See http://github.com/francois/shoulda/commit/3cd1735de2cad4becf2ba009582677c3025c5ee0

gistfile1.diff

  1) Failure:
test: Pets::Dog should flunk. (Pets::DogTest)
    [./test/unit/dog_test.rb:10
     /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:145:in `load_without_new_constant_marking'
     /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:145:in `load'
     /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
     /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:145:in `load'
     /Library/Ruby/Gems/1.8/gems/rake-0.8.4/lib/rake/rake_test_loader.rb:5
     /Library/Ruby/Gems/1.8/gems/rake-0.8.4/lib/rake/rake_test_loader.rb:5:in `each'
     /Library/Ruby/Gems/1.8/gems/rake-0.8.4/lib/rake/rake_test_loader.rb:5]:
Flunked.



diff --git a/lib/shoulda/context.rb b/lib/shoulda/context.rb
index 948f18c..510d673 100644
--- a/lib/shoulda/context.rb
+++ b/lib/shoulda/context.rb
@@ -58,6 +58,7 @@ module Shoulda
     #  end
 
     def should(name, options = {}, &blk)
+      options[:backtrace] = caller unless options.has_key?(:backtrace)
       if Shoulda.current_context
         block_given? ? Shoulda.current_context.should(name, options, &blk) : Should.current_context.should_eventually(name)
       else
@@ -101,6 +102,7 @@ module Shoulda
 
     # Just like should, but never runs, and instead prints an 'X' in the Test::Unit output.
     def should_eventually(name, options = {}, &blk)
+      options[:backtrace] = caller unless options.has_key?(:backtrace)
       context_name = self.name.gsub(/Test/, "")
       context = Shoulda::Context.new(context_name, self) do
         should_eventually(name, &blk)
@@ -307,7 +309,7 @@ module Shoulda
 
     def should(name, options = {}, &blk)
       if block_given?
-        self.shoulds << { :name => name, :before => options[:before], :block => blk }
+        self.shoulds << { :name => name, :before => options[:before], :backtrace => options[:backtrace], :block => blk }
       else
        self.should_eventuallys << { :name => name }
      end
@@ -349,6 +351,10 @@ module Shoulda
           should[:before].bind(self).call if should[:before]
           context.run_current_setup_blocks(self)
           should[:block].bind(self).call
+        rescue Test::Unit::AssertionFailedError => e
+          p e.instance_variables
+          e.set_backtrace(should[:backtrace]) if should.has_key?(:backtrace)
+          raise
         ensure
           context.run_all_teardown_blocks(self)
         end
diff --git a/test/unit/dog_test.rb b/test/unit/dog_test.rb
index 03ff41f..113ea28 100644
--- a/test/unit/dog_test.rb
+++ b/test/unit/dog_test.rb
@@ -6,4 +6,8 @@ class Pets::DogTest < ActiveSupport::TestCase
   should_have_many :treats
   should_have_and_belong_to_many :fleas
   should_validate_presence_of :owner_id, :treats, :fleas
+
+  should "flunk" do
+    flunk
+  end
 end