1 files changed, 16 insertions, 0 deletions
diff --git a/Library/Homebrew/test/testing_env.rb b/Library/Homebrew/test/testing_env.rb
index d960d35d5..60434aded 100644
--- a/Library/Homebrew/test/testing_env.rb
+++ b/Library/Homebrew/test/testing_env.rb
@@ -1,6 +1,22 @@
 $:.unshift File.expand_path("../..", __FILE__)
 $:.unshift File.expand_path("../lib", __FILE__)
 
+# This must be at the top
+if ENV["HOMEBREW_TESTS_COVERAGE"]
+  require "simplecov"
+  SimpleCov.start do
+    tests_path = File.dirname(__FILE__)
+
+    minimum_coverage 50
+    coverage_dir File.expand_path("#{tests_path}/coverage")
+    root File.expand_path("#{tests_path}/..")
+
+    add_filter "Homebrew/test"
+    add_filter "vendor/bundle"
+    add_filter "Homebrew/vendor"
+  end
+end
+
 require "global"
 
 # Test environment setup