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#encoding: utf-8
import pytest
import sys
from hypothesis import given, strategies, settings, example
from rpython.rlib import rutf8, runicode
from rpython.rlib.unicodedata import unicodedb_12_1_0
@given(strategies.characters(), strategies.booleans())
def test_unichr_as_utf8(c, allow_surrogates):
i = ord(c)
if not allow_surrogates and 0xD800 <= i <= 0xDFFF:
with pytest.raises(rutf8.OutOfRange):
rutf8.unichr_as_utf8(i, allow_surrogates)
else:
u = rutf8.unichr_as_utf8(i, allow_surrogates)
assert u == c.encode('utf8')
@given(strategies.binary())
def test_check_ascii(s):
raised = False
try:
s.decode('ascii')
except UnicodeDecodeError as e:
raised = True
try:
rutf8.check_ascii(s)
except rutf8.CheckError:
assert raised
else:
assert not raised
@given(strategies.binary(), strategies.booleans())
@example('\xf1\x80\x80\x80', False)
def test_check_utf8(s, allow_surrogates):
_test_check_utf8(s, allow_surrogates)
@given(strategies.text(), strategies.booleans())
def test_check_utf8_valid(u, allow_surrogates):
_test_check_utf8(u.encode('utf-8'), allow_surrogates)
@given(strategies.binary(), strategies.text(), strategies.binary())
def test_check_utf8_slice(a, b, c):
start = len(a)
b_utf8 = b.encode('utf-8')
end = start + len(b_utf8)
assert rutf8.check_utf8(a + b_utf8 + c, False, start, end) == len(b)
def _has_surrogates(s):
for u in s.decode('utf8'):
if 0xD800 <= ord(u) <= 0xDFFF:
return True
return False
def _test_check_utf8(s, allow_surrogates):
try:
u, _ = runicode.str_decode_utf_8(s, len(s), None, final=True,
allow_surrogates=allow_surrogates)
valid = True
except UnicodeDecodeError as e:
valid = False
length = rutf8._check_utf8(s, allow_surrogates, 0, len(s))
if length < 0:
assert not valid
assert ~(length) == e.start
else:
assert valid
if sys.maxunicode == 0x10FFFF or not _has_surrogates(s):
assert length == len(u)
@given(strategies.characters())
def test_next_pos(uni):
skips = []
for elem in uni:
skips.append(len(elem.encode('utf8')))
pos = 0
i = 0
utf8 = uni.encode('utf8')
while pos < len(utf8):
new_pos = rutf8.next_codepoint_pos(utf8, pos)
assert new_pos - pos == skips[i]
i += 1
pos = new_pos
def test_check_newline_utf8():
for i in xrange(sys.maxunicode):
if runicode.unicodedb.islinebreak(i):
assert rutf8.islinebreak(unichr(i).encode('utf8'), 0)
else:
assert not rutf8.islinebreak(unichr(i).encode('utf8'), 0)
def test_isspace_utf8():
for i in xrange(sys.maxunicode):
if runicode.unicodedb.isspace(i):
assert rutf8.isspace(unichr(i).encode('utf8'), 0)
else:
assert not rutf8.isspace(unichr(i).encode('utf8'), 0)
@given(strategies.characters(), strategies.text())
def test_utf8_in_chars(ch, txt):
response = rutf8.utf8_in_chars(ch.encode('utf8'), 0, txt.encode('utf8'))
r = (ch in txt)
assert r == response
@given(strategies.text(), strategies.integers(min_value=0),
strategies.integers(min_value=0))
def test_codepoints_in_utf8(u, start, len1):
end = start + len1
if end > len(u):
extra = end - len(u)
else:
extra = 0
count = rutf8.codepoints_in_utf8(u.encode('utf8'),
len(u[:start].encode('utf8')),
len(u[:end].encode('utf8')) + extra)
assert count == len(u[start:end])
@given(strategies.text())
def test_utf8_index_storage(u):
index = rutf8.create_utf8_index_storage(u.encode('utf8'), len(u))
for i, item in enumerate(u):
assert (rutf8.codepoint_at_index(u.encode('utf8'), index, i) ==
ord(item))
@given(strategies.text(min_size=63))
@example(u'x' * 64 * 5)
@example(u'x' * (64 * 5 - 1))
def test_codepoint_position_at_index(u):
index = rutf8.create_utf8_index_storage(u.encode('utf8'), len(u))
for i in range(len(u) + 1):
assert (rutf8.codepoint_position_at_index(u.encode('utf8'), index, i) ==
len(u[:i].encode('utf8')))
@given(strategies.text(min_size=63))
@example(u'x' * 64 * 5)
@example(u'x' * (64 * 5 - 1))
@example(u'ä' + u'x«' * 1000 + u'–' + u'y' * 100)
def test_codepoint_index_at_byte_position(u):
b = u.encode('utf8')
storage = rutf8.create_utf8_index_storage(b, len(u))
for i in range(len(u) + 1):
bytepos = len(u[:i].encode('utf8'))
assert rutf8.codepoint_index_at_byte_position(
b, storage, bytepos, len(u)) == i
@given(strategies.text(min_size=63))
def test_codepoint_position_at_index_inverse(u):
b = u.encode('utf8')
storage = rutf8.create_utf8_index_storage(b, len(u))
for i in range(len(u) + 1):
bytepos = rutf8.codepoint_position_at_index(b, storage, i)
assert rutf8.codepoint_index_at_byte_position(
b, storage, bytepos, len(u)) == i
repr_func = rutf8.make_utf8_escape_function(prefix='u', pass_printable=False,
quotes=True)
@given(strategies.text())
def test_repr(u):
assert repr(u) == repr_func(u.encode('utf8'))
@given(strategies.lists(strategies.characters()))
@example([u'\ud800', u'\udc00'])
def test_surrogate_in_utf8(unichars):
uni = ''.join([u.encode('utf8') for u in unichars])
result = rutf8.surrogate_in_utf8(uni) >= 0
expected = any(uch for uch in unichars if u'\ud800' <= uch <= u'\udfff')
assert result == expected
def test_utf8_string_builder():
s = rutf8.Utf8StringBuilder()
s.append("foo")
s.append_char("x")
assert s.getlength() == 4
assert s.build() == "foox"
s.append(u"\u1234".encode("utf8"))
assert s.getlength() == 5
assert s.build().decode("utf8") == u"foox\u1234"
s.append("foo")
s.append_char("x")
assert s.getlength() == 9
assert s.build().decode("utf8") == u"foox\u1234foox"
s = rutf8.Utf8StringBuilder()
s.append_code(0x1234)
assert s.build().decode("utf8") == u"\u1234"
assert s.getlength() == 1
s.append_code(0xD800)
assert s.getlength() == 2
s = rutf8.Utf8StringBuilder()
s.append_utf8("abc", 3)
assert s.getlength() == 3
assert s.build().decode("utf8") == u"abc"
s.append_utf8(u"\u1234".encode("utf8"), 1)
assert s.build().decode("utf8") == u"abc\u1234"
assert s.getlength() == 4
s.append_code(0xD800)
assert s.getlength() == 5
s.append_utf8_slice(u"äöüß".encode("utf-8"), 2, 6, 2)
assert s.getlength() == 7
assert s.build().decode("utf-8") == u"abc\u1234\ud800öü"
def test_utf8_string_builder_bad_code():
s = rutf8.Utf8StringBuilder()
with pytest.raises(rutf8.OutOfRange):
s.append_code(0x110000)
assert s.build() == ''
assert s.getlength() == 0
@given(strategies.text())
def test_utf8_iterator(arg):
u = rutf8.Utf8StringIterator(arg.encode('utf8'))
l = []
for c in u:
l.append(unichr(c))
assert list(arg) == l
@given(strategies.text())
def test_utf8_iterator_pos(arg):
utf8s = arg.encode('utf8')
u = rutf8.Utf8StringPosIterator(utf8s)
l = []
i = 0
for c, pos in u:
l.append(unichr(c))
assert c == rutf8.codepoint_at_pos(utf8s, pos)
assert pos == i
i = rutf8.next_codepoint_pos(utf8s, i)
assert list(arg) == l
@given(strategies.text(), strategies.integers(0xd800, 0xdfff))
def test_has_surrogates(arg, surrogate):
b = (arg + unichr(surrogate) + arg).encode("utf-8")
assert not rutf8.has_surrogates(arg.encode("utf-8"))
assert rutf8.has_surrogates(unichr(surrogate).encode("utf-8"))
assert rutf8.has_surrogates(b)
def test_has_surrogate_xed_no_surrogate():
u = unichr(55217) + unichr(54990)
b = u.encode("utf-8")
assert b.startswith(b"\xed")
assert not rutf8.has_surrogates(b)
printable_repr_func = rutf8.make_utf8_escape_function(pass_printable=True,
quotes=True,
unicodedb=unicodedb_12_1_0)
def test_printable_repr_func():
s = u'\U0001f42a'.encode("utf-8")
assert printable_repr_func(s) == "'" + s + "'"
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