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-rw-r--r--tests/services/configuration.scm20
1 files changed, 19 insertions, 1 deletions
diff --git a/tests/services/configuration.scm b/tests/services/configuration.scm
index 548c400bfe..649dad26e8 100644
--- a/tests/services/configuration.scm
+++ b/tests/services/configuration.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
+;;; Copyright © 2021, 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2022 Ludovic Courtès <ludo@gnu.org>
;;;
@@ -141,6 +141,24 @@
(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