improve formula (#3)

Formula/sshpass.rb

@@ -1,20 +1,19 @@
-require 'formula'
-
 class Sshpass < Formula
+  desc "Non-interactive ssh password auth Files"
+  homepage "https://sourceforge.net/projects/sshpass/"
   url "https://downloads.sourceforge.net/project/sshpass/sshpass/1.09/sshpass-1.09.tar.gz"
   sha256 "71746e5e057ffe9b00b44ac40453bf47091930cba96bbea8dc48717dedc49fb7"
-  homepage 'https://sourceforge.net/projects/sshpass'
-
-  depends_on 'gnu-sed'
+  license "GPL-2.0-or-later"
 
   def install
-    system "./configure", "--disable-debug",
-                          "--disable-dependency-tracking",
-                          "--prefix=#{prefix}"
-    system "make install"
+    system "./configure", *std_configure_args, "--disable-silent-rules"
+    system "make", "install"
   end
 
-  def test
-    system "sshpass"
+  test do
+    assert_match "ssh: Could not resolve hostname host: nodename nor servname provided, or not known",
+      shell_output("#{bin}/sshpass -p mypassword ssh username@host touch foo 2>&1", 255)
+
+    assert_match "sshpass #{version}", shell_output("#{bin}/sshpass -V")
   end
 end