Files
cpython/Lib/test/test_tkinter
Serhiy Storchaka a9d4473232 [3.15] gh-143990: Preserve the size when creating a Font from a named font (GH-153267) (GH-153323)
tkinter.font.Font now copies the options of a named font (via "font
configure") instead of the options resolved by "font actual", which
would resolve a size specified in pixels (a negative size) to points.
A font description is still resolved, as it cannot be parsed otherwise.

Font.copy(), which has always been equivalent to constructing a Font
from the original font, is updated to match and now preserves the size
too.


(cherry picked from commit 45010f441d)

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-08 12:58:19 +00:00
..

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).