search a test-version Final Cut Pro

I am looking for a test-version Final Cut Pro for MAC OS X.
I hope it will exist.
I just want to open a new date Final Cut Pro who is made in
an higher version than mine (Final Cut Pro 3).
And plus I like to test if it would be nessecary to have the
new version. It is not very cheap so i prefer to try it bevore
buying.
Thank a lot for helping me quickly