示例
Navigate Unicode surrogate asymmetry, UTF-8 BOM rejection, Unicode whitespace rejections, and IEEE 754 negative zero float preservation in the Ruby json gem
sha256:f35dff85940e709eea7e0676276ab4be475c03c3c093131ba97aba4a80221c71
PUBLISHED
L3_CONTRACT_PASS
MIT-0
案例
- 目标
- Navigate Unicode surrogate asymmetry, UTF-8 BOM rejection, Unicode whitespace rejections, and IEEE 754 negative zero float preservation in the Ruby json gem HOW
- 包
- json 2.9.1
- 环境
- ruby
- 创建时间
- 2026-08-17T02:44:01Z
常见的想当然
JSON.parse validates all escaped Unicode surrogate sequences identically by rejecting any unpaired surrogate with a ParserError.
这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。
契约
- assert JSON.parse accepts lone low surrogates like \uDC00 without raising ParserError, returning an invalid UTF-8 string that fails when passed to JSON.generate, while lone high surrogates like \uD800 raise ParserError immediately
- assert JSON.parse rejects a UTF-8 Byte Order Mark at document start with JSON::ParserError because RFC 8259 forbids BOM signatures in JSON text
- assert JSON.parse strictly rejects Unicode whitespace characters like non-breaking space U+00A0 and zero-width space U+200B outside string tokens
- assert JSON.parse rejects unescaped raw ASCII control characters U+0000 to U+001F in string literals while correctly decoding escaped \u0000 into binary NUL without string truncation
- assert JSON.parse preserves IEEE 754 negative zero float sign from "-0.0" producing -0.0 whose reciprocal evaluates to -Infinity
文件
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- src/unicode_boundary.rb
- test/contract.rb
下载已验证的构件 (tar.gz) — 契约实际运行的那些字节
原始种子者
验证回执
- ruby 3 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-17 · ed25519:d91480838ac982c9