gnu: guile-ac-d-bus: Run test suite.

* gnu/packages/patches/guile-ac-d-bus-fix-tests.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/guile-xyz.scm (guile-ac-d-bus)
[source]: Apply patch.
[phases]{check}: New phase.
[native-inputs]: Add bash-minimal.

gnu/local.mk

@@ -1236,6 +1236,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/guile-3.0-relocatable.patch		\
   %D%/packages/patches/guile-linux-syscalls.patch		\
   %D%/packages/patches/guile-3.0-linux-syscalls.patch		\
+  %D%/packages/patches/guile-ac-d-bus-fix-tests.patch		\
   %D%/packages/patches/guile-cross-compilation.patch		\
   %D%/packages/patches/guile-fibers-destroy-peer-schedulers.patch \
   %D%/packages/patches/guile-fibers-wait-for-io-readiness.patch \

gnu/packages/guile-xyz.scm

@@ -3843,7 +3843,8 @@ (define-public guile-ac-d-bus
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "0rl809qimhgz6b0rixakb42r2l4g53jr09a2g0s1hxgab0blz0kb"))))
+                "0rl809qimhgz6b0rixakb42r2l4g53jr09a2g0s1hxgab0blz0kb"))
+              (patches (search-patches "guile-ac-d-bus-fix-tests.patch"))))
     (build-system guile-build-system)
     (arguments
      (list
@@ -3884,12 +3885,22 @@ (define (guile-sls->sls file)
             (lambda _
               (with-directory-excursion "docs"
                 (invoke "makeinfo" "ac-d-bus"))))
+          (add-after 'build-doc 'check
+            (lambda* (#:key (tests? #t) #:allow-other-keys)
+              (when tests?
+                ;; There is no locale for the ö character, which crashes
+                ;; substitute*; reset the conversion strategy to workaround it.
+                (with-fluids ((%default-port-conversion-strategy 'substitute))
+                  (substitute* (find-files "tests")
+                    (("#!/usr/bin/env scheme-script")
+                     (string-append "#!" (which "guile")))))
+                (invoke "./run-tests.sh"))))
           (add-after 'install 'install-doc
             (lambda _
               (install-file "docs/ac-d-bus.info"
                             (string-append #$output "/share/info")))))))
     (native-inputs
-     (list guile-3.0 texinfo))
+     (list bash-minimal guile-3.0 texinfo))
     (propagated-inputs
      (list guile-packrat))
     (synopsis "D-Bus protocol implementation in R6RS Scheme")

gnu/packages/patches/guile-ac-d-bus-fix-tests.patch

@@ -0,0 +1,28 @@
+Submitted upstream: https://gitlab.com/weinholt/ac-d-bus/-/merge_requests/3
+
+diff --git a/tests/test-signature.sps b/tests/test-signature.sps
+index 278401b..cc5574f 100755
+--- a/tests/test-signature.sps
++++ b/tests/test-signature.sps
+@@ -43,6 +43,7 @@
+             (format-type-signature '(message BYTE BYTE BYTE BYTE UINT32 UINT32
+                                              (ARRAY (STRUCT BYTE VARIANT)))))
+ 
++(define fail-count (test-runner-fail-count (test-runner-get)))
+ (test-end)
+ 
+-(exit (if (zero? (test-runner-fail-count (test-runner-get))) 0 1))
++(exit (if (zero? fail-count) 0 1))
+diff --git a/tests/test-wire.sps b/tests/test-wire.sps
+index c3354bf..06ae73b 100755
+--- a/tests/test-wire.sps
++++ b/tests/test-wire.sps
+@@ -147,6 +147,7 @@
+                   #x08 #x01 #x67 #x00  #x00 #x00 #x00 #x00  #x05 #x01 #x75 #x00  #x04 #x00 #x00 #x00
+                   #x07 #x01 #x73 #x00  #x06 #x00 #x00 #x00  #x3A #x31 #x2E #x32  #x39 #x38 #x00 #x00)))
+ 
++(define fail-count (test-runner-fail-count (test-runner-get)))
+ (test-end)
+ 
+-(exit (if (zero? (test-runner-fail-count (test-runner-get))) 0 1))
++(exit (if (zero? fail-count) 0 1))