How can I unit test my Swing application?

Hi All,
In my application I came across a situation where I have to automate the unit testing of my application.
Using my application user can able to draw polylines and rectangles on a BufferedImage added to a JFrame.
Can any one please help/suggest me, how to automate the drawing process (this process consists of drawing the polylines with mouse and few action/mouse events)?
your help will be highly helpful to me.
Satya

What exactly will that unit test prove? That you can mock the drawing of lines?
Unit test are supposed to test certain parts of your application code - I'd concentrate on unit tests that are actually useful and for example in the future can help to catch regressions.
If anywhere you can get help creating unit tests of this magnitude, I'd look in the unit testing support for Swing applications. Google for "java swing unit test" to see what you can come up with. Probably you'll need to create some plumbing yourself to make custom painting unit-testable; perhaps you could do something with painting to a BufferedImage in stead of to a Swing component for example.

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