screenbrightness: add test and modernize

Closes #35781.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/Library/Formula/screenbrightness.rb b/Library/Formula/screenbrightness.rb
index 9eac058a1..8224b888d 100644
--- a/Library/Formula/screenbrightness.rb
+++ b/Library/Formula/screenbrightness.rb
@@ -1,12 +1,14 @@
-require 'formula'
-
 class Screenbrightness < Formula
-  homepage 'https://github.com/jmstacey/screenbrightness'
-  url 'https://github.com/jmstacey/screenbrightness/archive/1.1.tar.gz'
-  sha1 'f9750733ac298837f519fcfedcbfec74f781bc68'
+  homepage "https://github.com/jmstacey/screenbrightness"
+  url "https://github.com/jmstacey/screenbrightness/archive/1.1.tar.gz"
+  sha1 "f9750733ac298837f519fcfedcbfec74f781bc68"
 
   def install
     system "make"
     system "make", "prefix=#{prefix}", "install"
   end
+
+  test do
+    system "#{bin}/screenbrightness", "-l"
+  end
 end