CodeSampleX

Sample

verify django.test.Client in pkg:pypi/Django@6.1

sha256:9291aa6bd02d381d8376bbef1194f4c2fde1f4c07d5d4c0fd0adaea20262b4be

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
3
Verification level
L4_CROSS_PASS
Declared environment python 3.12 linux x64 python 3.12 python pip

Verification-run environments

Environment Contract Stages Run
python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 SKIPPED compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL
CONTAINER_RUN · python@1
2026-08-19
python 3.12 · linux alpine/x64 · docker ed25519:c1973797be207ac4 SKIPPED compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL
CONTAINER_RUN · python@1
2026-08-20
python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · python@1
2026-08-20

Case

HOW
Goal
verify django.test.Client in pkg:pypi/Django@6.1
Packages
Symbols
  • django.test.Client
  • django.test.RequestFactory
  • django.http.JsonResponse
  • django.urls.path
Environment
python 3.12
Created
2026-08-18T13:43:05Z

Contract

  1. assert JsonResponse accepts a dict by default, sets application/json, uses ordinary json.dumps spacing, and ASCII-escapes Unicode with its default encoder
  2. assert JsonResponse rejects a list while safe=True and serializes it when safe=False
  3. assert RequestFactory only builds a request: direct view invocation has no resolver match, path conversion, middleware marker, response header, or .json helper
  4. assert Client resolves django.urls.path, converts an <int:item_id> segment to int, runs middleware, records resolver_match, and returns 404 when the converter does not match
  5. assert json_dumps_params controls key order, separators, and Unicode escaping in the exact response bytes
  6. assert Client response.json parses JSON responses but refuses text/plain based on the Content-Type header

Files

  • PROMPT.md
  • csx.json
  • requirements.txt
  • spec.json
  • src/app.py
  • test/contract.py

Download the source artifact (tar.gz)

Origin Seeder

anonymous