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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021, 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2022 Ludovic Courtès <ludo@gnu.org>
;;;
;;; 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 (tests services configuration)
#:use-module (gnu services configuration)
#:use-module (guix diagnostics)
#:use-module (guix gexp)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-64))
;;; Tests for the (gnu services configuration) module.
(test-begin "services-configuration")
(define (serialize-number field value)
(format #f "~a=~a" field value))
;;;
;;; define-configuration macro.
;;;
(define-configuration port-configuration
(port (number 80) "The port number.")
(no-serialization))
(test-equal "default value, no serialization"
80
(port-configuration-port (port-configuration)))
(test-equal "wrong type for a field"
'("configuration.scm" 57 11) ;error location
(guard (c ((configuration-error? c)
(let ((loc (error-location c)))
(list (basename (location-file loc))
(location-line loc)
(location-column loc)))))
(port-configuration
;; This is line 56; the test relies on line/column numbers!
(port "This is not a number!"))))
(define-configuration port-configuration-cs
(port (number 80) "The port number." empty-serializer))
(test-equal "default value, custom serializer"
80
(port-configuration-cs-port (port-configuration-cs)))
(define-configuration port-configuration-ndv
(port (number) "The port number."))
(test-equal "no default value, provided"
55
(port-configuration-ndv-port (port-configuration-ndv
(port 55))))
(test-assert "no default value, not provided"
(guard (c ((configuration-error? c)
#t))
(port-configuration-ndv-port (port-configuration-ndv))))
(define (custom-number-serializer name value)
(format #f "~a = ~a;" name value))
(define-configuration serializable-configuration
(port (number 80) "The port number." custom-number-serializer))
(test-assert "serialize-configuration"
(gexp?
(let ((config (serializable-configuration)))
(serialize-configuration config serializable-configuration-fields))))
(define-configuration serializable-configuration
(port (number 80) "The port number." custom-number-serializer)
(no-serialization))
(test-assert "serialize-configuration with no-serialization"
;; When serialization is disabled, the serializer is set to #f, so
;; attempting to use it fails with a 'wrong-type-arg' error.
(not (false-if-exception
(let ((config (serializable-configuration)))
(serialize-configuration config serializable-configuration-fields)))))
(define (custom-prefix-serialize-integer field-name name) name)
(define-configuration configuration-with-prefix
(port (integer 10) "The port number.")
(prefix custom-prefix-))
(test-assert "serialize-configuration with prefix"
(gexp?
(let ((config (configuration-with-prefix)))
(serialize-configuration config configuration-with-prefix-fields))))
;;;
;;; define-maybe macro.
;;;
(define-maybe number)
(define-configuration config-with-maybe-number
(port (maybe-number 80) "")
(count maybe-number ""))
(test-equal "maybe value serialization"
"port=80"
(serialize-maybe-number "port" 80))
(define (config-with-maybe-number->string x)
(eval (gexp->approximate-sexp
(serialize-configuration x config-with-maybe-number-fields))
(current-module)))
(test-equal "maybe value serialization of the instance"
"port=42count=43"
(config-with-maybe-number->string
(config-with-maybe-number
(port 42)
(count 43))))
(test-equal "maybe value serialization of the instance, unspecified"
"port=42"
(config-with-maybe-number->string
(config-with-maybe-number
(port 42))))
(define (serialize-symbol name value)
(format #f "~a=~a~%" name value))
(define-maybe symbol)
(define-configuration config-with-maybe-symbol
(protocol maybe-symbol ""))
;;; Maybe symbol values are currently seen as serializable, because the
;;; unspecified value is 'unset, which is a symbol itself.
;;; TODO: Remove expected fail marker after resolution.
(test-expect-fail 1)
(test-equal "symbol maybe value serialization, unspecified"
""
(gexp->approximate-sexp
(serialize-configuration (config-with-maybe-symbol)
config-with-maybe-symbol-fields)))
(define-maybe/no-serialization string)
(define-configuration config-with-maybe-string/no-serialization
(name (maybe-string) "The name of the item.")
(no-serialization))
(test-assert "maybe value without serialization no procedure bound"
(not (defined? 'serialize-maybe-string)))
(test-assert "maybe type, no default"
(eq? 'unset
(config-with-maybe-string/no-serialization-name
(config-with-maybe-string/no-serialization))))
(test-assert "maybe type, with default"
(equal?
"foo"
(config-with-maybe-string/no-serialization-name
(config-with-maybe-string/no-serialization
(name "foo")))))
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