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tree.commit(rev_id=b'rev2', message='rev2')
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# Check it out and switch to revision 1
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checkout = tree.branch.create_checkout('checkout',
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switch.switch(checkout.controldir, tree.branch, revision_id=b"rev1")
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self.assertPathExists('checkout/file-1')
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self.assertPathDoesNotExist('checkout/file-2')