1 files changed, 16 insertions, 0 deletions
diff --git a/Library/Homebrew/test/test_build_options.rb b/Library/Homebrew/test/test_build_options.rb
index 38eeae22b..b5674ea50 100644
--- a/Library/Homebrew/test/test_build_options.rb
+++ b/Library/Homebrew/test/test_build_options.rb
@@ -71,4 +71,20 @@ class BuildOptionsTests < Test::Unit::TestCase
   def test_actually_recognizes_implicit_options
     assert @build.has_opposite_of?("--with-baz")
   end
+
+  def test_copies_do_not_share_underlying_options
+    orig = BuildOptions.new []
+    copy = orig.dup
+    copy.add 'foo'
+    assert_empty orig
+    assert_equal 1, copy.count
+  end
+
+  def test_copies_do_not_share_underlying_args
+    orig = BuildOptions.new []
+    copy = orig.dup
+    copy.args << Option.new('foo')
+    assert_empty orig.args
+    assert_equal 1, copy.args.count
+  end
 end