FUnit is the first generation xUnit testing tool to leverage the custom metadata capabilities of the Flex mxmlc compiler. The tag-based attribute model of FUnit makes it the most intuitive unit-testing framework ever created for the Flex platform.
An actionscript 2.0 unit testing framework for use with with Macromedia Flex. Based on Nunit and other testing frameworks provides full support for testing Flex applications including asynchronous web service requests.