1 files changed, 8 insertions, 0 deletions
diff --git a/Library/Homebrew/test/testing_env.rb b/Library/Homebrew/test/testing_env.rb
index cbbc5eff1..aa89ba2bd 100644
--- a/Library/Homebrew/test/testing_env.rb
+++ b/Library/Homebrew/test/testing_env.rb
@@ -121,5 +121,13 @@ module Homebrew
         ENV.replace old
       end
     end
+
+    # Use a stubbed {Formulary::FormulaLoader} to make a given formula be found
+    # when loading from {Formulary} with `ref`.
+    def stub_formula_loader(formula, ref = formula.name)
+      loader = mock
+      loader.stubs(:get_formula).returns(formula)
+      Formulary.stubs(:loader_for).with(ref).returns(loader)
+    end
   end
 end