node.js testing frameworks

There are so many testing frameworks for node.js, start to evaluate some most mentioned/used ones. Criteria that I am looking for:

1. easy to understand concept and constructs
2. nice support for async calls and flow control
3. easy integration with CI tools such as Hudson
4. code coverage report
5. mocks and stubs

• Vows+APIeasy
• Expresso+node-jscoverage: really like its code coverage feature
• YUITest: somehow had issues writing async operations in setUp and tearDown, also had issues using flow control libraries such as async inside each test
• Jasimine: very clean and easy to understand concept and constructs
• Nodeunit: a detailed tutorial from the author
• node-qunit+jscoverage, qunit is used for JQuery testing and has fairly good async support, here is a fairly detailed article for async testing with qunit
• testosterone+gently
• Sinon.JS

Among those, I like Jasimine most, it is easy to understand and has rich feature set. The only feature missing is lack of code coverage report. jasimine-reporters supports output of JUnit format unit test results. jasimine-node brings Jasimine to node.js. You can check out "Testing Backbone applications with Jasimine and Sinon" for a practical example.