1 files changed, 12 insertions, 1 deletions
diff --git a/test/test_helper.rb b/test/test_helper.rb
index f809af3..4243606 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -41,7 +41,18 @@ def redirect_test_io
      STDOUT.reopen(orig_out)
    end
  end
-    
+
+# which(1) exit codes cannot be trusted on some systems
+# We use UNIX shell utilities in some tests because we don't trust
+# ourselves to write Ruby 100% correctly :)
+def which(bin)
+  ex = ENV['PATH'].split(/:/).detect do |x|
+    x << "/#{bin}"
+    File.executable?(x)
+  end or warn "`#{bin}' not found in PATH=#{ENV['PATH']}"
+  ex
+end
+
  # Either takes a string to do a get request against, or a tuple of [URI, HTTP] where
  # HTTP is some kind of Net::HTTP request object (POST, HEAD, etc.)
  def hit(uris)