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-rw-r--r--tests/union.scm42
1 files changed, 41 insertions, 1 deletions
diff --git a/tests/union.scm b/tests/union.scm
index b63edc757b..aa95cae001 100644
--- a/tests/union.scm
+++ b/tests/union.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2017 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -124,6 +124,46 @@
;; new 'bin' sub-directory in the profile.
(eq? 'directory (stat:type (lstat "bin"))))))))
+(test-assert "union-build collision first & last"
+ (let* ((guile (package-derivation %store %bootstrap-guile))
+ (fake (build-expression->derivation
+ %store "fake-guile"
+ '(begin
+ (use-modules (guix build utils))
+ (let ((out (assoc-ref %outputs "out")))
+ (mkdir-p (string-append out "/bin"))
+ (call-with-output-file (string-append out "/bin/guile")
+ (const #t))))
+ #:modules '((guix build utils))))
+ (builder (lambda (policy)
+ `(begin
+ (use-modules (guix build union)
+ (srfi srfi-1))
+ (union-build (assoc-ref %outputs "out")
+ (map cdr %build-inputs)
+ #:resolve-collision ,policy))))
+ (drv1
+ (build-expression->derivation %store "union-first"
+ (builder 'first)
+ #:inputs `(("guile" ,guile)
+ ("fake" ,fake))
+ #:modules '((guix build union))))
+ (drv2
+ (build-expression->derivation %store "union-last"
+ (builder 'last)
+ #:inputs `(("guile" ,guile)
+ ("fake" ,fake))
+ #:modules '((guix build union)))))
+ (and (build-derivations %store (list drv1 drv2))
+ (with-directory-excursion (derivation->output-path drv1)
+ (string=? (readlink "bin/guile")
+ (string-append (derivation->output-path guile)
+ "/bin/guile")))
+ (with-directory-excursion (derivation->output-path drv2)
+ (string=? (readlink "bin/guile")
+ (string-append (derivation->output-path fake)
+ "/bin/guile"))))))
+
(test-assert "union-build #:create-all-directories? #t"
(let* ((build `(begin
(use-modules (guix build union))