New: Add phpunit tests

test/FactureTest.php

@@ -43,6 +43,9 @@ if (empty($user->id))
  * @covers DoliDb
  * @covers User
  * @covers Translate
+ * @covers Conf
+ * @covers Interfaces
+ * @covers CommonObject
  * @remarks	backupGlobals must be disabled to have db,conf,user and lang not erased.
  */
 class FactureTest extends PHPUnit_Framework_TestCase

test/phpunittestok.xml

@@ -2,6 +2,9 @@
 <filter>
   <blacklist>
     <directory suffix=".php">../test/</directory>
+    <directory suffix=".php">../htdocs/includes/adodbtime/</directory>
+    <directory suffix=".php">../htdocs/includes/artichow/</directory>
+    <directory suffix=".php">../htdocs/includes/fpdf/</directory>
   </blacklist>
 </filter>
 </phpunit>
\ No newline at end of file