mirror of
https://github.com/Textualize/textual.git
synced 2025-10-17 02:38:12 +03:00
60e0d8d4c1
* Managing exceptions when watched CSS files are unavailable * Handling scenario where FileMonitor crashes when file temporarily becomes unavailable. * Update CHANGELOG * Update log level to warning
59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
import os
|
|
from pathlib import Path
|
|
|
|
from textual.file_monitor import FileMonitor
|
|
|
|
|
|
def test_repr() -> None:
|
|
file_monitor = FileMonitor([Path(".")], lambda: None)
|
|
assert "FileMonitor" in repr(file_monitor)
|
|
|
|
|
|
def test_file_never_found():
|
|
path = "doesnt_exist.tcss"
|
|
file_monitor = FileMonitor([Path(path)], lambda: None)
|
|
file_monitor.check() # Ensuring no exceptions are raised.
|
|
|
|
|
|
async def test_file_deletion(tmp_path):
|
|
"""In some environments, a file can become temporarily unavailable during saving.
|
|
|
|
This test ensures the FileMonitor is robust enough to handle a file temporarily being
|
|
unavailable, and that it recovers when the file becomes available again.
|
|
|
|
Regression test for: https://github.com/Textualize/textual/issues/3996
|
|
"""
|
|
|
|
def make_file():
|
|
path = tmp_path / "will_be_deleted.tcss"
|
|
path.write_text("#foo { color: dodgerblue; }")
|
|
return path
|
|
|
|
callback_counter = 0
|
|
|
|
def callback():
|
|
nonlocal callback_counter
|
|
callback_counter += 1
|
|
|
|
path = make_file()
|
|
file_monitor = FileMonitor([path], callback)
|
|
|
|
# Ensure the file monitor survives after the file is gone
|
|
await file_monitor()
|
|
os.remove(path)
|
|
|
|
# The file is now unavailable, but we don't crash here
|
|
await file_monitor()
|
|
await file_monitor()
|
|
|
|
# Despite multiple checks, the file was only available for the first check,
|
|
# and we only fire the callback while the file is available.
|
|
assert callback_counter == 1
|
|
|
|
# The file is made available again.
|
|
make_file()
|
|
|
|
# Since the file is available, the callback should fire when the FileMonitor is called
|
|
await file_monitor()
|
|
assert callback_counter == 2
|