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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2018 Gábor Boskovits <boskovits@gmail.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu tests monitoring)
+ #:use-module (gnu services)
+ #:use-module (gnu services monitoring)
+ #:use-module (gnu services networking)
+ #:use-module (gnu system vm)
+ #:use-module (gnu tests)
+ #:use-module (guix gexp)
+ #:export (%test-prometheus-node-exporter))
+
+
+;;;
+;;; Prometheus Node Exporter
+;;;
+
+(define* (run-prometheus-node-exporter-server-test name test-os)
+ "Run tests in %PROMETHEUS-NODE-EXPORTER-OS, which has prometheus-node-exporter running."
+ (define os
+ (marionette-operating-system
+ test-os
+ #:imported-modules '((gnu services herd))))
+
+ (define vm
+ (virtual-machine
+ (operating-system os)
+ (port-forwardings '((8080 . 9100)))))
+
+ (define test
+ (with-imported-modules '((gnu build marionette))
+ #~(begin
+ (use-modules (srfi srfi-11)
+ (srfi srfi-64)
+ (gnu build marionette)
+ (web client)
+ (web response))
+
+ (define marionette
+ (make-marionette (list #$vm)))
+
+ (mkdir #$output)
+ (chdir #$output)
+
+ (test-begin #$name)
+
+ (test-assert "prometheus-node-exporter running"
+ (marionette-eval
+ '(begin
+ (use-modules (gnu services herd))
+ (match (start-service 'prometheus-node-exporter)
+ (#f #f)
+ (('service response-parts ...)
+ (match (assq-ref response-parts 'running)
+ ((pid) (number? pid))))))
+ marionette))
+
+ (test-equal "http-get"
+ 200
+ (begin
+ (wait-for-tcp-port 9100 marionette)
+ (let-values (((response text)
+ (http-get "http://localhost:8080")))
+ (response-code response))))
+
+ (test-end)
+ (exit (= (test-runner-fail-count (test-runner-current)) 0)))))
+
+ (gexp->derivation (string-append name "-test") test))
+
+(define %prometheus-node-exporter-os
+ (simple-operating-system
+ (dhcp-client-service)
+ (service prometheus-node-exporter-service-type
+ (prometheus-node-exporter-configuration))))
+
+(define %test-prometheus-node-exporter
+ (system-test
+ (name "prometheus-node-exporter")
+ (description "Connect to a running prometheus-node-exporter server.")
+ (value (run-prometheus-node-exporter-server-test
+ name %prometheus-node-exporter-os))))