<?php

/*
*  rest_api_init
*  Custom /resize route
*
*  @since 3.0
*/
add_action( 'rest_api_init', function () {
   $my_namespace = ALM_REST_NAMESPACE;
   $my_endpoint = '/test';
   register_rest_route( $my_namespace, $my_endpoint, 
      array(
         'methods' => 'GET',
         'callback' => 'alm_rest_test',
      )
   );
});


/*
*  test
*  Test REST API access
*
*  @param $request      $_POST
*  @return $response    json
*  @since 3.2

*/

function alm_rest_test( WP_REST_Request $request ) {  
   
   error_reporting(E_ALL|E_STRICT);		          
   
   // Access is enable, send the response
   $response = array(
      'success' => true
   );   
   
   // Send response as JSON
   wp_send_json($response);
}