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gh-151678: Add tests for tkinter.Canvas#151683

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gh-151678: Add tests for tkinter.Canvas#151683
serhiy-storchaka wants to merge 2 commits into
python:mainfrom
serhiy-storchaka:test-tkinter-canvas-methods

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@serhiy-storchaka serhiy-storchaka commented Jun 18, 2026

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Cover previously-untested Canvas methods in CanvasTest:

  • item creation and types, bbox, coordinate conversion, move/scale, find and addtag queries, tags, item configuration, stacking order, text-item editing, selection, focus, scan and postscript;
  • the create_arc, create_oval, create_bitmap, create_image, create_text and create_window item creation methods, checking coordinates, default and explicit options, valid enumerations and rejection of invalid values;
  • tag_bind() and tag_unbind(), checking the returned function id and binding script, querying bound sequences, the add parameter, event delivery to items via a tag, and removal of a single binding by id or all bindings for a sequence.

Cover previously-untested Canvas methods in CanvasTest:

* item creation and types, bbox, coordinate conversion, move/scale,
  find and addtag queries, tags, item configuration, stacking order,
  text-item editing, selection, focus, scan and postscript;
* the create_arc, create_oval, create_bitmap, create_image,
  create_text and create_window item creation methods, checking
  coordinates, default and explicit options, valid enumerations and
  rejection of invalid values;
* tag_bind() and tag_unbind(), checking the returned function id and
  binding script, querying bound sequences, the add parameter, event
  delivery to items via a tag, and removal of a single binding by id
  or all bindings for a sequence.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@serhiy-storchaka serhiy-storchaka added tests Tests in the Lib/test dir skip news needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes needs backport to 3.15 pre-release feature fixes, bugs and security fixes labels Jun 18, 2026
create_bitmap() does not report an unknown bitmap name on macOS/Aqua,
where bitmaps are resolved lazily.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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awaiting core review needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes needs backport to 3.15 pre-release feature fixes, bugs and security fixes skip news tests Tests in the Lib/test dir

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