Allow "devel-only" formulae

It seems only natural that this should be possible, or at the very
least, it should not result in calling methods on nil.

1 files changed, 11 insertions, 0 deletions

diff --git a/Library/Homebrew/test/test_formula_validation.rb b/Library/Homebrew/test/test_formula_validation.rb
index be4c38c64..5c6bf2888 100644
--- a/Library/Homebrew/test/test_formula_validation.rb
+++ b/Library/Homebrew/test/test_formula_validation.rb
@@ -59,6 +59,17 @@ class FormulaValidationTests < Test::Unit::TestCase
     end
   end
 
+  def test_devel_only_valid
+    assert_nothing_raised do
+      formula do
+        devel do
+          url "foo"
+          version "1.0"
+        end
+      end
+    end
+  end
+
   def test_head_only_valid
     assert_nothing_raised do
       formula do