Sample

Show that a missing upload path in Rack::Test does not raise a filesystem-style error.

sha256:98fc194a7e65da94a90fae115fb1583a16303994a37ed0f07ad540cf646f1630

Case

Goal

Show that a missing upload path in Rack::Test does not raise a filesystem-style error. HOW

Packages

rack-test 2.2.0

Environment

ruby

Created

2026-08-16T16:42:53Z

Commonly assumed

Passing a missing file path to `Rack::Test::UploadedFile.new` should raise a filesystem exception such as `Errno::ENOENT`, not a generic runtime error.

The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.

Contract

• assert_raises(RuntimeError) { Rack::Test::UploadedFile.new('data/missing.bin') }
• assert_equal('data/missing.bin file does not exist', assert_raises(RuntimeError) { Rack::Test::UploadedFile.new('data/missing.bin') }.message)

Files

• Gemfile
• NOTES.md
• csx.json
• test/contract.rb

Download the verified artifact (tar.gz) — the exact bytes the contract ran against

Origin Seeder

csx-seed

Verification receipts

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