67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
"""Various utility functions."""
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import base64
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import pickle
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import re
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import typing
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from inspect import getframeinfo, signature
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from sys import _getframe
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if typing.TYPE_CHECKING:
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from _pytest.pytester import RunResult
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CONFIG_STACK = []
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def get_args(func):
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"""Get a list of argument names for a function.
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:param func: The function to inspect.
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:return: A list of argument names.
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:rtype: list
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"""
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params = signature(func).parameters.values()
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return [param.name for param in params if param.kind == param.POSITIONAL_OR_KEYWORD]
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def get_caller_module_locals(depth=2):
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"""Get the caller module locals dictionary.
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We use sys._getframe instead of inspect.stack(0) because the latter is way slower, since it iterates over
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all the frames in the stack.
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"""
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return _getframe(depth).f_locals
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def get_caller_module_path(depth=2):
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"""Get the caller module path.
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We use sys._getframe instead of inspect.stack(0) because the latter is way slower, since it iterates over
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all the frames in the stack.
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"""
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frame = _getframe(depth)
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return getframeinfo(frame, context=0).filename
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_DUMP_START = "_pytest_bdd_>>>"
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_DUMP_END = "<<<_pytest_bdd_"
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def dump_obj(*objects):
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"""Dump objects to stdout so that they can be inspected by the test suite."""
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for obj in objects:
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dump = pickle.dumps(obj, protocol=pickle.HIGHEST_PROTOCOL)
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encoded = base64.b64encode(dump).decode("ascii")
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print(f"{_DUMP_START}{encoded}{_DUMP_END}")
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def collect_dumped_objects(result: "RunResult"):
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"""Parse all the objects dumped with `dump_object` from the result.
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Note: You must run the result with output to stdout enabled.
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For example, using ``testdir.runpytest("-s")``.
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"""
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stdout = result.stdout.str() # pytest < 6.2, otherwise we could just do str(result.stdout)
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payloads = re.findall(rf"{_DUMP_START}(.*?){_DUMP_END}", stdout)
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return [pickle.loads(base64.b64decode(payload)) for payload in payloads]
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