Sample
req 0.7.2: Compose request URLs, path parameters, query params, and body steps in Req without network side effects
Verified sample for hex req 0.7.2: Compose request URLs, path parameters, query params, and body steps in Req without network side effects. The contract ran…
sha256:44ed518e27a03b5bcb2248c4e2644a12adf18d5288dd063d62acf4e74a458ee0
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
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
elixir linux x64 elixir elixir mix
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| elixir 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · hex@1 |
2026-08-17 |
| elixir 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · hex@1 |
2026-08-18 |
Case
HOW- Goal
- Compose request URLs, path parameters, query params, and body steps in Req without network side effects
- Packages
- Symbols
-
- Req.new
- Req.Request.register_options
- Req.Request.put_option
- Req.Request.run_request
- Req.Steps.put_base_url
- Req.Steps.encode_body
- Req.Steps.put_path_params
- Req.Steps.put_params
- Environment
- elixir
- Created
- 2026-08-17T04:45:26Z
Contract
- assert Req.Steps.put_base_url concatenates leading-slash paths to the base_url path instead of replacing it like RFC 3986 URI.merge
- assert put_base_url evaluates dynamic 0-arity base_url functions and ignores base_url entirely when the request URL has an explicit scheme
- assert Req.Steps.encode_body automatically changes request method from :get to :post when body, json, or form is set, but preserves explicit methods like :put
- assert Req.Steps.put_path_params URI-encodes values in :colon template style, preserves known unmapped placeholders literally, and raises on uninterned placeholders
- assert Req.Steps.put_params decodes existing URL query strings and updates matched keys in place via keystore rather than appending duplicate keys
- assert Req validates options against registered keys raising ArgumentError on unregistered options, and a request step returning {req, resp} short-circuits the pipeline
Files
- NOTES.md
- csx.json
- mix.exs
- mix.lock
- test/contract_test.exs
- test/test_helper.exs