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from typing import Union
import pytest
from textual import on
from textual.app import App, ComposeResult
from textual.validation import Failure, ValidationResult
from textual.widgets import MaskedInput
InputEvent = Union[MaskedInput.Changed, MaskedInput.Submitted]
class InputApp(App[None]):
def __init__(self, template: str, placeholder: str = ""):
super().__init__()
self.messages: list[InputEvent] = []
self.template = template
self.placeholder = placeholder
def compose(self) -> ComposeResult:
yield MaskedInput(
template=self.template, placeholder=self.placeholder, select_on_focus=False
)
@on(MaskedInput.Changed)
@on(MaskedInput.Submitted)
def on_changed_or_submitted(self, event: InputEvent) -> None:
self.messages.append(event)
async def test_missing_required():
app = InputApp(">9999-99-99")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
input.value = "2024-12"
assert not input.is_valid
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[0].validation_result == ValidationResult.failure(
failures=[
Failure(
value="2024-12",
validator=input._template,
description="Value does not match template!",
)
],
)
async def test_valid_required():
app = InputApp(">9999-99-99")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
input.value = "2024-12-31"
assert input.is_valid
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[0].validation_result == ValidationResult.success()
async def test_missing_optional():
app = InputApp(">9999-99-00")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
input.value = "2024-12"
assert input.is_valid
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[0].validation_result == ValidationResult.success()
async def test_editing():
serial = "ABCDE-FGHIJ-KLMNO-PQRST"
app = InputApp(">NNNNN-NNNNN-NNNNN-NNNNN;_")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
await pilot.press("A", "B", "C", "D")
assert input.cursor_position == 4
assert input.value == "ABCD"
await pilot.press("E")
assert input.cursor_position == 6
assert input.value == "ABCDE-"
await pilot.press("backspace")
assert input.cursor_position == 4
assert input.value == "ABCD"
input.value = serial
input.action_end()
assert input.is_valid
app.set_focus(None)
input.focus()
await pilot.pause()
assert input.cursor_position == len(serial)
await pilot.press("U")
assert input.cursor_position == len(serial)
async def test_key_movement_actions():
serial = "ABCDE-FGHIJ-KLMNO-PQRST"
app = InputApp(">NNNNN-NNNNN-NNNNN-NNNNN;_")
async with app.run_test():
input = app.query_one(MaskedInput)
input.value = serial
input.action_home()
assert input.is_valid
input.action_cursor_right_word()
assert input.cursor_position == 6
input.action_cursor_right()
input.action_cursor_right_word()
assert input.cursor_position == 12
input.action_cursor_left()
input.action_cursor_left()
assert input.cursor_position == 9
input.action_cursor_left_word()
assert input.cursor_position == 6
async def test_key_modification_actions():
serial = "ABCDE-FGHIJ-KLMNO-PQRST"
app = InputApp(">NNNNN-NNNNN-NNNNN-NNNNN;_")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
input.value = serial
assert input.is_valid
input.cursor_position = 0
input.action_delete_right()
assert input.value == " BCDE-FGHIJ-KLMNO-PQRST"
input.cursor_position = 3
input.action_delete_left()
assert input.value == " B DE-FGHIJ-KLMNO-PQRST"
input.cursor_position = 6
input.action_delete_left()
assert input.value == " B D -FGHIJ-KLMNO-PQRST"
input.cursor_position = 9
input.action_delete_left_word()
assert input.value == " B D - IJ-KLMNO-PQRST"
input.action_delete_left_word()
assert input.value == " - IJ-KLMNO-PQRST"
input.cursor_position = 15
input.action_delete_right_word()
assert input.value == " - IJ-KLM -PQRST"
input.action_delete_right_word()
assert input.value == " - IJ-KLM"
input.cursor_position = 10
input.action_delete_right_all()
assert input.value == " - I"
await pilot.press("J")
assert input.value == " - IJ-"
input.action_cursor_left()
input.action_delete_left_all()
assert input.value == " - J-"
input.clear()
assert input.value == ""
async def test_cursor_word_right_after_last_separator():
app = InputApp(">NNN-NNN-NNN-NNNNN;_")
async with app.run_test():
input = app.query_one(MaskedInput)
input.value = "123-456-789-012"
input.cursor_position = 13
input.action_cursor_right_word()
assert input.cursor_position == 15
async def test_case_conversion_meta_characters():
app = InputApp("NN<-N!N>N")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
await pilot.press("a", "B", "C", "D", "e")
assert input.value == "aB-cDE"
assert input.is_valid
async def test_case_conversion_override():
app = InputApp(">-<NN")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
await pilot.press("a", "B")
assert input.value == "-ab"
assert input.is_valid
async def test_case_conversion_cancel():
app = InputApp("-!N-")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
await pilot.press("a")
assert input.value == "-a-"
assert input.is_valid
async def test_only_separators__raises_ValueError():
app = InputApp("---")
with pytest.raises(ValueError):
async with app.run_test() as pilot:
await pilot.press("a")
async def test_custom_separator_escaping():
app = InputApp("N\\aN\\N\\cN")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
await pilot.press("D", "e", "F")
assert input.value == "DaeNcF"
assert input.is_valid
async def test_digits_not_required():
app = InputApp("00;_")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
await pilot.press("a", "1")
assert input.value == "1"
assert input.is_valid
async def test_digits_required():
app = InputApp("99;_")
async with app.run_test() as pilot:
input = app.query_one(MaskedInput)
await pilot.press("a", "1")
assert input.value == "1"
assert not input.is_valid
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