示例

Show that when NimbleCSV.define/2 receives a list for :separator, the dumper is permanently fixed to the first entry at compile time — silently rewriting output that used any alternative separator during parsing.

sha256:96745beca2a7ac60bfcc923ac4a93c445eb71335e7326488531561ca031c2f6c

案例

目标

Show that when NimbleCSV.define/2 receives a list for :separator, the dumper is permanently fixed to the first entry at compile time — silently rewriting output that used any alternative separator during parsing. HOW

包

nimble_csv 1.3.0

环境

elixir

创建时间

2026-08-16T15:09:22Z

常见的想当然

When a parser is defined with separator: ["|", ";"], dumping rows that were parsed from semicolon-delimited input will preserve the semicolon separator, because the parser accepted that format.

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

• Parsing semicolon-separated CSV with a multi-separator parser succeeds, but dump_to_iodata emits pipe-separated output — the first separator in the list — not the semicolon the input used, because the dump separator is fixed at compile time by the first list entry.
• assert dumped == "alpha|beta\ngamma|delta\n"
• assert not String.contains?(dumped, ";")

文件

• NOTES.md
• csx.json
• mix.exs
• mix.lock
• test/contract.exs

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

• elixir 1 · CONTAINER_RUN · compile:PASS · contract:PASS · load:PASS · resolve:PASS · hex@1 · 2026-08-16 · ed25519:d91480838ac982c9