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import logging
import os
import sys
from pathlib import Path
from threading import Thread
from time import sleep, time
from typing import TYPE_CHECKING, Any, List, Set, Tuple
import pytest
@pytest.fixture
def tmp_work_path(tmp_path: Path):
"""
Create a temporary working directory.
"""
previous_cwd = Path.cwd()
os.chdir(tmp_path)
yield tmp_path
os.chdir(previous_cwd)
@pytest.fixture(scope='session')
def test_dir():
d = Path(__file__).parent / 'test_files'
files = {p: p.read_text() for p in d.glob('**/*.*')}
yield d
for f in d.glob('**/*.*'):
f.unlink()
for path, content in files.items():
path.write_text(content)
@pytest.fixture(autouse=True)
def anyio_backend():
return 'asyncio'
def sleep_write(path: Path):
sleep(0.1)
path.write_text('hello')
@pytest.fixture
def write_soon():
threads = []
def start(path: Path):
thread = Thread(target=sleep_write, args=(path,))
thread.start()
threads.append(thread)
yield start
for t in threads:
t.join()
ChangesType = List[Set[Tuple[int, str]]]
class MockRustNotify:
def __init__(self, changes: ChangesType, exit_code: str):
self.iter_changes = iter(changes)
self.exit_code = exit_code
self.watch_count = 0
def watch(self, debounce_ms: int, step_ms: int, timeout_ms: int, cancel_event):
try:
change = next(self.iter_changes)
except StopIteration:
return self.exit_code
else:
self.watch_count += 1
return change
def __enter__(self):
return self
def __exit__(self, *args):
self.close()
def close(self):
pass
if TYPE_CHECKING:
from typing import Literal, Protocol
class MockRustType(Protocol):
def __call__(
self, changes: ChangesType, *, exit_code: Literal['signal', 'stop', 'timeout'] = 'stop'
) -> Any: ...
@pytest.fixture
def mock_rust_notify(mocker):
def mock(changes: ChangesType, *, exit_code: str = 'stop'):
m = MockRustNotify(changes, exit_code)
mocker.patch('watchfiles.main.RustNotify', return_value=m)
return m
return mock
@pytest.fixture(autouse=True)
def ensure_logging_framework_not_altered():
"""
https://github.com/pytest-dev/pytest/issues/5743
"""
wg_logger = logging.getLogger('watchfiles')
before_handlers = list(wg_logger.handlers)
yield
wg_logger.handlers = before_handlers
py_code = """
import sys
from pathlib import Path
def foobar():
Path('sentinel').write_text(' '.join(map(str, sys.argv[1:])))
"""
@pytest.fixture
def create_test_function(tmp_work_path: Path):
original_path = sys.path[:]
(tmp_work_path / 'test_function.py').write_text(py_code)
sys.path.append(str(tmp_work_path))
yield 'test_function.foobar'
sys.path = original_path
@pytest.fixture
def reset_argv():
original_argv = sys.argv[:]
yield
sys.argv = original_argv
class TimeTaken:
def __init__(self, name: str, min_time: int, max_time: int):
self.name = name
self.min_time = min_time
self.max_time = max_time
self.start = time()
def __enter__(self):
return self
def __exit__(self, exc_type, *args):
diff = (time() - self.start) * 1000
if exc_type is None:
if diff > self.max_time:
pytest.fail(f'{self.name} code took too long: {diff:0.2f}ms')
return
elif diff < self.min_time:
pytest.fail(f'{self.name} code did not take long enough: {diff:0.2f}ms')
return
print(f'{self.name} code took {diff:0.2f}ms')
@pytest.fixture
def time_taken(request):
def time_taken(min_time: int, max_time: int):
return TimeTaken(request.node.name, min_time, max_time)
return time_taken
class SetEnv:
def __init__(self):
self.envars = set()
def __call__(self, name, value):
self.envars.add(name)
os.environ[name] = value
def clear(self):
for n in self.envars:
os.environ.pop(n)
@pytest.fixture
def env():
setenv = SetEnv()
yield setenv
setenv.clear()
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