53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
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# Simple support library for our run tests.
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from contextlib import contextmanager
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from typing import (
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Any, Iterator, TypeVar, Generator, Optional, List, Tuple, Sequence,
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Union, Callable,
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)
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@contextmanager
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def assertRaises(typ: type, msg: str = '') -> Iterator[None]:
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try:
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yield
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except Exception as e:
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assert isinstance(e, typ), f"{e} is not a {typ.__name__}"
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assert msg in str(e), f'Message "{e}" does not match "{msg}"'
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else:
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assert False, f"Expected {typ.__name__} but got no exception"
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T = TypeVar('T')
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U = TypeVar('U')
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V = TypeVar('V')
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def run_generator(gen: Generator[T, V, U],
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inputs: Optional[List[V]] = None,
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p: bool = False) -> Tuple[Sequence[T], Union[U, str]]:
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res: List[T] = []
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i = -1
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while True:
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try:
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if i >= 0 and inputs:
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# ... fixtures don't have send
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val = gen.send(inputs[i]) # type: ignore
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else:
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val = next(gen)
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except StopIteration as e:
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return (tuple(res), e.value)
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except Exception as e:
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return (tuple(res), str(e))
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if p:
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print(val)
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res.append(val)
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i += 1
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F = TypeVar('F', bound=Callable)
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# Wrap a mypyc-generated function in a real python function, to allow it to be
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# stuck into classes and the like.
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def make_python_function(f: F) -> F:
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def g(*args: Any, **kwargs: Any) -> Any:
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return f(*args, **kwargs)
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return g # type: ignore
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