From f5d6d80d5bac2c83a89021481812b461c54cfba3 Mon Sep 17 00:00:00 2001
From: Misty De Meo
Date: Sat, 25 Apr 2015 02:03:00 -0700
Subject: ENV.deparallelize: add block form for temporary change

Closes Homebrew/homebrew#39026.
---
 Library/Homebrew/test/test_ENV.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'Library/Homebrew/test')

diff --git a/Library/Homebrew/test/test_ENV.rb b/Library/Homebrew/test/test_ENV.rb
index 94a182ac2..a40448f77 100644
--- a/Library/Homebrew/test/test_ENV.rb
+++ b/Library/Homebrew/test/test_ENV.rb
@@ -114,6 +114,14 @@ module SharedEnvTests
       assert_equal compiler, @env.compiler
     end
   end
+
+  def test_deparallelize_block_form_restores_makeflags
+    @env['MAKEFLAGS'] = '-j4'
+    @env.deparallelize do
+      assert_nil @env['MAKEFLAGS']
+    end
+    assert_equal '-j4', @env['MAKEFLAGS']
+  end
 end
 
 class StdenvTests < Homebrew::TestCase
-- 
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