Silence stdout

Referred to https://gist.github.com/adamstegman/926858

spec/spec_helper.rb

@@ -22,6 +22,9 @@
 RSpec.configure do |config|
   config.include LoadFixtureHelper
 
+  config.before(:all) { silence_stdout }
+  config.after(:all){ enable_stdout }
+
   # rspec-expectations config goes here. You can use an alternate
   # assertion/expectation library such as wrong or the stdlib/minitest
   # assertions if you prefer.
@@ -106,3 +109,15 @@
   Kernel.srand config.seed
 =end
 end
+
+# Redirects stdout to /dev/null.
+def silence_stdout
+  @orig_stdout = $stdout
+  $stdout = File.new('/dev/null', 'w')
+end
+
+# Replace stdout so anything else is output correctly.
+def enable_stdout
+  $stdout = @orig_stdout
+  @orig_stdout = nil
+end