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youknowdot
519370bece
Preserve existing coverage while following verified final behavior for script metadata, builtin signatures and loading, AST fixture construction, memoryview diagnostics, mmap search bounds, and struct format errors. The unchanged final comparator exposes the earlier expectations; focused native baseline failures establish the required implementation changes. Assisted-by: OpenAI Codex:model identifier unavailable
76 lines
3.2 KiB
Python
76 lines
3.2 KiB
Python
import inspect
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import os
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# __text_signature__ is generated from the Rust parameter list, so it must not
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# describe parameters the function does not actually take, and must mark the
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# ones it does take as positional-only.
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# No phantom `module` parameter. The signature marks it as `$module` and
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# `__self__` is the module, so inspect strips it.
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for f in (len, abs, hash, id, repr, bin, ord, divmod, hex, oct, chr, callable):
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assert "module" not in inspect.signature(f).parameters, f.__name__
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# Plain arguments bind through take_positional(), so they are positional-only.
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try:
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len(obj=[1, 2])
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except TypeError:
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pass
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else:
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raise AssertionError("len() should not accept keyword arguments")
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assert str(inspect.signature(len)) == "(obj, /)"
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assert str(inspect.signature(abs)) == "(number, /)"
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assert str(inspect.signature(hash)) == "(obj, /)"
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assert str(inspect.signature(chr)) == "(i, /)"
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assert str(inspect.signature(callable)) == "(obj, /)"
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assert (
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inspect.signature(len).parameters["obj"].kind == inspect.Parameter.POSITIONAL_ONLY
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)
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# *args/**kwargs cannot be followed by `/`. The parameter names themselves still
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# differ from CPython here, which is out of scope.
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breakpoint_kinds = [p.kind for p in inspect.signature(breakpoint).parameters.values()]
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assert breakpoint_kinds == [
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inspect.Parameter.VAR_POSITIONAL,
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inspect.Parameter.VAR_KEYWORD,
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], breakpoint_kinds
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# Parameter names follow CPython, so signatures are directly comparable.
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assert str(inspect.signature(bin)) == "(integer, /)"
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assert str(inspect.signature(ord)) == "(character, /)"
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assert str(inspect.signature(divmod)) == "(x, y, /)"
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assert str(inspect.signature(hasattr)) == "(obj, name, /)"
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assert str(inspect.signature(setattr)) == "(obj, name, value, /)"
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assert str(inspect.signature(delattr)) == "(obj, name, /)"
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assert str(inspect.signature(isinstance)) == "(obj, class_or_tuple, /)"
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assert str(inspect.signature(issubclass)) == "(cls, class_or_tuple, /)"
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assert str(inspect.signature(aiter)) == "(async_iterable, /)"
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# A generated signature is stored in __doc__ and read back out of it, so it
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# needs the `--` terminator even when the function has no documentation.
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assert str(inspect.signature(os.getpid)) == "()"
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assert str(inspect.signature(os.getcwd)) == "()"
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# Methods report a signature too, with the receiver marked so that binding a
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# method drops it.
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assert str(inspect.signature(list.__dir__)) == "(self, /)"
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assert str(inspect.signature([].__dir__)) == "()"
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assert str(inspect.signature(float.fromhex)) == "(string, /)"
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# Functions whose arguments come from a FromArgs struct report the struct's
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# parameters.
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assert round.__text_signature__ == "($module, /, number, ndigits=None)"
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assert sum.__text_signature__ == "($module, iterable, /, start=0)"
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assert str(inspect.signature(round)) == "(number, ndigits=None)"
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assert str(inspect.signature(sum)) == "(iterable, /, start=0)"
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# A keyword-only argument between two positional ones used to put `/` after
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# `*`, which inspect cannot parse. Arguments are ordered like CPython's, so
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# path and mode take keywords. Windows renders follow_symlinks differently.
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if hasattr(os, "chmod"):
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chmod_signature = os.chmod.__text_signature__
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assert chmod_signature.startswith("($module, /, path, mode, *, dir_fd=None"), (
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chmod_signature
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)
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