101 lines
2.8 KiB
Python
101 lines
2.8 KiB
Python
from pathlib import Path
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from subprocess import check_call
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import gzip
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import lzma
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import io
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import zipfile
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from my.kython.kompress import kopen, kexists, CPath
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def test_kopen(tmp_path: Path) -> None:
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"Plaintext handled transparently"
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assert kopen(tmp_path / 'file' ).read() == 'just plaintext'
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assert kopen(tmp_path / 'file.xz').read() == 'compressed text'
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"For zips behaviour is a bit different (not sure about all this, tbh...)"
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assert kopen(tmp_path / 'file.zip', 'path/in/archive').read() == 'data in zip'
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def test_kexists(tmp_path: Path) -> None:
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assert kexists(str(tmp_path / 'file.zip'), 'path/in/archive')
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assert not kexists(str(tmp_path / 'file.zip'), 'path/notin/archive')
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# TODO not sure about this?
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assert not kexists(tmp_path / 'nosuchzip.zip', 'path/in/archive')
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def test_cpath(tmp_path: Path) -> None:
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CPath(str(tmp_path / 'file' )).read_text() == 'just plaintext'
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CPath( tmp_path / 'file.xz').read_text() == 'compressed text'
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# TODO not sure about zip files??
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import pytest # type: ignore
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@pytest.fixture(autouse=True)
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def prepare(tmp_path: Path):
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(tmp_path / 'file').write_text('just plaintext')
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with (tmp_path / 'file.xz').open('wb') as f:
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with lzma.open(f, 'w') as lzf:
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lzf.write(b'compressed text')
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with zipfile.ZipFile(tmp_path / 'file.zip', 'w') as zf:
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zf.writestr('path/in/archive', 'data in zip')
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try:
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yield None
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finally:
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pass
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# meh. otherwise was struggling to run directly against my.core.error...
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from my.core.error import *
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from typing import Iterable, List
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import warnings
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from my.core import warn_if_empty
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def test_warn_if_empty() -> None:
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@warn_if_empty
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def nonempty() -> Iterable[str]:
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yield 'a'
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yield 'aba'
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@warn_if_empty
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def empty() -> List[int]:
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return []
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# should be rejected by mypy!
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# todo how to actually test it?
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# @warn_if_empty
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# def baad() -> float:
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# return 0.00
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# reveal_type(nonempty)
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# reveal_type(empty)
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with warnings.catch_warnings(record=True) as w:
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assert list(nonempty()) == ['a', 'aba']
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assert len(w) == 0
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eee = empty()
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assert eee == []
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assert len(w) == 1
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def test_warn_iterable() -> None:
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from my.core.common import _warn_iterable
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i1: List[str] = ['a', 'b']
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i2: Iterable[int] = iter([1, 2, 3])
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# reveal_type(i1)
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# reveal_type(i2)
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x1 = _warn_iterable(i1)
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x2 = _warn_iterable(i2)
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# vvvv this should be flagged by mypy
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# _warn_iterable(123)
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# reveal_type(x1)
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# reveal_type(x2)
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with warnings.catch_warnings(record=True) as w:
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assert x1 is i1 # should be unchanged!
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assert len(w) == 0
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assert list(x2) == [1, 2, 3]
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assert len(w) == 0
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