Writing new tests

=================

Precaution

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New tests should always use only one Tk window at once, like all the

current tests do. This means that you have to destroy the current window

before creating another one, and clean up after the test. The motivation

behind this is that some tests may depend on having its window focused

while it is running to work properly, and it may be hard to force focus

on your window across platforms (right now only test_traversal at

test_ttk.test_widgets.NotebookTest depends on this).