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from decimal import Decimal
from math import isnan
from pathlib import Path
from typing import Union
import pytest
import tomli
import tomli_w
COMPLIANCE_DIR = Path(__file__).parent / "data" / "toml-lang-compliance" / "valid"
EXTRAS_DIR = Path(__file__).parent / "data" / "extras" / "valid"
VALID_FILES = tuple(COMPLIANCE_DIR.glob("**/*.toml")) + tuple(
EXTRAS_DIR.glob("**/*.toml")
)
@pytest.mark.parametrize(
"valid",
VALID_FILES,
ids=[p.stem for p in VALID_FILES],
)
def test_valid(valid):
if valid.stem in {"qa-array-inline-nested-1000", "qa-table-inline-nested-1000"}:
pytest.xfail("This much recursion is not supported")
original_str = valid.read_bytes().decode()
original_data = tomli.loads(original_str)
dump_str = tomli_w.dumps(original_data)
after_dump_data = tomli.loads(dump_str)
assert replace_nans(after_dump_data) == replace_nans(original_data)
NAN = object()
def replace_nans(cont: Union[dict, list]) -> Union[dict, list]:
"""Replace NaNs with a sentinel object to fix the problem that NaN is not
equal to another NaN."""
for k, v in cont.items() if isinstance(cont, dict) else enumerate(cont):
if isinstance(v, (float, Decimal)) and isnan(v):
cont[k] = NAN
elif isinstance(v, dict) or isinstance(v, list):
cont[k] = replace_nans(cont[k])
return cont
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