Sample
sinatra 4.2.1: Configure Sinatra application settings, Hash option merging, dynamic Proc evaluation, method override tunneling, and environment variable resolution without swallowed options or callable argument errors
Verified sample for gem sinatra 4.2.1: Configure Sinatra application settings, Hash option merging, dynamic Proc evaluation, method override tunneling, and…
sha256:5e9ddf97d864052fc422fb182fa2b8a3153312906c32895d2b1885072700c195
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MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
ruby linux x64 ruby ruby bundler
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| ruby 3 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-16 |
| ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-18 |
Case
HOW- Goal
- Configure Sinatra application settings, Hash option merging, dynamic Proc evaluation, method override tunneling, and environment variable resolution without swallowed options or callable argument errors
- Symbols
-
- Sinatra::Base.set
- Sinatra::Base.enable
- Sinatra::Base.settings
- Sinatra::Base.environment
- Sinatra::Base.method_override
- Environment
- ruby
- Created
- 2026-08-16T16:57:30Z
Contract
- Sinatra::Base.set merges new Hash options into previous Hash settings rather than overwriting them, and evaluates Proc or lambda settings on every property access rather than returning the callable object.
- assert storing a parameterized lambda directly via set fails with ArgumentError on access unless wrapped in a proc returning the lambda
- assert zero-arity proc settings execute dynamically on every settings access, returning fresh values
- assert Sinatra::Base defaults method_override to false, ignoring _method form parameters unless enable :method_override is set
- assert Sinatra::Base captures environment at load time, ignoring post-require ENV['RACK_ENV'] mutations unless explicitly reconfigured with set :environment
- assert development environment enables host_authorization by default, returning 403 Forbidden for non-localhost Host headers
Files
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- src/app.rb
- test/contract.rb