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# SPDX-License-Identifier: MIT
# SPDX-FileCopyrightText: 2021 Taneli Hukkinen
# Licensed to PSF under a Contributor Agreement.
"""Utilities for tests that are in the "burntsushi" format."""
import datetime
from typing import Any
# Aliases for converting TOML compliance format [1] to BurntSushi format [2]
# [1] https://github.com/toml-lang/compliance/blob/db7c3211fda30ff9ddb10292f4aeda7e2e10abc4/docs/json-encoding.md # noqa: E501
# [2] https://github.com/BurntSushi/toml-test/blob/4634fdf3a6ecd6aaea5f4cdcd98b2733c2694993/README.md # noqa: E501
_aliases = {
"boolean": "bool",
"offset datetime": "datetime",
"local datetime": "datetime-local",
"local date": "date-local",
"local time": "time-local",
}
def convert(obj): # noqa: C901
if isinstance(obj, str):
return {"type": "string", "value": obj}
elif isinstance(obj, bool):
return {"type": "bool", "value": str(obj).lower()}
elif isinstance(obj, int):
return {"type": "integer", "value": str(obj)}
elif isinstance(obj, float):
return {"type": "float", "value": _normalize_float_str(str(obj))}
elif isinstance(obj, datetime.datetime):
val = _normalize_datetime_str(obj.isoformat())
if obj.tzinfo:
return {"type": "datetime", "value": val}
return {"type": "datetime-local", "value": val}
elif isinstance(obj, datetime.time):
return {
"type": "time-local",
"value": _normalize_localtime_str(str(obj)),
}
elif isinstance(obj, datetime.date):
return {
"type": "date-local",
"value": str(obj),
}
elif isinstance(obj, list):
return [convert(i) for i in obj]
elif isinstance(obj, dict):
return {k: convert(v) for k, v in obj.items()}
raise Exception("unsupported type")
def normalize(obj: Any) -> Any:
"""Normalize test objects.
This normalizes primitive values (e.g. floats), and also converts from
TOML compliance format [1] to BurntSushi format [2].
[1] https://github.com/toml-lang/compliance/blob/db7c3211fda30ff9ddb10292f4aeda7e2e10abc4/docs/json-encoding.md # noqa: E501
[2] https://github.com/BurntSushi/toml-test/blob/4634fdf3a6ecd6aaea5f4cdcd98b2733c2694993/README.md # noqa: E501
"""
if isinstance(obj, list):
return [normalize(item) for item in obj]
if isinstance(obj, dict):
if "type" in obj and "value" in obj:
type_ = obj["type"]
norm_type = _aliases.get(type_, type_)
value = obj["value"]
if norm_type == "float":
norm_value = _normalize_float_str(value)
elif norm_type in {"datetime", "datetime-local"}:
norm_value = _normalize_datetime_str(value)
elif norm_type == "time-local":
norm_value = _normalize_localtime_str(value)
else:
norm_value = value
if norm_type == "array":
return [normalize(item) for item in value]
return {"type": norm_type, "value": norm_value}
return {k: normalize(v) for k, v in obj.items()}
raise AssertionError("Burntsushi fixtures should be dicts/lists only")
def _normalize_datetime_str(dt_str: str) -> str:
if dt_str[-1].lower() == "z":
dt_str = dt_str[:-1] + "+00:00"
date = dt_str[:10]
rest = dt_str[11:]
if "+" in rest:
sign = "+"
elif "-" in rest:
sign = "-"
else:
sign = ""
if sign:
time, _, offset = rest.partition(sign)
else:
time = rest
offset = ""
time = time.rstrip("0") if "." in time else time
return date + "T" + time + sign + offset
def _normalize_localtime_str(lt_str: str) -> str:
return lt_str.rstrip("0") if "." in lt_str else lt_str
def _normalize_float_str(float_str: str) -> str:
as_float = float(float_str)
# Normalize "-0.0" and "+0.0"
if as_float == 0:
return "0"
return str(as_float)
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