From 6a5f50657d723334942e525cff39ffa204a7f008 Mon Sep 17 00:00:00 2001
From: Zhiming Wang <zmwangx@gmail.com>
Date: Thu, 29 Sep 2016 10:21:57 -0400
Subject: [PATCH] exiftool: improve test

---
 Formula/exiftool.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Formula/exiftool.rb b/Formula/exiftool.rb
index f0e0a7e731..c19acf7657 100644
--- a/Formula/exiftool.rb
+++ b/Formula/exiftool.rb
@@ -29,6 +29,8 @@ class Exiftool < Formula
   end
 
   test do
-    system bin/"exiftool"
+    test_image = test_fixtures("test.jpg")
+    assert_match %r{MIME Type\s+: image/jpeg},
+                 shell_output("#{bin}/exiftool #{test_image}")
   end
 end