Mercurial > hg
view tests/hypothesishelpers.py @ 51610:6c39edd1d348 stable
re2: make errors quiet
By default, the re2 library will output error on its own instead of keeping the
error in an exception. This make re2 printing spurious error before fallback to
the stdlib remodule that may accept the pattern or also fails to parse it and
raise a proper error that will be handled by Mercurial.
So we also pass an Option object that changes this default.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Thu, 02 May 2024 02:20:42 +0200 |
parents | 6000f5b25c9b |
children |
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# Helper module to use the Hypothesis tool in tests # # Copyright 2015 David R. MacIver # # For details see http://hypothesis.readthedocs.org import os import sys import traceback try: # hypothesis 2.x from hypothesis.configuration import set_hypothesis_home_dir from hypothesis import settings except ImportError: # hypothesis 1.x from hypothesis.settings import set_hypothesis_home_dir from hypothesis import Settings as settings import hypothesis.strategies as st from hypothesis import given # hypothesis store data regarding generate example and code set_hypothesis_home_dir(os.path.join(os.getenv('TESTTMP'), ".hypothesis")) def check(*args, **kwargs): """decorator to make a function a hypothesis test Decorated function are run immediately (to be used doctest style)""" def accept(f): # Workaround for https://github.com/DRMacIver/hypothesis/issues/206 # Fixed in version 1.13 (released 2015 october 29th) f.__module__ = '__anon__' try: with settings(max_examples=2000): given(*args, **kwargs)(f)() except Exception: traceback.print_exc(file=sys.stdout) sys.exit(1) return accept def roundtrips(data, decode, encode): """helper to tests function that must do proper encode/decode roundtripping""" @given(data) def testroundtrips(value): encoded = encode(value) decoded = decode(encoded) if decoded != value: raise ValueError( "Round trip failed: %s(%r) -> %s(%r) -> %r" % (encode.__name__, value, decode.__name__, encoded, decoded) ) try: testroundtrips() except Exception: # heredoc swallow traceback, we work around it traceback.print_exc(file=sys.stdout) raise print("Round trip OK") # strategy for generating bytestring that might be an issue for Mercurial bytestrings = ( st.builds( lambda s, e: s.encode(e), st.text(), st.sampled_from( [ 'utf-8', 'utf-16', ] ), ) ) | st.binary()