diff --git a/example/includes/config.yml b/example/includes/config.yml
index d9b2a80..94f2532 100644
--- a/example/includes/config.yml
+++ b/example/includes/config.yml
@@ -230,6 +230,9 @@ auth:
 
     # CAS Fake authenticated user
     #fake_authenticated_user: 'myusername'
+    #fake_authenticated_user_attributes:
+    #  attr1: value1
+    #  attr2: value2
 
     # CAS user attributes to retrieve with their properties:
     # [attr name]:
diff --git a/skel/config.yml b/skel/config.yml
index 7cc8d9f..48551f2 100644
--- a/skel/config.yml
+++ b/skel/config.yml
@@ -230,6 +230,9 @@ auth:
 
     # CAS Fake authenticated user
     #fake_authenticated_user: 'myusername'
+    #fake_authenticated_user_attributes:
+    #  attr1: value1
+    #  attr2: value2
 
     # CAS user attributes to retrieve with their properties:
     # [attr name]:
diff --git a/src/Auth/Cas.php b/src/Auth/Cas.php
index 673dcda..d84e279 100644
--- a/src/Auth/Cas.php
+++ b/src/Auth/Cas.php
@@ -9,6 +9,8 @@ use EesyPHP\Url;
 
 use phpCAS;
 
+use function EesyPHP\cast;
+
 class Cas extends Method {
 
   /**
@@ -39,6 +41,7 @@ class Cas extends Method {
         'version' => '2.0',
         'logout' => true,
         'fake_authenticated_user' => null,
+        'fake_authenticated_user_attributes' => [],
         'debug_log_file' => null,
         'ca_cert_certificate_path' => null,
         'user_attributes' => array(
@@ -182,4 +185,42 @@ class Cas extends Method {
       Url :: redirect(isset($_REQUEST['next'])?urldecode($_REQUEST['next']):null);
     Log :: fatal('No CAS ticket or fail to authenticate you');
   }
+
+  /**
+   * Check if user is authenticated using CAS backend
+   * @return bool
+   */
+  public static function is_authenticated() {
+    return self :: $fake_authenticated_user || phpCAS :: isAuthenticated();
+  }
+
+  /**
+   * Retrieve CAS attribute value(s) from CAS authenticated user
+   * @param string $attr The CAS attribute name
+   * @param mixed $default The default value to return if the CAS attribute is undefined
+   *                       (optional, default: null)
+   * @param string|null $cast The expected type of value (optional, default: string)
+   * @return mixed
+   */
+  public static function get_attr($attr, $default=null, $cast=null) {
+    if (self :: $fake_authenticated_user)
+      return App::get(
+        "auth.cas.fake_authenticated_user_attributes.$attr",
+        $default,
+        $cast ?? "string"
+      );
+    if (!phpCAS::hasAttribute($attr))
+      return $default;
+    return cast(phpCAS::getAttribute($attr), $cast?$cast:'string');
+  }
+
+  /**
+   * Retrieve CAS attributes's value(s) from CAS authenticated user
+   * @return array<string,mixed>
+   */
+  public static function get_attrs() {
+    if (self :: $fake_authenticated_user)
+      return App::get("auth.cas.fake_authenticated_user_attributes", [], "array");
+    return phpCAS::getAttributes();
+  }
 }
diff --git a/src/Auth/Casuser.php b/src/Auth/Casuser.php
index 4905591..5aed175 100644
--- a/src/Auth/Casuser.php
+++ b/src/Auth/Casuser.php
@@ -4,40 +4,25 @@ namespace EesyPHP\Auth;
 
 use EesyPHP\App;
 use EesyPHP\Auth;
+use EesyPHP\Auth\Cas;
 use EesyPHP\Auth\User;
 use EesyPHP\Check;
 use EesyPHP\Config;
 use EesyPHP\I18n;
 use EesyPHP\Log;
-use function EesyPHP\cast;
 use function EesyPHP\format_callable;
 use function EesyPHP\vardump;
 
-use phpCAS;
-
 class Casuser extends Backend {
 
-  /**
-   * Retrieve CAS attribute value(s) from CAS authenticated user
-   * @param string $attr The CAS attribute name
-   * @param mixed $default The default value to return if the CAS attribute is undefined
-   *                       (optional, default: null)
-   * @param string|null $cast The expected type of value (optional, default: string)
-   */
-  public static function get_attr($attr, $default=null, $cast=null) {
-    if (!phpCAS::hasAttribute($attr))
-      return $default;
-    return cast(phpCAS::getAttribute($attr), $cast?$cast:'string');
-  }
-
   /**
    * Retrieve a user by its username
    * @param string $username
    * @return \EesyPHP\Auth\User|null|false The user object if found, null it not, false in case of error
    */
   public static function get_user($username) {
-    if (!phpCAS :: isAuthenticated()) {
-      Log::error("get_user(%s): phpCAS not authenticated, can't compute user");
+    if (!Cas :: is_authenticated()) {
+      Log::error("get_user(%s): CAS backend not authenticated, can't compute user");
       return null;
     }
 
@@ -45,14 +30,14 @@ class Casuser extends Backend {
     self :: check_user_filters($username);
 
     $info = array();
-    foreach(Config::get('auth.cas.user_attributes') as $name => $attr_config) {
+    foreach(App::get('auth.cas.user_attributes') as $name => $attr_config) {
       $cas_name = Config::get("cas_name", null, 'string', false, $attr_config);
       $alt_cas_name = Config::get("alt_cas_name", $name, 'string', false, $attr_config);
-      if (!$cas_name || is_null(self :: get_attr($cas_name)))
+      if (!$cas_name || is_null(Cas :: get_attr($cas_name)))
         $cas_name = $alt_cas_name;
-      $info[$name] = self :: get_attr(
+      $info[$name] = Cas :: get_attr(
         $cas_name?$cas_name:$name,
-        Config::get("default", null, null, false, $attr_config)
+        default: Config::get("default", null, null, false, $attr_config)
       );
     }
     Log::debug('User "%s" info computed from CAS attributes:\n%s', $username, vardump($info));
@@ -65,12 +50,12 @@ class Casuser extends Backend {
    * @return void|never
    */
   public static function check_user_filters($username) {
-    foreach(Config::get('auth.cas.user_filters', [], 'array') as $attr => $filter) {
+    foreach(App::get('auth.cas.user_filters', [], 'array') as $attr => $filter) {
       if (is_callable($filter)) {
         if (
           !$filter(
             $username,
-            is_string($attr)?phpCAS::getAttribute($attr):phpCAS::getAttributes()
+            is_string($attr)?Cas::get_attr($attr):Cas::get_attrs()
           )
         )
         {
@@ -88,7 +73,7 @@ class Casuser extends Backend {
           Log::fatal(I18n::_("Configuration error in CAS auth backend."));
         }
 
-        $attr_values = self :: get_attr($attr, [], 'array');
+        $attr_values = Cas :: get_attr($attr, [], 'array');
         if (!$attr_values) {
           Log::warning(
             "get_user(%s): filter out by attribute %s (not defined)",