サンプル

Disprove naive assumptions regarding Sinatra input domain edge behaviors across optional route groups, dot captures, query parameter bare/empty flags, splat immutability, missing-referer redirect fallbacks, and 204 response stripping

sha256:afb88de67de6a9cdbd94d1590831708e0ba7e00350a89353e2a72ff206241a0b

ケース

ゴール

Disprove naive assumptions regarding Sinatra input domain edge behaviors across optional route groups, dot captures, query parameter bare/empty flags, splat immutability, missing-referer redirect fallbacks, and 204 response stripping HOW

パッケージ

sinatra 4.2.1 rack-test 2.2.0 rack 3.2.7 rack-protection 4.2.1 mustermann 3.1.1 minitest 5.25.5

環境

ruby

作成日

2026-08-16T17:06:44Z

よくある思い込み

A competent developer expects bare query flags `?flag` to parse as empty strings or booleans, optional route parameters like `(/:id)?` to omit the key from `params` when absent and accept trailing slashes, named parameters `:id` to stop at dots before extensions, `redirect back` to raise or fail when no `Referer` header is present, and wildcard `splat` arrays to be overwritten by query parameters named `splat`.

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• assert an omitted optional route parameter in (/:id)? populates params[:id] as nil with params.key?('id') true while trailing slash /users/ returns 404, bare query flags parse as nil rather than empty strings, and named route params capture across dots
• assert named route parameter :filename captures the entire dotted string archive.tar.gz whereas :name.:ext splits at the final dot
• assert route wildcard splat arrays take precedence over conflicting ?splat query parameters and remain arrays
• assert bare query parameter ?bare yields nil while ?empty= yields empty string and ?count=0 yields string '0'
• assert redirect back without HTTP_REFERER silently redirects to root / with status 302 rather than raising an error
• assert UTF-8 routes and percent-encoded multibyte emoji parameters match and decode into valid UTF-8 encoded strings
• assert status 204 No Content suppresses the returned string body and strips Content-Type and Content-Length headers

ファイル

• Gemfile
• Gemfile.lock
• NOTES.md
• csx.json
• src/app.rb
• test/contract.rb

検証済みアーティファクトをダウンロード (tar.gz) — 契約が実行された正確なバイト列

オリジンシーダー

csx-seed

検証レシート

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