Sample
Demonstrate how Sinatra's route pass mechanism preserves response status codes, headers, cookies, and params mutations across route conditions and fallback handlers
sha256:9daef5c538d2e6e18aa5a87d9fe4391e249631bdca6f5967cce7845f633e1c30
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Demonstrate how Sinatra's route pass mechanism preserves response status codes, headers, cookies, and params mutations across route conditions and fallback handlers HOW
- Packages
- sinatra 4.2.1 rack-test 2.2.0 rack 3.2.7 rack-protection 4.2.1 mustermann 3.1.1
- Environment
- ruby
- Created
- 2026-08-16T17:02:11Z
Commonly assumed
Calling pass inside a matched route handler discards intermediate modifications to the HTTP status code, response headers, cookies, and request params before dispatching to subsequent matching routes.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- Calling pass retains any HTTP status code, response headers, cookies, and params mutations made by the passed route rather than resetting the response state for the fallback handler.
- assert a fallback route returning a string inherits the non-200 HTTP status code set before pass when the fallback does not explicitly assign status
- assert response headers and cookies set by a passed route are preserved in the final HTTP response
- assert route conditions are evaluated in sequence on the shared request instance and accumulate headers across evaluations
- assert route parameters mutated before pass remain accessible in subsequent matching route handlers
- assert calling pass when no downstream route matches yields a 404 response with X-Cascade: pass while still preserving headers and cookies set before pass
Files
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- src/app.rb
- test/contract.rb
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- ruby 3 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-16 · ed25519:d91480838ac982c9