Tirsvad
0291b12884
After a wrong answer the reopened dialog had no keyboard focus. The dialog is lifted and focus is forced onto it and its entry each time it opens. Task: MIL-003#8
71 lines
2.0 KiB
Python
71 lines
2.0 KiB
Python
"""Tests of the display-free dialog focus helpers in `turtle_screen`."""
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from collections.abc import Callable, Sequence
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from us_states_game.turtle_screen import DialogWidget, find_widgets, focus_dialog
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class FakeWidget:
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"""A Tk widget stand-in that records the calls made on it."""
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def __init__(self, tk_class: str, children: Sequence["FakeWidget"] = ()) -> None:
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self.tk_class = tk_class
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self.children = list(children)
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self.calls: list[str] = []
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def winfo_class(self) -> str:
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return self.tk_class
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def winfo_children(self) -> Sequence[DialogWidget]:
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return self.children
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def after(
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self, ms: int, func: Callable[[DialogWidget], None], widget: DialogWidget
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) -> str:
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return ""
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def lift(self) -> None:
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self.calls.append("lift")
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def focus_force(self) -> None:
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self.calls.append("focus_force")
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def test_find_widgets_returns_nested_matches_in_order() -> None:
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entry = FakeWidget("Entry")
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frame = FakeWidget("Frame", [entry])
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dialog = FakeWidget("Toplevel", [frame])
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root = FakeWidget("Tk", [FakeWidget("Canvas"), dialog])
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assert find_widgets(root, ("Entry", "TEntry")) == [entry]
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assert find_widgets(root, "Toplevel") == [dialog]
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def test_focus_dialog_lifts_dialog_and_focuses_entry() -> None:
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entry = FakeWidget("Entry")
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dialog = FakeWidget("Toplevel", [FakeWidget("Frame", [entry])])
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root = FakeWidget("Tk", [dialog])
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focus_dialog(root)
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assert dialog.calls == ["lift", "focus_force"]
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assert entry.calls == ["focus_force"]
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def test_focus_dialog_uses_newest_dialog() -> None:
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old = FakeWidget("Toplevel")
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new = FakeWidget("Toplevel")
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focus_dialog(FakeWidget("Tk", [old, new]))
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assert old.calls == []
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assert new.calls == ["lift", "focus_force"]
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def test_focus_dialog_does_nothing_without_dialog() -> None:
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canvas = FakeWidget("Canvas")
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focus_dialog(FakeWidget("Tk", [canvas]))
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assert canvas.calls == []
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