a2ps: add test

Closes #35388.

1 files changed, 6 insertions, 0 deletions

diff --git a/Library/Formula/a2ps.rb b/Library/Formula/a2ps.rb
index 9d9d95bdb..aae13e7f1 100644
--- a/Library/Formula/a2ps.rb
+++ b/Library/Formula/a2ps.rb
@@ -23,4 +23,10 @@ class A2ps < Formula
                           "--prefix=#{prefix}"
     system "make", "install"
   end
+
+  test do
+    (testpath/"test.txt").write("Hello World!\n")
+    system "#{bin}/a2ps", "test.txt", "-o", "test.ps"
+    assert File.read("test.ps").start_with?("")
+  end
 end