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from __future__ import annotations
import os
import pathlib
import shutil
import tempfile
from typing import AnyStr
from unittest.mock import patch
import pytest
from anyio import (
NamedTemporaryFile,
SpooledTemporaryFile,
TemporaryDirectory,
TemporaryFile,
gettempdir,
gettempdirb,
mkdtemp,
mkstemp,
)
class TestTemporaryFile:
async def test_temporary_file(self) -> None:
data = b"temporary file data"
async with TemporaryFile[bytes]() as af:
await af.write(data)
await af.seek(0)
result = await af.read()
assert result == data
assert af.closed
class TestNamedTemporaryFile:
async def test_named_temporary_file(self) -> None:
data = b"named temporary file data"
async with NamedTemporaryFile[bytes]() as af:
filename = af.name
assert os.path.exists(filename) # type: ignore[arg-type]
await af.write(data)
await af.seek(0)
assert await af.read() == data
assert not os.path.exists(filename) # type: ignore[arg-type]
async def test_exception_handling(self) -> None:
async with NamedTemporaryFile[bytes]() as af:
filename = af.name
assert os.path.exists(filename) # type: ignore[arg-type]
assert not os.path.exists(filename) # type: ignore[arg-type]
with pytest.raises(ValueError):
await af.write(b"should fail")
class TestSpooledTemporaryFile:
async def test_writewithout_rolled(self) -> None:
rollover_called = False
async def fake_rollover() -> None:
nonlocal rollover_called
rollover_called = True
await original_rollover()
async with SpooledTemporaryFile(max_size=10) as stf:
original_rollover = stf.rollover
with patch.object(stf, "rollover", fake_rollover):
assert await stf.write(b"12345") == 5
assert not rollover_called
await stf.write(b"67890X")
assert rollover_called
async def test_writelines(self) -> None:
rollover_called = False
async def fake_rollover() -> None:
nonlocal rollover_called
rollover_called = True
await original_rollover()
async with SpooledTemporaryFile(max_size=20) as stf:
original_rollover = stf.rollover
with patch.object(stf, "rollover", fake_rollover):
await stf.writelines([b"hello", b"world"])
assert not rollover_called
await stf.seek(0)
assert await stf.read() == b"helloworld"
await stf.writelines([b"1234567890123456"])
assert rollover_called
async def test_closed_state(self) -> None:
async with SpooledTemporaryFile(max_size=10) as stf:
assert not stf.closed
assert stf.closed
async def test_exact_boundary_no_rollover(self) -> None:
async with SpooledTemporaryFile(max_size=10) as stf:
await stf.write(b"0123456789")
assert not stf._rolled
await stf.write(b"x")
assert stf._rolled
class TestTemporaryDirectory:
async def test_context_manager(self) -> None:
async with TemporaryDirectory() as td:
td_path = pathlib.Path(td)
assert td_path.exists() and td_path.is_dir()
file_path = td_path / "test.txt"
file_path.write_text("temp dir test", encoding="utf-8")
assert file_path.exists()
assert not td_path.exists()
async def test_cleanup_method(self) -> None:
td = TemporaryDirectory()
td_str = await td.__aenter__()
td_path = pathlib.Path(td_str)
file_path = td_path / "file.txt"
file_path.write_text("cleanup test", encoding="utf-8")
await td.cleanup()
assert not td_path.exists()
async def test_exception_handling(self) -> None:
async with TemporaryDirectory() as td:
td_path = pathlib.Path(td)
assert td_path.exists() and td_path.is_dir()
assert not td_path.exists()
with pytest.raises(FileNotFoundError):
(td_path / "nonexistent.txt").write_text("should fail", encoding="utf-8")
@pytest.mark.parametrize(
"suffix, prefix, text, content",
[
(".txt", "mkstemp_", True, "mkstemp"),
(b".txt", b"mkstemp_", False, b"mkstemp"),
],
)
async def test_mkstemp(
suffix: AnyStr,
prefix: AnyStr,
text: bool,
content: AnyStr,
) -> None:
fd, path = await mkstemp(suffix=suffix, prefix=prefix, text=text)
assert isinstance(fd, int)
if text:
assert isinstance(path, str)
else:
assert isinstance(path, bytes)
if text:
with os.fdopen(fd, "w", encoding="utf-8") as f:
f.write(content)
with open(path, encoding="utf-8") as f:
read_content = f.read()
else:
with os.fdopen(fd, "wb") as f:
f.write(content)
with open(os.fsdecode(path), "rb") as f:
read_content = f.read()
assert read_content == content
os.remove(path)
@pytest.mark.parametrize("prefix", [b"mkdtemp_", "mkdtemp_"])
async def test_mkdtemp(prefix: AnyStr) -> None:
d = await mkdtemp(prefix=prefix)
if isinstance(d, bytes):
dp = pathlib.Path(os.fsdecode(d))
else:
dp = pathlib.Path(d)
assert dp.is_dir()
shutil.rmtree(dp)
async def test_gettemp_functions() -> None:
tdir = await gettempdir()
tdirb = await gettempdirb()
assert tdir == tempfile.gettempdir()
assert tdirb == tempfile.gettempdirb()
|
