HeadScriptTest.php

@@ -491,4 +491,18 @@ public function testOmitsTypeAttributeIfEmptyValueAndHtml5Doctype()
         $test = $this->helper->__invoke()->toString();
         $this->assertNotContains('type', $test);
     }
+
+    /**
+     * @group 22
+     */
+    public function testSupportsAsyncAttribute()
+    {
+        $this->helper->__invoke()->appendScript(
+            '// some script' . PHP_EOL,
+            'text/javascript',
+            ['async' => true]
+        );
+        $test = $this->helper->__invoke()->toString();
+        $this->assertContains('async="', $test);
+    }
 }