rspec_mocha_expectation_error.rb

describe "#expects" do
  before { something.expects(:some_method) }

  around do |example|
    begin
      example.run
    rescue Mocha::ExpectationError => e
      e.message.should include("expected exactly once, not yet invoked: SomeObject.some_method")
    end
  end

  it "should fail, raise an expectation_error and still pass (weird)" do
  end
end

rspec_mocha_expectation_error_refactored.rb

describe "#expects" do
  before { something.expects(:some_method) }

  it "should fail" do
    expect { verify_mocks_for_rspec }.to raise_error(
      Mocha::ExpectationError,
      /expected exactly once, not yet invoked: SomeObject.some_method/
    )
    
    teardown_mocks_for_rspec
  end
end

there's simply no code to wrap into a Proc or expect and use the raise_error matcher.
also if there would be some code, the Mocha::ExpectationError would not catched. seems like it's thrown later?!

Hmmm...I see what you're doing. The problem is two fold:

• You're using around in a way that it's not meant to be used. Around is intended for cases where you want to wrap examples in a transactional block. I think you're mis-using around a bit if you're setting expectations in it.
• Mocha raises it's exceptions at the end after the example has run, when RSpec calls a method provided by mocha to verify method expectations. I'm not sure when RSpec calls this in relation to the around hook: it may not call it until after the around hook is done (but then again it may).

I think what you need to do is manually call the mocha method that verifies method expectations. This is similar to how rspec-mocks' own specs work. Here is a good example.

You can do something similar by calling mocha's verification method in the expect { ... } block. You can look at RSpec's mocha adapter to see the equivalent method to call on Mocha. It looks like it's Mocha::API#mocha_verify.

Let me know if that doesn't work for you.

hey myron, thanks for your comment. i refactored the example to use rspec's mock methods and it seems to work fine. thanks again :)