bsdconv 11.4

also modernize the test

Closes #2751.

Signed-off-by: ilovezfs <ilovezfs@icloud.com>

Formula/bsdconv.rb

@@ -1,9 +1,8 @@
 class Bsdconv < Formula
   desc "Charset/encoding converter library"
   homepage "https://github.com/buganini/bsdconv"
-  url "https://github.com/buganini/bsdconv/archive/11.3.1.tar.gz"
-  sha256 "b0656011fd40ec440e9966bba44d330a6213fdd198c487c87bc61869ef7fea9e"
-
+  url "https://github.com/buganini/bsdconv/archive/11.4.tar.gz"
+  sha256 "61919c8a7bae973794ef8b13c7e105ae4570cd832851570ca76a47c731cade6c"
   head "https://github.com/buganini/bsdconv.git"
 
   bottle do
@@ -18,13 +17,8 @@ class Bsdconv < Formula
   end
 
   test do
-    require "open3"
-    Open3.popen3("#{bin}/bsdconv", "big5:utf-8") do |stdin, stdout, _|
-      stdin.write("\263\134\245\134\273\134")
-      stdin.close
-      result = stdout.read
-      result.force_encoding(Encoding::UTF_8) if result.respond_to?(:force_encoding)
-      assert_equal "許功蓋", result
-    end
+    output = pipe_output("#{bin}/bsdconv BIG5:UTF-8", "\263\134\273\134")
+    output.force_encoding("UTF-8") if output.respond_to?(:force_encoding)
+    assert_equal "許蓋", output
   end
 end