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req 0.7.2: Stub HTTP responses for Elixir code that uses Req, with no network, no fake server process and no mocking library

검증된 샘플 — hex req 0.7.2: Stub HTTP responses for Elixir code that uses Req, with no network, no fake server process and no mocking library. elixir 1 · linux…

sha256:1a5be8dc134928a8238887f9504e70f60f67fb5fa956fd3fc577d86784ecfa1d

이 네트워크가 제공하는 것은 하나입니다. 빌드되는 샘플. 샌드박스에서 돌리고 서명된 영수증을 보관합니다. 등급을 매기지 않고 무엇도 보증하지 않습니다 — 같은 코드가 당신 환경에서 빌드되는지는 측정한 적이 없습니다. 통과한 계약 영수증을 낸 서로 다른 서명 키의 수입니다. 하나면 작성자 혼자이고, 둘 이상이면 다른 사람도 빌드했다는 뜻입니다. 키는 스스로 만드는 것이고 뒤에 등록된 신원이 없으므로, 세는 것은 사람이 아니라 키입니다. MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

증거 기준
서명된 컨트랙트 통과
검증 영수증
1
빌드한 서명 키
1
선언된 환경 elixir 1 linux x64 elixir 1 elixir mix

검증 실행 환경

환경 컨트랙트 단계 실행일
elixir 1 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243 PASS compile:PASS · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · hex@1
2026-08-14

케이스

HOW
목표
Stub HTTP responses for Elixir code that uses Req, with no network, no fake server process and no mocking library
패키지
심벌
  • Req.Test.stub
  • Req.Test.expect
  • Req.Test.verify!
  • Req.Test.json
  • Req.Test.transport_error
  • Req.Plug
  • Req.Steps.decode_body
  • Req.Steps.retry
  • Req.Steps.handle_http_errors
  • Req.request!
  • Req.TransportError
  • Plug.Conn.send_resp
환경
elixir 1
생성일
2026-08-14T20:15:02Z

컨트랙트

  1. assert the response content-type is what decodes the body, so a stub built with Req.Test.json hands the caller a map and no .json() accessor is called anywhere, and that headers are a map of lists where a missing header reads as nil
  2. assert the same JSON bytes sent with Plug.Conn.send_resp and no content-type stay a binary, so a clean HTTP 200 stops matching the caller's %{"celsius" => _} clause
  3. assert that with no content-type the request URL path decides instead: /data.json is decoded while /data and /data.txt are not, because decode_body falls back to application/octet-stream and resolves that through MIME.from_path
  4. assert an HTTP 500 is {:ok, response} and raises from neither Req.request/1 nor Req.request!/1, that the error body is decoded like any other body, and that http_errors: :raise reports the body still undecoded because handle_http_errors runs ahead of decode_body
  5. assert retry is on by default: one 500 on GET calls the stub four times (the initial request plus max_retries 3), the same 500 on POST calls it once because :safe_transient covers GET and HEAD only, and retry: :transient opts POST in
  6. assert Req.Test.transport_error produces {:error, %Req.TransportError{}} rather than a response, which a queue of canned responses cannot express, and that Req.get! raises it
  7. assert expectations are consumed in order ahead of a stub whatever the registration order, and that once drained Req.Test falls through to the stub instead of failing
  8. assert an exhausted expectation with no stub raises "no mock or stub for X" while a name never registered raises the different "cannot find mock/stub X in process #PID<...>"
  9. assert an unmet expectation fails nothing until Req.Test.verify! is called, and that verify! then names how many more uses were expected
  10. assert JSON decoding is switched off by decode_body: false, decoders: false or raw: true, that :decoders replaces the default [:json, :json_api] rather than extending it, and that a codec under :decoders is the 0.7.0 replacement for the deprecated :decode_json
  11. assert Req.Test implements the Plug behaviour and the stub name is literally that plug's options, so a bare function plug stubs HTTP with no registry at all

파일

  • csx.json
  • lib/csx_req/weather.ex
  • mix.exs
  • mix.lock
  • test/contract_test.exs
  • test/test_helper.exs

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