Run IPv6 tests only on some operating systems.

* tests/014/dgram-stream.tl (test): Renamed to
dgram-test since now this includes common.tl which
has a macro called test.
Only include af-inet6 in the family list if
the OS is GNU/Linux, Darwin or Cygwin.

* tests/common.tl (osname): New function.

2 files changed, 11 insertions, 4 deletions

diff --git a/tests/014/dgram-stream.tl b/tests/014/dgram-stream.tl
index feb272ba..b2ac1165 100644
--- a/tests/014/dgram-stream.tl
+++ b/tests/014/dgram-stream.tl
@@ -1,3 +1,4 @@
+(load "../common.tl")
 (load "../sock-common.tl")
 
 (defvar family)
@@ -20,7 +21,7 @@
     (print nil cli-sock)
     (flush-stream cli-sock)))
 
-(defun test ()
+(defun dgram-test ()
   (let* ((svc-sock (open-socket family sock-dgram))
          (svc-addr (bindfree svc-sock 1025 65535))
          (server-pid (fork)))
@@ -34,6 +35,8 @@
 
 (if (and (fboundp 'open-socket)
          (fboundp 'fork))
-  (each ((family (list af-inet af-inet6)))
-    (unless (test)
-      (error "test failed"))))
+  (let ((maybe-ipv6 (if (memqual (osname) '("GNU/Linux" "Darwin" "Cygwin"))
+                      (list af-inet6))))
+    (each ((family ^(,af-inet ,*maybe-ipv6)))
+      (unless (dgram-test)
+        (error "test failed")))))
diff --git a/tests/common.tl b/tests/common.tl
index 301a5402..ea2be1d5 100644
--- a/tests/common.tl
+++ b/tests/common.tl
@@ -19,3 +19,7 @@
 
 (defmacro stest (expr expected)
   ^(vtest ,^(tostring ,expr) ,expected))
+
+(defun osname ()
+  (with-stream (u (open-command "(uname -o || uname) 2> /dev/null"))
+    (get-line u)))