From 67d84d6335ae84ac7c217061570e6b968060073c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Thu, 4 May 2017 11:43:01 +0200
Subject: [PATCH] tests: Use 'fold-module-public-variables' for discovery.

* gnu/tests.scm (fold-system-tests): Write in terms of
'fold-module-public-variables'.
---
 gnu/tests.scm | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/gnu/tests.scm b/gnu/tests.scm
index 0df6e5a2ef..810711ab91 100644
--- a/gnu/tests.scm
+++ b/gnu/tests.scm
@@ -27,7 +27,7 @@ (define-module (gnu tests)
   #:use-module (gnu services)
   #:use-module (gnu services base)
   #:use-module (gnu services shepherd)
-  #:use-module ((guix discovery) #:select (scheme-modules))
+  #:use-module (guix discovery)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-9 gnu)
   #:use-module (ice-9 match)
@@ -263,17 +263,12 @@ (define (test-modules)
 (define (fold-system-tests proc seed)
   "Invoke PROC on each system test, passing it the test and the previous
 result."
-  (fold (lambda (module result)
-          (fold (lambda (thing result)
-                  (if (system-test? thing)
-                      (proc thing result)
-                      result))
-                result
-                (module-map (lambda (sym var)
-                              (false-if-exception (variable-ref var)))
-                            module)))
-        '()
-        (test-modules)))
+  (fold-module-public-variables (lambda (obj result)
+                                  (if (system-test? obj)
+                                      (cons obj result)
+                                      result))
+                                '()
+                                (test-modules)))
 
 (define (all-system-tests)
   "Return the list of system tests."