Mercurial > hg
annotate tests/hypothesishelpers.py @ 30632:1d0e4832e616
convert: parse perforce data on-demand
We are using read-only attributes that parse the perforce data on
demand. We are reading the data only once whenever an attribute is
requested and use it throughout the import process. This is equivalent
to the previous behavior, but we are avoiding reading from perforce when
we initialize the object, but instead run it during the actual import
process, when the first attribute is requested (usually getheads(), see
`convertcmd.convert`).
author | David Soria Parra <davidsp@fb.com> |
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date | Tue, 20 Dec 2016 09:23:50 -0800 |
parents | 8699c89f3ae9 |
children | 2372284d9457 |
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1 # Helper module to use the Hypothesis tool in tests |
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2 # |
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3 # Copyright 2015 David R. MacIver |
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4 # |
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5 # For details see http://hypothesis.readthedocs.org |
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6 |
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7 from __future__ import absolute_import, print_function |
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8 import os |
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9 import sys |
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10 import traceback |
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11 |
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12 try: |
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13 # hypothesis 2.x |
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14 from hypothesis.configuration import set_hypothesis_home_dir |
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15 from hypothesis import settings |
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16 except ImportError: |
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17 # hypothesis 1.x |
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18 from hypothesis.settings import set_hypothesis_home_dir |
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19 from hypothesis import Settings as settings |
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20 import hypothesis.strategies as st |
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21 from hypothesis import given |
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22 |
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23 # hypothesis store data regarding generate example and code |
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24 set_hypothesis_home_dir(os.path.join( |
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25 os.getenv('TESTTMP'), ".hypothesis" |
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26 )) |
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27 |
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28 def check(*args, **kwargs): |
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29 """decorator to make a function a hypothesis test |
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30 |
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31 Decorated function are run immediately (to be used doctest style)""" |
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32 def accept(f): |
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33 # Workaround for https://github.com/DRMacIver/hypothesis/issues/206 |
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34 # Fixed in version 1.13 (released 2015 october 29th) |
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35 f.__module__ = '__anon__' |
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36 try: |
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37 with settings(max_examples=2000): |
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38 given(*args, **kwargs)(f)() |
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39 except Exception: |
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40 traceback.print_exc(file=sys.stdout) |
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41 sys.exit(1) |
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42 return accept |
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43 |
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44 |
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45 def roundtrips(data, decode, encode): |
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46 """helper to tests function that must do proper encode/decode roundtripping |
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47 """ |
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48 @given(data) |
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49 def testroundtrips(value): |
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50 encoded = encode(value) |
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51 decoded = decode(encoded) |
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52 if decoded != value: |
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53 raise ValueError( |
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54 "Round trip failed: %s(%r) -> %s(%r) -> %r" % ( |
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55 encode.__name__, value, decode.__name__, encoded, |
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56 decoded |
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57 )) |
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58 try: |
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59 testroundtrips() |
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60 except Exception: |
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61 # heredoc swallow traceback, we work around it |
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62 traceback.print_exc(file=sys.stdout) |
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63 raise |
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64 print("Round trip OK") |
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65 |
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66 |
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67 # strategy for generating bytestring that might be an issue for Mercurial |
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68 bytestrings = ( |
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69 st.builds(lambda s, e: s.encode(e), st.text(), st.sampled_from([ |
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70 'utf-8', 'utf-16', |
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71 ]))) | st.binary() |