Fix test Factory entity manager initialisation

Tests were failing when one Factory object instance, created by the test
code, attempted to create and use another Factory object.
With out this change, the Factory entity manager initialisation tries to use
a bootstrap_doctrine.php file which does not exist in the test environment

lib/Gocdb_Services/Factory.php

@@ -112,6 +112,18 @@ public static function getEntityManager(){
         return self::$em;
     }
 
+    /**
+     * Set an externally provided Entity Manager.
+     * ++ONLY++ used for initialising phpunit tests. Allows Factory services to
+     * create and use other Factory services.
+     * Without this, the include paths inside Gocdb_Services code require the
+     * presence of a second bootstrap_doctrine.php file.
+     * @param \Doctrine\ORM\EntityManager $entityManager
+     */
+    public static function setEntityManager($entityManager){
+        self::$em = $entityManager;
+    }
+
     /**
      * Sinlgeton Site service
      * @return org\gocdb\services\Site

tests/unit/lib/Gocdb_Services/APIAuthenticationServiceTest.php

@@ -91,6 +91,9 @@ protected function getTearDownOperation() {
   protected function setUp() {
     parent::setUp();
     $this->entityManager = $this->createEntityManager();
+    // Pass the Entity Manager into the Factory to allow Gocdb_Services
+    // to use other Gocdb_Services.
+    \Factory::setEntityManager($this->entityManager);
   }
 
   /**

tests/unit/lib/Gocdb_Services/SiteServiceTest.php

@@ -99,6 +99,9 @@ protected function setUp() {
     parent::setUp();
     $this->entityManager = $this->createEntityManager();
     $this->testUtil = new TestUtil();
+    // Pass the Entity Manager into the Factory to allow Gocdb_Services
+    // to use other Gocdb_Service.
+    \Factory::setEntityManager($this->entityManager);
   }
 
   /**