Jetpack_Heartbeat::generate_stats_array PHP Method

    public static function generate_stats_array($prefix = '')
    {
        $return = array();
        $return["{$prefix}version"] = JETPACK__VERSION;
        $return["{$prefix}wp-version"] = get_bloginfo('version');
        $return["{$prefix}php-version"] = PHP_VERSION;
        $return["{$prefix}branch"] = floatval(JETPACK__VERSION);
        $return["{$prefix}wp-branch"] = floatval(get_bloginfo('version'));
        $return["{$prefix}php-branch"] = floatval(PHP_VERSION);
        $return["{$prefix}public"] = Jetpack_Options::get_option('public');
        $return["{$prefix}ssl"] = Jetpack::permit_ssl();
        $return["{$prefix}is-https"] = is_ssl() ? 'https' : 'http';
        $return["{$prefix}language"] = get_bloginfo('language');
        $return["{$prefix}charset"] = get_bloginfo('charset');
        $return["{$prefix}is-multisite"] = is_multisite() ? 'multisite' : 'singlesite';
        $return["{$prefix}identitycrisis"] = Jetpack::check_identity_crisis() ? 'yes' : 'no';
        $return["{$prefix}plugins"] = implode(',', Jetpack::get_active_plugins());
        $return["{$prefix}manage-enabled"] = Jetpack::is_module_active('manage');
        // is-multi-network can have three values, `single-site`, `single-network`, and `multi-network`
        $return["{$prefix}is-multi-network"] = 'single-site';
        if (is_multisite()) {
            $return["{$prefix}is-multi-network"] = Jetpack::is_multi_network() ? 'multi-network' : 'single-network';
        }
        if (!empty($_SERVER['SERVER_ADDR']) || !empty($_SERVER['LOCAL_ADDR'])) {
            $ip = !empty($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR'];
            $ip_arr = array_map('intval', explode('.', $ip));
            if (4 == count($ip_arr)) {
                $return["{$prefix}ip-2-octets"] = implode('.', array_slice($ip_arr, 0, 2));
            }
        }
        foreach (Jetpack::get_available_modules() as $slug) {
            $return["{$prefix}module-{$slug}"] = Jetpack::is_module_active($slug) ? 'on' : 'off';
        }
        return $return;
    }

 /**
  * @covers Jetpack_Heartbeat::generate_stats_array
  * @since 3.9.0
  */
 public function test_generate_stats_array()
 {
     $prefix = 'test';
     $result = Jetpack_Heartbeat::generate_stats_array($prefix);
     $this->assertNotEmpty($result);
     $this->assertArrayHasKey($prefix . 'version', $result);
 }