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guix/tests/channels.scm

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; 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 (test-channels)
#:use-module (guix channels)
#:use-module ((guix build syscalls) #:select (mkdtemp!))
#:use-module (guix tests)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-64)
#:use-module (ice-9 match))
(test-begin "channels")
(define* (make-instance #:key
(name 'fake)
(commit "cafebabe")
(spec #f))
(define instance-dir (mkdtemp! "/tmp/checkout.XXXXXX"))
(and spec
(with-output-to-file (string-append instance-dir "/.guix-channel")
(lambda _ (format #t "~a" spec))))
((@@ (guix channels) channel-instance)
name commit instance-dir))
(define instance--boring (make-instance))
(define instance--no-deps
(make-instance #:spec
'(channel
(version 0)
(dependencies
(channel
(name test-channel)
(url "https://example.com/test-channel"))))))
(define instance--simple
(make-instance #:spec
'(channel
(version 0)
(dependencies
(channel
(name test-channel)
(url "https://example.com/test-channel"))))))
(define instance--with-dupes
(make-instance #:spec
'(channel
(version 0)
(dependencies
(channel
(name test-channel)
(url "https://example.com/test-channel"))
(channel
(name test-channel)
(url "https://example.com/test-channel")
(commit "abc1234"))
(channel
(name test-channel)
(url "https://example.com/test-channel-elsewhere"))))))
(define read-channel-metadata
(@@ (guix channels) read-channel-metadata))
(test-equal "read-channel-metadata returns #f if .guix-channel does not exist"
#f
(read-channel-metadata instance--boring))
(test-assert "read-channel-metadata returns <channel-metadata>"
(every (@@ (guix channels) channel-metadata?)
(map read-channel-metadata
(list instance--no-deps
instance--simple
instance--with-dupes))))
(test-assert "read-channel-metadata dependencies are channels"
(let ((deps ((@@ (guix channels) channel-metadata-dependencies)
(read-channel-metadata instance--simple))))
(match deps
(((? channel? dep)) #t)
(_ #f))))
(test-assert "latest-channel-instances includes channel dependencies"
(let* ((channel (channel
(name 'test)
(url "test")))
(test-dir (channel-instance-checkout instance--simple)))
(mock ((guix git) latest-repository-commit
(lambda* (store url #:key ref)
(match url
("test" (values test-dir 'whatever))
(_ (values "/not-important" 'not-important)))))
(let ((instances (latest-channel-instances #f (list channel))))
(and (eq? 2 (length instances))
(lset= eq?
'(test test-channel)
(map (compose channel-name channel-instance-channel)
instances)))))))
(test-assert "latest-channel-instances excludes duplicate channel dependencies"
(let* ((channel (channel
(name 'test)
(url "test")))
(test-dir (channel-instance-checkout instance--with-dupes)))
(mock ((guix git) latest-repository-commit
(lambda* (store url #:key ref)
(match url
("test" (values test-dir 'whatever))
(_ (values "/not-important" 'not-important)))))
(let ((instances (latest-channel-instances #f (list channel))))
(and (eq? 2 (length instances))
(lset= eq?
'(test test-channel)
(map (compose channel-name channel-instance-channel)
instances))
;; only the most specific channel dependency should remain,
;; i.e. the one with a specified commit.
(find (lambda (instance)
(and (eq? (channel-name
(channel-instance-channel instance))
'test-channel)
(eq? (channel-commit
(channel-instance-channel instance))
'abc1234)))
instances))))))
(test-end "channels")