Mercurial > hg
view tests/hypothesishelpers.py @ 40174:64360202d5b2
debugcommands: support wrapping long lines
If a line within a block is indented more than the line that came before,
we automatically concatenate it with the previous line. This allows us to
pretty format data. This will make tests easier to read.
At some point we may just want to evaluate entire blocks as Python
code or something, as even with this change, things aren't perfect, as we
can't e.g. have formatting like:
foo eval:[
True
]
But this is strictly better than before, where we couldn't wrap long lines.
Differential Revision: https://phab.mercurial-scm.org/D4977
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 11 Oct 2018 09:47:52 +0200 |
parents | 8699c89f3ae9 |
children | 2372284d9457 |
line wrap: on
line source
# Helper module to use the Hypothesis tool in tests # # Copyright 2015 David R. MacIver # # For details see http://hypothesis.readthedocs.org from __future__ import absolute_import, print_function 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()