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+;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
+;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of Guix.
+;;;
+;;; 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.
+;;;
+;;; 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 Guix. If not, see <http://www.gnu.org/licenses/>.
+
+
+(define-module (test-union)
+ #:use-module (guix store)
+ #:use-module (guix utils)
+ #:use-module (guix derivations)
+ #:use-module (guix packages)
+ #:use-module (guix build union)
+ #:use-module ((guix build utils)
+ #:select (with-directory-excursion directory-exists?))
+ #:use-module (srfi srfi-64)
+ #:use-module (ice-9 match))
+
+;; Exercise the (guix build union) module.
+
+(define %store
+ (false-if-exception (open-connection)))
+
+(define %bootstrap-guile
+ (@@ (distro packages base) %bootstrap-guile))
+
+(when %store
+ ;; By default, use %BOOTSTRAP-GUILE for the current system.
+ (let ((drv (package-derivation %store %bootstrap-guile)))
+ (%guile-for-build drv)))
+
+
+(test-begin "union")
+
+(test-equal "tree-union, empty"
+ '()
+ (tree-union '()))
+
+(test-equal "tree-union, leaves only"
+ '(a b c d)
+ (tree-union '(a b c d)))
+
+(test-equal "tree-union, simple"
+ '((bin ls touch make awk gawk))
+ (tree-union '((bin ls touch)
+ (bin make)
+ (bin awk gawk))))
+
+(test-equal "tree-union, several levels"
+ '((share (doc (make README) (coreutils README)))
+ (bin ls touch make))
+ (tree-union '((bin ls touch)
+ (share (doc (coreutils README)))
+ (bin make)
+ (share (doc (make README))))))
+
+(test-skip (if %store 0 1))
+
+(test-assert "union-build"
+ (let* ((inputs (map (match-lambda
+ ((name package)
+ `(,name ,(package-derivation %store package))))
+ (@@ (distro packages base) %bootstrap-inputs)))
+ (builder `(begin
+ (use-modules (guix build union))
+ (union-build (assoc-ref %outputs "out")
+ (map cdr %build-inputs))))
+ (drv
+ (build-expression->derivation %store "union-test"
+ (%current-system)
+ builder inputs
+ #:modules '((guix build union)))))
+ (and (build-derivations %store (list (pk 'drv drv)))
+ (with-directory-excursion (derivation-path->output-path drv)
+ (and (file-exists? "bin/touch")
+ (file-exists? "bin/gcc")
+ (file-exists? "bin/ld")
+ (file-exists? "lib/libc.so")
+ (directory-exists? "lib/gcc")
+ (file-exists? "include/unistd.h"))))))
+
+(test-end)
+
+
+(exit (= (test-runner-fail-count (test-runner-current)) 0))
+
+;;; Local Variables:
+;;; eval: (put 'test-assert 'scheme-indent-function 1)
+;;; eval: (put 'test-equal 'scheme-indent-function 1)
+;;; eval: (put 'call-with-input-string 'scheme-indent-function 1)
+;;; End: