#866 Language element supports unknown values (#1478)

Author: j3nsch

library/Application/Form/Element/Language.php

@@ -69,6 +69,14 @@ public function setValue($value)
             }
         }
 
+        if (! in_array($value, array_keys(self::getLanguageList()))) {
+            $label = Locale::getDisplayName($value);
+            if ($label !== $value) {
+                $label .= " ({$value})";
+            }
+            $this->addMultiOption($value, $label);
+        }
+
         parent::setValue($value);
     }
 

tests/library/Application/Form/Element/LanguageTest.php

@@ -104,6 +104,11 @@ public function testAutoMapValueToLanguageId()
 
     public function testUnknownLanguage()
     {
-        $this->markTestIncomplete();
+        $language = $this->getElement();
+        $langCode = 'cmn';
+
+        $language->setValue($langCode);
+        $this->assertEquals($langCode, $language->getValue());
+        $this->assertTrue($language->isValid($langCode));
     }
 }