czmq: fix brew test

The czmq self test can fail depending on the location
and permissions of the folder from which it is launched.
It appears to pass when launched from its own Cellar.

Closes #30243.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/Library/Formula/czmq.rb b/Library/Formula/czmq.rb
index 950b8aa60..9fd81695c 100644
--- a/Library/Formula/czmq.rb
+++ b/Library/Formula/czmq.rb
@@ -27,6 +27,8 @@ class Czmq < Formula
   end
 
   test do
-    system "#{bin}/czmq_selftest"
+    bin.cd do
+      system "#{bin}/czmq_selftest"
+    end
   end
 end