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|
# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis/
#
# Copyright the Hypothesis Authors.
# Individual contributors are listed in AUTHORS.rst and the git log.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/.
import os
import sys
import tempfile
import time
import unicodedata
from typing import get_args
from hypothesis import given, strategies as st
from hypothesis.internal import charmap as cm
from hypothesis.internal.intervalsets import IntervalSet
from tests.common.utils import skipif_threading
def test_charmap_contains_all_unicode():
n = 0
for vs in cm.charmap().values():
for u, v in vs:
n += v - u + 1
assert n == sys.maxunicode + 1
def test_charmap_has_right_categories():
for cat, intervals in cm.charmap().items():
for u, v in intervals:
for i in range(u, v + 1):
real = unicodedata.category(chr(i))
assert real == cat, f"{i} is {real} but reported in {cat}"
def assert_valid_range_list(ls):
for u, v in ls:
assert u <= v
for i in range(len(ls) - 1):
assert ls[i] <= ls[i + 1]
assert ls[i][-1] < ls[i + 1][0]
@given(st.sets(st.sampled_from(cm.categories())))
def test_query_matches_categories(cats):
values = cm.query(categories=cats).intervals
assert_valid_range_list(values)
for u, v in values:
for i in (u, v, (u + v) // 2):
assert unicodedata.category(chr(i)) in cats
@given(
st.sets(st.sampled_from(cm.categories())) | st.none(),
st.integers(0, sys.maxunicode),
st.integers(0, sys.maxunicode),
)
def test_query_matches_categories_codepoints(cats, m1, m2):
m1, m2 = sorted((m1, m2))
values = cm.query(categories=cats, min_codepoint=m1, max_codepoint=m2).intervals
assert_valid_range_list(values)
for u, v in values:
assert m1 <= u
assert v <= m2
# any test which sets `_charmap = None` is thread-unsafe.
@skipif_threading
def test_reload_charmap():
x = cm.charmap()
assert x is cm.charmap()
cm._charmap = None
y = cm.charmap()
assert x is not y
assert x == y
@skipif_threading
def test_recreate_charmap():
x = cm.charmap()
assert x is cm.charmap()
cm._charmap = None
cm.charmap_file().unlink()
y = cm.charmap()
assert x is not y
assert x == y
@skipif_threading
def test_uses_cached_charmap():
cm.charmap()
# Reset the last-modified time of the cache file to a point in the past.
mtime = int(time.time() - 1000)
os.utime(cm.charmap_file(), (mtime, mtime))
statinfo = cm.charmap_file().stat()
assert statinfo.st_mtime == mtime
# Force reload of charmap from cache file and check that mtime is unchanged.
cm._charmap = None
cm.charmap()
statinfo = cm.charmap_file().stat()
assert statinfo.st_mtime == mtime
def _union_intervals(x, y):
return IntervalSet(x).union(IntervalSet(y)).intervals
def test_union_empty():
assert _union_intervals([], []) == ()
assert _union_intervals([], [[1, 2]]) == ((1, 2),)
assert _union_intervals([[1, 2]], []) == ((1, 2),)
def test_union_handles_totally_overlapped_gap():
# < xx > Imagine the intervals x and y as bit strings.
# | <yy yy> The bit at position n is set if n falls inside that interval.
# = <zzzzz> In this model _union_intervals() performs bit-wise or.
assert _union_intervals([[2, 3]], [[1, 2], [4, 5]]) == ((1, 5),)
def test_union_handles_partially_overlapped_gap():
# < x > Imagine the intervals x and y as bit strings.
# | <yy y> The bit at position n is set if n falls inside that interval.
# = <zzz z> In this model _union_intervals() performs bit-wise or.
assert _union_intervals([[3, 3]], [[1, 2], [5, 5]]) == ((1, 3), (5, 5))
def test_successive_union():
x = []
for v in cm.charmap().values():
x = _union_intervals(x, v)
assert x == ((0, sys.maxunicode),)
@skipif_threading
def test_can_handle_race_between_exist_and_create(monkeypatch):
x = cm.charmap()
cm._charmap = None
monkeypatch.setattr(os.path, "exists", lambda p: False)
y = cm.charmap()
assert x is not y
assert x == y
@skipif_threading
def test_exception_in_write_does_not_lead_to_broken_charmap(monkeypatch):
def broken(*args, **kwargs):
raise ValueError
cm._charmap = None
monkeypatch.setattr(os.path, "exists", lambda p: False)
monkeypatch.setattr(os, "rename", broken)
cm.charmap()
cm.charmap()
@skipif_threading
def test_regenerate_broken_charmap_file():
cm.charmap()
cm.charmap_file().write_bytes(b"") # overwrite with empty file
cm._charmap = None
cm.charmap()
def test_exclude_characters_are_included_in_key():
assert cm.query().intervals != cm.query(exclude_characters="0").intervals
@skipif_threading
def test_error_writing_charmap_file_is_suppressed(monkeypatch):
def broken_mkstemp(dir):
raise RuntimeError
monkeypatch.setattr(tempfile, "mkstemp", broken_mkstemp)
try:
# Cache the charmap to avoid a performance hit the next time
# somebody tries to use it.
saved = cm._charmap
cm._charmap = None
cm.charmap_file().unlink()
cm.charmap()
finally:
cm._charmap = saved
def test_categoryname_literal_is_correct():
minor_categories = set(cm.categories())
major_categories = {c[0] for c in minor_categories}
assert set(get_args(cm.CategoryName)) == minor_categories | major_categories
|
