public function test_ajax_search_available_items_caps_check( $role, $expected_results ) {

    if ( 'administrator' !== $role ) {
      // If we're not an admin, we should get a wp_die( -1 ).
      $this->expectException( 'WPAjaxDieStopException' );
      $this->expectExceptionMessage( '-1' );
    }

    wp_set_current_user( self::factory()->user->create( array( 'role' => $role ) ) );

    $_POST = array(
      'action'                => 'search-available-menu-items-customizer',
      'customize-menus-nonce' => wp_create_nonce( 'customize-menus' ),
    );

    $this->make_ajax_call( 'search-available-menu-items-customizer' );

    // If we are an admin, we should get a proper response.
    if ( 'administrator' === $role ) {
      // Get the results.
      $response = json_decode( $this->_last_response, true );

      $this->assertSame( $expected_results, $response );
    }
  }