tracebox 0.4.2

add a test

Closes #18830.

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

Formula/tracebox.rb

@@ -1,10 +1,22 @@
 class Tracebox < Formula
   desc "Middlebox detection tool"
   homepage "http://www.tracebox.org/"
-  url "https://github.com/tracebox/tracebox.git", :tag => "v0.3.1",
-                                                  :revision => "aec062dcf7198c8b8f3b90ee4216e929ebf0ffcb"
   head "https://github.com/tracebox/tracebox.git"
 
+  stable do
+    url "https://github.com/tracebox/tracebox.git",
+        :tag => "v0.4.2",
+        :revision => "2e3326500ddf084bf761e83516909538d26240da"
+
+    # Remove for > 0.4.2
+    # Upstream commit from 2 Oct 2017 "Remove [--dirty] from the displayed
+    # version string"
+    patch do
+      url "https://github.com/tracebox/tracebox/commit/5ee627c.patch?full_index=1"
+      sha256 "af6fda9484e1188acf35c0fb5f871cebc608c8122e5ad1d94569fe30321549cc"
+    end
+  end
+
   bottle do
     cellar :any
     sha256 "86e2c6f4f0ac81f42ea0eeea2545e0e994090b91bcc3a29df9ead84981ec369b" => :high_sierra
@@ -41,4 +53,8 @@ class Tracebox < Formula
     elevated privileges.
     EOS
   end
+
+  test do
+    system bin/"tracebox", "-v"
+  end
 end