Sorry for the bad formatting. Let me try that again. Note, you have to have the MiniUnit gem installed for this and the rails test cases in the link above to fail.

require 'rubygems' 
# gem 'mocha', '>= 0.9.3'
require 'mocha'
require 'test/unit'

class TestFailing < Test::Unit::TestCase
  
  Assertion = MiniTest::Assertion
  
  def test_raise
    assert_raise(Assertion) { flunk }
  end

end


# Loaded suite /Users/kencollins/Desktop/test_failing
# Started
# F 
# Finished in 0.007939 seconds.
# 
#   1) Failure:
# test_raise(TestFailing)
# method test_raise in test_failing.rb at line 11
# method __send__ in test_case_adapter.rb at line 69
# method run in test_case_adapter.rb at line 69
# <MiniTest::Assertion> exception expected but was
# Class: <Test::Unit::AssertionFailedError>
# Message: <"Flunked.">
# ---Backtrace---
# /Users/kencollins/Desktop/test_failing.rb:11:in `test_raise'
# /Users/kencollins/Desktop/test_failing.rb:11:in `test_raise'
# /opt/local/lib/ruby/gems/1.8/gems/mocha-0.9.5/lib/mocha/test_case_adapter.rb:69:in `__send__'
# /opt/local/lib/ruby/gems/1.8/gems/mocha-0.9.5/lib/mocha/test_case_adapter.rb:69:in `run'
# ---------------
# 
# 1 tests, 1 assertions, 1 failures, 0 errors

Hopefully this commit [1] resolves the Mocha aspects of this problem. Let me know if not.

Thanks, James.

[1] http://github.com/floehopper/moc...

Well it does fix it but this commit in Mocha...

http://github.com/floehopper/moc...

... breaks active support since it calls on Mocha::TestCaseAdapter::AssertionCounter. I'll upload a patch for active support to work with the upcoming Mocha code org.

Do you need some particular version of mocha to be able to run the tests now? I'm experiencing something very similar (http://pastie.org/417598) on the latest edge. Using mocha 0.9.5, via "gem1.9 install mocha".

This can be marked invalid. It is moot under the release of 1.9.1 and rails 2.3.2.