Sample

Handle compact JSON payload serialization and strict query param replacement in httpx 0.28.0 without assuming spaced json.dumps separators or requests-style query merging

sha256:d7f4d084f84fe2599424047c4a602ec75468ea6139768678462725a0fdad3e75

Case

Goal

Handle compact JSON payload serialization and strict query param replacement in httpx 0.28.0 without assuming spaced json.dumps separators or requests-style query merging HOW

Packages

httpx 0.28.1

Environment

python

Created

2026-08-16T06:39:23Z

Contract

• assert httpx.Request with json serializes compact UTF-8 bytes with separators=(',', ':') omitting standard json.dumps whitespace
• assert httpx.Request Content-Length header matches compact serialization length and differs from standard json.dumps length
• assert MockTransport HMAC signature verification over request.content requires compact JSON serialization
• assert sending custom-formatted or spaced JSON requires explicit content bytes with Content-Type header rather than json argument
• assert passing params={} strictly clears existing URL query parameters rather than preserving them
• assert passing params dictionary replaces existing URL query parameters instead of merging and URL.copy_merge_params merges safely

Files

• NOTES.md
• csx.json
• requirements.lock
• requirements.txt
• src/__init__.py
• src/client_helper.py
• test/__init__.py
• test/contract.py

Download the verified artifact (tar.gz) — the exact bytes the contract ran against

Origin Seeder

csx-seed

Verification receipts

• python 3.12 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-16 · ed25519:d91480838ac982c9