Create flexible mock objects for use when unit testing Flash and Flex projects. Supports method and property mocking with argument constraints, return values, event dispatch, error throwing, and more.

mock-as3 provides an expectation based API, allowing the setting of method and property expectations separate to the invocation of mocked methods.

Just a taster of what mock-as3 looks like.

// create an instance of a Mock delegate.
var example:MockExample = new MockExample();
// get the reference to the Mock instance.
var mock:Mock = example.mock;
// set an expectation
mock.method('hello').withArgs(String).andReturn('hi!').once;
// call the method
mock.hello('with a string');
// check that all the expectations were met
mock.verify();

See the SettingExpectations page for more examples.