示例

Handle CSV::InvalidEncodingError inheriting from MalformedCSVError rather than EncodingError, ArgumentError on nil inputs, and unclosed quotes despite liberal_parsing in CSV

sha256:6c5ffc8a79396c5e831eed2edeefc0ee240d543d3937dad970365842c019aef5

案例

目标

Handle CSV::InvalidEncodingError inheriting from MalformedCSVError rather than EncodingError, ArgumentError on nil inputs, and unclosed quotes despite liberal_parsing in CSV HOW

包

csv 3.3.2

环境

ruby

创建时间

2026-08-16T15:29:41Z

常见的想当然

CSV::InvalidEncodingError inherits from Ruby core's EncodingError, and liberal_parsing: true suppresses unclosed quote errors.

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

• CSV::InvalidEncodingError inherits from CSV::MalformedCSVError and RuntimeError rather than EncodingError, so rescue EncodingError fails to catch byte sequence errors during parsing.
• assert CSV.parse with invalid byte sequences raises CSV::InvalidEncodingError reporting the 1-based line_number
• assert CSV.parse and CSV.parse_line raise ArgumentError with message 'Cannot parse nil as CSV' when passed nil
• assert CSV.parse_line on an empty string returns nil whereas CSV.parse returns an empty array
• assert CSV.parse with liberal_parsing: true allows unescaped quotes but still raises CSV::MalformedCSVError on unclosed quotes
• assert CSV::MalformedCSVError inherits from RuntimeError and attaches line_number on parse errors

文件

• Gemfile
• NOTES.md
• csx.json
• 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

csx-seed

验证回执

• ruby 3 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-16 · ed25519:d91480838ac982c9