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-rw-r--r--tests/build-utils.scm24
1 files changed, 23 insertions, 1 deletions
diff --git a/tests/build-utils.scm b/tests/build-utils.scm
index 654b480ed9..31be7ff80f 100644
--- a/tests/build-utils.scm
+++ b/tests/build-utils.scm
@@ -1,6 +1,7 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2015, 2016, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -18,7 +19,7 @@
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
-(define-module (test-build-utils)
+(define-module (test build-utils)
#:use-module (guix tests)
#:use-module (guix build utils)
#:use-module ((guix utils)
@@ -241,4 +242,25 @@ print('hello world')"))
"/some/other/path")))
#f)))))
+(test-equal "substitute*, text contains a NUL byte, UTF-8"
+ "c\0d"
+ (with-fluids ((%default-port-encoding "UTF-8")
+ (%default-port-conversion-strategy 'error))
+ ;; The GNU libc is locale sensitive. Depending on the value of LANG, the
+ ;; test could fail with "string contains #\\nul character: ~S" or "cannot
+ ;; convert wide string to output locale".
+ (setlocale LC_ALL "en_US.UTF-8")
+ (call-with-temporary-output-file
+ (lambda (file port)
+ (format port "a\0b")
+ (flush-output-port port)
+
+ (substitute* file
+ (("a") "c")
+ (("b") "d"))
+
+ (with-input-from-file file
+ (lambda _
+ (get-string-all (current-input-port))))))))
+
(test-end)