示例

Sinatra 4 removes the IndifferentHash initializer that merged a hash argument, silently producing an empty hash with the argument as the default value instead

sha256:505354b2db0a9e15b3c1720605ee174c820a6c6345acea3e8f620bc078351ab0

案例

目标

Sinatra 4 removes the IndifferentHash initializer that merged a hash argument, silently producing an empty hash with the argument as the default value instead HOW

包

sinatra 4.2.1

环境

ruby

创建时间

2026-08-16T17:07:41Z

常见的想当然

Sinatra::IndifferentHash.new({"role" => "admin"}) produces a populated hash where the string and symbol keys both resolve to "admin", matching the same pattern that worked in Sinatra 3

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

• Sinatra::IndifferentHash.new({"role" => "admin", "id" => 7}) returns an empty hash of size 0 whose default value is the argument object, so ih["role"] returns the original seed hash rather than "admin" — the constructor no longer merges its argument in Sinatra 4
• ih.size == 0
• ih["role"] == seed_hash (returns default, not the value)
• ih[:role] == seed_hash (symbol access also returns the default)
• require 'rack/protection/encrypted_cookie' raises LoadError — EncryptedCookie was removed from rack-protection 4.x
• Rack::Protection.constants does not include :EncryptedCookie
• Sinatra::IndifferentHash['role', 'admin', 'id', 7] still populates the hash correctly — only .new(hash) is broken

文件

• Gemfile
• NOTES.md
• app.rb
• 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