Update terminalimageviewer.rb

terminalimageviewer.rb

@@ -4,6 +4,7 @@ class Terminalimageviewer < Formula
   url "https://github.com/stefanhaustein/TerminalImageViewer/archive/v1.1.0.tar.gz"
   sha256 "727ddaa048643cb0a13e23bc308415060d99d8b1853883ad339ad7b952050d61"
   head "https://github.com/stefanhaustein/TerminalImageViewer.git"
+  uses_from_macos "curl" => :test
   depends_on "gcc" => :build unless OS.linux?
   depends_on "imagemagick"
 
@@ -30,8 +31,10 @@ class Terminalimageviewer < Formula
 
   test do
     # Downloads a public domain test file from wikimedia commons and displays it.
-    # For some reason, when you redirect the output it is blank.
-    assert_equal "",
-    shell_output("#{bin}/tiv -0 https://upload.wikimedia.org/wikipedia/commons/2/24/Cornell_box.png").strip
+    # NOTE: Test will fail. Will fix when I get to my mac.
+    system "curl -o \"test.png\" https://upload.wikimedia.org/wikipedia/commons/2/24/Cornell_box.png"
+    assert_equal "▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+",
+    shell_output("#{bin}/tiv -0 -w 400 -h 400 test.png").strip
   end
 end