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							- Writing new tests
 
- =================
 
- Precaution
 
- ----------
 
-     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).
 
 
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