8997615430
Use a special value to flag a blank selection, add methods is_blank and clear, slightly refactor the way the widget is setup to avoid having attributes _initial_options and _options. Implement exceptions to be raised when the widget is entering bad state.
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
import pytest
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from textual.app import App
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from textual.widgets import Select
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from textual.widgets.select import EmptySelectError
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async def test_empty_select_is_ok_with_blanks():
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class SelectApp(App[None]):
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def compose(self):
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yield Select([])
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app = SelectApp()
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async with app.run_test():
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# Sanity check:
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assert app.query_one(Select).is_blank()
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async def test_empty_set_options_is_ok_with_blanks():
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class SelectApp(App[None]):
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def compose(self):
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yield Select([(str(n), n) for n in range(3)], value=0)
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app = SelectApp()
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async with app.run_test():
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select = app.query_one(Select)
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assert not select.is_blank() # Sanity check.
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select.set_options([])
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assert select.is_blank() # Sanity check.
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async def test_empty_select_raises_exception_if_allow_blank_is_false():
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class SelectApp(App[None]):
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def compose(self):
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yield Select([], allow_blank=False)
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app = SelectApp()
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with pytest.raises(EmptySelectError):
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async with app.run_test():
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pass
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async def test_empty_set_options_raises_exception_if_allow_blank_is_false():
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class SelectApp(App[None]):
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def compose(self):
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yield Select([(str(n), n) for n in range(3)], allow_blank=False)
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app = SelectApp()
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async with app.run_test():
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select = app.query_one(Select)
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assert not select.is_blank() # Sanity check.
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with pytest.raises(EmptySelectError):
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select.set_options([])
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