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"""Tests for the ijson.basic_parse method"""
import itertools
import threading
from decimal import Decimal
import pytest
from ijson import common
from .test_base import ARRAY_JSON, ARRAY_JSON_EVENTS, INCOMPLETE_JSONS, INCOMPLETE_JSON_TOKENS, INVALID_JSONS, JSON, JSON_EVENTS, SCALAR_JSON, SURROGATE_PAIRS_JSON, STRINGS_JSON
def _raises_json_error(adaptor, json, **kwargs):
with pytest.raises(common.JSONError):
adaptor.basic_parse(json, **kwargs)
def _raises_incomplete_json_error(adaptor, json):
with pytest.raises(common.IncompleteJSONError):
adaptor.basic_parse(json)
def test_basic_parse(adaptor):
assert JSON_EVENTS == adaptor.basic_parse(JSON)
def test_basic_parse_threaded(adaptor):
thread = threading.Thread(target=test_basic_parse, args=(adaptor,))
thread.start()
thread.join()
def test_basic_parse_array(adaptor):
assert ARRAY_JSON_EVENTS == adaptor.basic_parse(ARRAY_JSON)
def test_basic_parse_array_threaded(adaptor):
thread = threading.Thread(target=test_basic_parse_array, args=(adaptor,))
thread.start()
thread.join()
def test_scalar(adaptor):
assert [('number', 0)] == adaptor.basic_parse(SCALAR_JSON)
def test_strings(adaptor):
events = adaptor.basic_parse(STRINGS_JSON)
strings = [value for event, value in events if event == 'string']
assert ['', '"', '\\', '\\\\', '\b\f\n\r\t'] == strings
assert ('map_key', 'special\t') in events
def test_surrogate_pairs(adaptor):
event = adaptor.basic_parse(SURROGATE_PAIRS_JSON)[0]
parsed_string = event[1]
assert '💩' == parsed_string
def _get_numbers(adaptor, json, use_float):
events = adaptor.basic_parse(json, use_float=use_float)
return [value for event, value in events if event == 'number']
@pytest.mark.parametrize(
"json, expected_float_type, expected_numbers, use_float",
(
(b'[1, 1.0, 1E2]', Decimal, [1, Decimal("1.0"), Decimal("1e2")], False),
(b'[1, 1.0, 1E2]', float, [1, 1., 100.], True),
(b'1e400', Decimal, [Decimal('1e400')], False),
(b'1e-400', Decimal, [Decimal('1e-400')], False),
(b'1e-400', float, [0], True),
)
)
def test_numbers(adaptor, json, expected_float_type, expected_numbers, use_float):
"""Check that numbers are correctly parsed"""
numbers = _get_numbers(adaptor, json, use_float=use_float)
float_types = set(type(number) for number in numbers)
float_types -= {int}
assert 1 == len(float_types)
assert expected_float_type == next(iter(float_types))
assert expected_numbers == numbers
def test_32bit_ints(adaptor):
"""Test for 64-bit integers support when using use_float=true"""
past32bits = 2 ** 32 + 1
past32bits_as_json = ('%d' % past32bits).encode('utf8')
if adaptor.backend.capabilities.int64:
parsed_number = _get_numbers(adaptor, past32bits_as_json, use_float=True)[0]
assert past32bits == parsed_number
else:
_raises_json_error(adaptor, past32bits_as_json, use_float=True)
def test_max_double(adaptor):
"""Check that numbers bigger than MAX_DOUBLE (usually ~1e308) cannot be represented"""
_raises_json_error(adaptor, b'1e400', use_float=True)
@pytest.mark.parametrize(
"json", [
sign + prefix + suffix
for sign, prefix, suffix in itertools.product(
(b'', b'-'),
(b'00', b'01', b'001'),
(b'', b'.0', b'e0', b'E0')
)
]
)
def test_invalid_leading_zeros(adaptor, json):
"""Check leading zeros are invalid"""
if not adaptor.backend.capabilities.invalid_leading_zeros_detection:
return
_raises_json_error(adaptor, json)
@pytest.mark.parametrize("json", (b'1e', b'0.1e', b'0E'))
def test_incomplete_exponents(adaptor, json):
"""incomplete exponents are invalid JSON"""
_raises_json_error(adaptor, json)
@pytest.mark.parametrize("json", (b'1.', b'.1'))
def test_incomplete_fractions(adaptor, json):
"""incomplete fractions are invalid JSON"""
_raises_json_error(adaptor, json)
def test_incomplete(adaptor):
for json in INCOMPLETE_JSONS:
_raises_incomplete_json_error(adaptor, json)
def test_incomplete_tokens(adaptor):
if not adaptor.backend.capabilities.incomplete_json_tokens_detection:
return
for json in INCOMPLETE_JSON_TOKENS:
_raises_incomplete_json_error(adaptor, json)
def test_invalid(adaptor):
for json in INVALID_JSONS:
if not adaptor.backend.capabilities.incomplete_json_tokens_detection and json == INVALID_JSON_WITH_DANGLING_JUNK:
continue
_raises_json_error(adaptor, json)
def test_comments(adaptor):
json = b'{"a": 2 /* a comment */}'
if adaptor.backend.capabilities.c_comments:
events = adaptor.basic_parse(json, allow_comments=True)
assert events is not None
else:
with pytest.raises(ValueError):
adaptor.basic_parse(json, allow_comments=True)
def test_multiple_values_raises_if_not_supported(adaptor):
"""Test that setting multiple_values raises if not supported"""
if not adaptor.backend.capabilities.multiple_values:
with pytest.raises(ValueError):
adaptor.basic_parse("", multiple_values=True)
def test_multiple_values(adaptor):
"""Test that multiple_values are supported"""
multiple_json = JSON + JSON + JSON
with pytest.raises(common.JSONError):
adaptor.basic_parse(multiple_json)
with pytest.raises(common.JSONError):
adaptor.basic_parse(multiple_json, multiple_values=False)
result = adaptor.basic_parse(multiple_json, multiple_values=True)
assert JSON_EVENTS + JSON_EVENTS + JSON_EVENTS == result
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