From 23a0a019db9e6fa6878d83579fa64b50fcb47935 Mon Sep 17 00:00:00 2001
From: Michael Cho <michael@michaelcho.dev>
Date: Thu, 9 Jan 2025 11:23:38 -0500
Subject: [PATCH] heksa: update test

---
 Formula/h/heksa.rb | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/Formula/h/heksa.rb b/Formula/h/heksa.rb
index 247071c35bc1e9..ba9761d8d033c2 100644
--- a/Formula/h/heksa.rb
+++ b/Formula/h/heksa.rb
@@ -31,18 +31,11 @@ def install
 
   test do
     require "pty"
-
-    r, _w, pid = PTY.spawn("#{bin}/heksa -l 16 -f asc -o no #{test_fixtures("test.png")}")
-
-    # remove ANSI colors
-    begin
-      output = r.read.gsub(/\e\[([;\d]+)?m/, "")
-      assert_match(/^.PNG/, output)
-    rescue Errno::EIO
-      # GNU/Linux raises EIO when read is done on closed pty
+    PTY.spawn(bin/"heksa", "-l", "16", "-f", "asc", "-o", "no", test_fixtures("test.png")) do |r, _w, pid|
+      assert_predicate Process::Status.wait(pid), :success?
+      output = OS.mac? ? r.read : r.read_nonblock(1024)
+      # remove ANSI colors
+      assert_match(/^\.PNG/, output.gsub(/\e\[([;\d]+)?m/, ""))
     end
-
-    Process.wait(pid)
-    assert_equal 0, $CHILD_STATUS.exitstatus
   end
 end