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import pytest
from textual import on
from textual.app import App, ComposeResult
from textual.validation import Number, ValidationResult
from textual.widgets import Input
class InputApp(App):
def __init__(self, validate_on=None):
super().__init__()
self.messages = []
self.validator = Number(minimum=1, maximum=5)
self.validate_on = validate_on
def compose(self) -> ComposeResult:
yield Input(
validators=self.validator,
validate_on=self.validate_on,
)
@on(Input.Changed)
@on(Input.Submitted)
def on_changed_or_submitted(self, event):
self.messages.append(event)
async def test_input_changed_message_validation_failure():
app = InputApp()
async with app.run_test() as pilot:
input = app.query_one(Input)
input.value = "8"
assert not input.is_valid
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[0].validation_result == ValidationResult.failure(
failures=[
Number.NotInRange(
value="8",
validator=app.validator,
description="Must be between 1 and 5.",
)
],
)
async def test_input_changed_message_validation_success():
app = InputApp()
async with app.run_test() as pilot:
input = app.query_one(Input)
input.value = "3"
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[0].validation_result == ValidationResult.success()
async def test_input_submitted_message_validation_failure():
app = InputApp()
async with app.run_test() as pilot:
input = app.query_one(Input)
input.value = "8"
await input.action_submit()
await pilot.pause()
assert len(app.messages) == 2
assert app.messages[1].validation_result == ValidationResult.failure(
failures=[
Number.NotInRange(
value="8",
validator=app.validator,
description="Must be between 1 and 5.",
)
],
)
async def test_input_submitted_message_validation_success():
app = InputApp()
async with app.run_test() as pilot:
input = app.query_one(Input)
input.value = "3"
await input.action_submit()
await pilot.pause()
assert len(app.messages) == 2
assert app.messages[1].validation_result == ValidationResult.success()
async def test_on_blur_triggers_validation():
app = InputApp()
async with app.run_test() as pilot:
input = app.query_one(Input)
input.focus()
input.value = "3"
input.remove_class("-valid")
app.set_focus(None)
await pilot.pause()
assert input.has_class("-valid")
@pytest.mark.parametrize(
"validate_on",
[
set(),
[],
{"blur"},
["submitted"],
["blur", "submitted"],
["fried", "garbage"],
],
)
async def test_validation_on_changed_should_not_happen(validate_on):
app = InputApp(validate_on)
async with app.run_test() as pilot:
# sanity checks
assert len(app.messages) == 0
input = app.query_one(Input)
assert not input.has_class("-valid")
assert not input.has_class("-invalid")
input.value = "3"
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[-1].validation_result is None
assert not input.has_class("-valid")
assert not input.has_class("-invalid")
@pytest.mark.parametrize(
"validate_on",
[
set(),
{"blur"},
{"changed"},
{"blur", "changed"},
{"fried", "garbage"},
],
)
async def test_validation_on_submitted_should_not_happen(validate_on):
app = InputApp(validate_on)
async with app.run_test() as pilot:
# sanity checks
assert len(app.messages) == 0
input = app.query_one(Input)
assert not input.has_class("-valid")
assert not input.has_class("-invalid")
await input.action_submit()
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[-1].validation_result is None
assert not input.has_class("-valid")
assert not input.has_class("-invalid")
@pytest.mark.parametrize(
"validate_on",
[
set(),
{"submitted"},
{"changed"},
{"submitted", "changed"},
{"fried", "garbage"},
],
)
async def test_validation_on_blur_should_not_happen_unless_specified(validate_on):
app = InputApp(validate_on)
async with app.run_test() as pilot:
# sanity checks
input = app.query_one(Input)
assert not input.has_class("-valid")
assert not input.has_class("-invalid")
input.focus()
await pilot.pause()
app.set_focus(None)
await pilot.pause()
assert not input.has_class("-valid")
assert not input.has_class("-invalid")
async def test_none_validate_on_means_all_validations_happen():
app = InputApp(None)
async with app.run_test() as pilot:
assert len(app.messages) == 0 # sanity checks
input = app.query_one(Input)
assert not input.has_class("-valid")
assert not input.has_class("-invalid")
input.value = "3"
await pilot.pause()
assert len(app.messages) == 1
assert app.messages[-1].validation_result is not None
assert input.has_class("-valid")
input.remove_class("-valid")
await input.action_submit()
await pilot.pause()
assert len(app.messages) == 2
assert app.messages[-1].validation_result is not None
assert input.has_class("-valid")
input.remove_class("-valid")
input.focus()
await pilot.pause()
app.set_focus(None)
await pilot.pause()
assert input.has_class("-valid")
async def test_valid_empty():
app = InputApp(None)
async with app.run_test() as pilot:
input = app.query_one(Input)
await pilot.press("1", "backspace")
assert not input.has_class("-valid")
assert input.has_class("-invalid")
input.valid_empty = True
assert input.has_class("-valid")
assert not input.has_class("-invalid")
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