Sample
Measure process ownership, mailbox cleanup, and status-dependent response streaming in Req 0.7.2
sha256:4f8d9d74b976ae9799a5270273c117be48952a696f24a3e9c5d490ccd96161b7
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- elixir 1
- Operating system
- linux
- Architecture
- x64
- Runtime
- elixir 1
- Language
- elixir
- Package manager
- mix
Verification-run environments
- Execution context
- elixir 1
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- elixir 1
- Language
- elixir
- Package manager
- mix
- Execution
- container · docker
CONTAINER_RUN · compile:PASS · contract:PASS · load:PASS · resolve:PASS · hex@1 · 2026-08-17
Case
- Goal
- Measure process ownership, mailbox cleanup, and status-dependent response streaming in Req 0.7.2 HOW
- Packages
-
req 0.7.2
plug 1.20.3
- Environment
- elixir 1
- Created
- 2026-08-17T04:47:12Z
Commonly assumed
An into: :self response body can be enumerated from another process, and a Collectable receives response bytes for every status code.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- assert an into: :self body is a Req.Response.Async tied to the requester pid and enumeration in another process raises RuntimeError
- assert the requester can consume the same three queued chunks after the worker fails
- assert an unconsumed three-chunk stream leaves three data messages and one done message for its ref in the requester mailbox
- assert halting after two chunks drains the remaining messages for that response ref
- assert a File stream receives a tested 200 body but a tested 404 body remains buffered and does not create the file
- assert an into callback receives both chunks from the tested 500 response
Files
- NOTES.md
- csx.json
- mix.exs
- mix.lock
- test/contract.exs
- test/contract_test.exs
- test/test_helper.exs
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- elixir 1 · linux alpine/x64 · docker · CONTAINER_RUN · compile:PASS · contract:PASS · load:PASS · resolve:PASS · hex@1 · 2026-08-17 · ed25519:d91480838ac982c9