ffmpeg: Add test and remove `require "formula"`

Closes #35398.

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

1 files changed, 7 insertions, 2 deletions

diff --git a/Library/Formula/ffmpeg.rb b/Library/Formula/ffmpeg.rb
index 361e65dc4..da5cfe07e 100644
--- a/Library/Formula/ffmpeg.rb
+++ b/Library/Formula/ffmpeg.rb
@@ -1,5 +1,3 @@
-require "formula"
-
 class Ffmpeg < Formula
   homepage "https://ffmpeg.org/"
   url "https://www.ffmpeg.org/releases/ffmpeg-2.5.2.tar.bz2"
@@ -169,4 +167,11 @@ class Ffmpeg < Formula
       EOS
     end
   end
+
+  test do
+    # Create an example mp4 file
+    system "#{bin}/ffmpeg", "-y", "-filter_complex",
+        "testsrc=rate=1:duration=1", "#{testpath}/video.mp4"
+    assert (testpath/"video.mp4").exist?
+  end
 end