57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
"""JSON 序列化与解析的规范化行为 [题面 附件2 4.1/5.1]。"""
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import json
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import pytest
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from referee.jsonio import (RequestFormatError, dumps, format_number,
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parse_request_object)
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@pytest.mark.parametrize("value,text", [
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(105, "105"), (0, "0"), (5.0, "5"), (105.5, "105.5"),
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(5282.843, "5282.843"), # 微秒时刻的最短表示
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(0.300001, "0.300001"),
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(123.45, "123.45"), # svd_deg 两位小数
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(True, None), # 布尔不是数值，放这里只为参数化完整
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])
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def test_format_number(value, text):
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if text is None:
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return
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assert format_number(value) == text
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def test_dumps_matches_official_number_style():
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body = {"accepted": True, "virtual_time_s": 105.0,
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"real_timestamp_ms": 1760000000000, "svd_deg": 123.45,
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"note": "中文", "ok": False, "none": None, "list": [1, 2.5]}
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text = dumps(body)
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assert '"virtual_time_s":105' in text # 不输出 105.0
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assert '"svd_deg":123.45' in text
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assert '"real_timestamp_ms":1760000000000' in text
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assert '"note":"中文"' in text # 非 ASCII 不转义
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assert json.loads(text) == body # 解析后语义不变
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@pytest.mark.parametrize("raw", [
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b'{"a":1,"a":2}', # 重复键
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b'\xef\xbb\xbf{}', # BOM
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b'[]', b'"str"', b'3', b'null', # 非对象
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b'{"a":NaN}', b'{"a":Infinity}',
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b'{"a":' + b'[' * 17 + b'0' + b']' * 17 + b'}', # 深度 17
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b'{"a":', b'', b'\xff',
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])
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def test_parse_rejections(raw):
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with pytest.raises(RequestFormatError):
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parse_request_object(raw)
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def test_parse_depth_16_is_legal():
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payload = json.loads(b'{"extra":' + b'[' * 15 + b'0' + b']' * 15 + b'}')
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assert parse_request_object(json.dumps(payload).encode()) == payload
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def test_parse_rejects_duplicated_nested_keys():
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with pytest.raises(RequestFormatError):
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parse_request_object(b'{"position":{"x":1,"x":2}}')
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