allow access to unstartet tests, fixes #61

lib/VipsAssignment.php

@@ -541,7 +541,7 @@ class VipsAssignment extends SimpleORMap
 
             $now = date('Y-m-d H:i:s');
 
-            if ($this->isFinished() && $this->getAssignmentAttempt($user_id) ||
+            if ($this->isFinished() && ($this->type === 'practice' || $this->getAssignmentAttempt($user_id)) ||
                 $this->isSelfAssessment() && $this->getUserEndTime($user_id) < $now) {
                 if ($this->type === 'exam' || $this->options['released'] >= 3) {
                     return $this->options['released'];

lib/VipsFile.php

@@ -155,4 +155,20 @@ class VipsFile extends SimpleORMap
     {
         return strpos($this->mime_type, 'image/') === 0;
     }
+
+    /**
+     * Determine if this file references an audio file.
+     */
+    public function isAudio()
+    {
+        return strpos($this->mime_type, 'audio/') === 0;
+    }
+
+    /**
+     * Determine if this file references a video file.
+     */
+    public function isVideo()
+    {
+        return strpos($this->mime_type, 'video/') === 0;
+    }
 }