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Merge pull request #2513 from Textualize/support-no-stdout
Supporting no stdout, fix force color bug
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Original file line number | Diff line number | Diff line change |
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from types import TracebackType | ||
from typing import IO, Iterable, Iterator, List, Optional, Type | ||
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class NullFile(IO[str]): | ||
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# TODO: "mode", "name" and "closed" are only required for Python 3.6. | ||
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@property | ||
def mode(self) -> str: | ||
return "" | ||
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@property | ||
def name(self) -> str: | ||
return "NullFile" | ||
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def closed(self) -> bool: | ||
return False | ||
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def close(self) -> None: | ||
pass | ||
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def isatty(self) -> bool: | ||
return False | ||
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def read(self, __n: int = 1) -> str: | ||
return "" | ||
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def readable(self) -> bool: | ||
return False | ||
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def readline(self, __limit: int = 1) -> str: | ||
return "" | ||
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def readlines(self, __hint: int = 1) -> List[str]: | ||
return [] | ||
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def seek(self, __offset: int, __whence: int = 1) -> int: | ||
return 0 | ||
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def seekable(self) -> bool: | ||
return False | ||
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def tell(self) -> int: | ||
return 0 | ||
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def truncate(self, __size: Optional[int] = 1) -> int: | ||
return 0 | ||
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def writable(self) -> bool: | ||
return False | ||
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def writelines(self, __lines: Iterable[str]) -> None: | ||
pass | ||
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def __next__(self) -> str: | ||
return "" | ||
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def __iter__(self) -> Iterator[str]: | ||
return iter([""]) | ||
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def __enter__(self) -> IO[str]: | ||
pass | ||
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def __exit__( | ||
self, | ||
__t: Optional[Type[BaseException]], | ||
__value: Optional[BaseException], | ||
__traceback: Optional[TracebackType], | ||
) -> None: | ||
pass | ||
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def write(self, text: str) -> int: | ||
return 0 | ||
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def flush(self) -> None: | ||
pass | ||
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def fileno(self) -> int: | ||
return -1 | ||
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NULL_FILE = NullFile() |
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Original file line number | Diff line number | Diff line change |
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from rich._null_file import NullFile | ||
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def test_null_file(): | ||
file = NullFile() | ||
with file: | ||
assert file.write("abc") == 0 | ||
assert file.mode == "" | ||
assert file.name == "NullFile" | ||
assert not file.closed() | ||
assert file.close() is None | ||
assert not file.isatty() | ||
assert file.read() == "" | ||
assert not file.readable() | ||
assert file.readline() == "" | ||
assert file.readlines() == [] | ||
assert file.seek(0, 0) == 0 | ||
assert not file.seekable() | ||
assert file.tell() == 0 | ||
assert file.truncate() == 0 | ||
assert file.writable() == False | ||
assert file.writelines([""]) is None | ||
assert next(file) == "" | ||
assert next(iter(file)) == "" | ||
assert file.fileno() == -1 | ||
assert file.flush() is None |
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