Add test for dependency options

Library/Homebrew/test/test_formula.rb

@@ -209,4 +209,15 @@ class FormulaTests < Test::Unit::TestCase
   ensure
     path.unlink
   end
+
+  def test_dependency_option_integration
+    f = formula do
+      url 'foo-1.0'
+      depends_on 'foo' => :optional
+      depends_on 'bar' => :recommended
+    end
+
+    assert f.build.has_option?('with-foo')
+    assert f.build.has_option?('without-bar')
+  end
 end