Add unit test for dot helper with array prototype

Author: kylekatarnls

tests/helpers.php

@@ -227,4 +227,25 @@ public function testHelperFile()
 
         $this->assertEquals(6, $jsPhpize->render('13 + 7'));
     }
+
+    public function testDotHelperWithArrayPrototype()
+    {
+        $jsPhpize = new JsPhpize(array(
+            'helpers' => array(
+                'dot' => 'dotWithArrayPrototype',
+            ),
+            'returnLastStatement' => true,
+        ));
+
+        file_put_contents(
+            'error.php',
+            "<?php\n".
+            $jsPhpize->compile('a = [1,2,3]; a.filter(function (i) { return i % 2; })')
+        );
+        exit;
+        $this->assertEquals(
+            array(1, 3),
+            $jsPhpize->render('a = [1,2,3]; a.filter(function (i) { return i % 2; })')
+        );
+    }
 }