duff: Add test.

Compares two equal files and asserts expected output.
2016-05-06 09:29:20 -04:00 · 2016-05-06 09:29:20 -04:00 · d3d1b4d224
commit d3d1b4d224
parent f93d33e6b5
1 changed files with 13 additions and 0 deletions
--- a/Formula/duff.rb
+++ b/Formula/duff.rb
@ -17,4 +17,17 @@ class Duff < Formula
                          "--mandir=#{man}"
    system "make", "install"
  end
+
+  test do
+    expected = <<-EOS.undent
+      2 files in cluster 1 (6 bytes, digest 8843d7f92416211de9ebb963ff4ce28125932878)
+      cmp1
+      cmp2
+    EOS
+
+    (testpath/"cmp1").write "foobar"
+    (testpath/"cmp2").write "foobar"
+
+    assert_equal expected, shell_output("#{bin}/duff cmp1 cmp2")
+  end
 end