Improve signon-script example

Signed-off-by: Michal Čihař <michal@cihar.com>

examples/signon-script.php

@@ -23,7 +23,15 @@
  */
 function get_login_credentials($user)
 {
-    return array('root', '');
+    /* Optionally we can use passed username */
+    if (!empty($user)) {
+        return array($user, 'password');
+    }
+
+    /* Here we would retrieve the credentials */
+    $credentials = array('root', '');
+
+    return $credentials;
 }
 
 ?>

test/classes/plugin/auth/PMA_AuthenticationSignon_test.php

@@ -133,12 +133,12 @@ class PMA_AuthenticationSignon_Test extends PHPUnit_Framework_TestCase
         );
 
         $this->assertEquals(
-            'root',
+            'user',
             $GLOBALS['PHP_AUTH_USER']
         );
 
         $this->assertEquals(
-            '',
+            'password',
             $GLOBALS['PHP_AUTH_PW']
         );