httpcore 1.0.9: URL, Request, Response

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:pypi/httpcore@1.0.9
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:pypi/httpcore@1.0.9

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:52a04bc2a208345202650cd7c30c19d9f0107a5c3f2259fa457c0bfebd95255e","contract":["assert httpcore.URL parses scheme, host, port, and target path components correctly","assert httpcore.Request creates an HTTP request with method, target URL, and body stream","assert httpcore.Response exposes status code, headers, and reads byte stream content","assert httpcore.ConnectionPool executes HTTP requests using httpcore.MockBackend offline","assert httpcore.ConnectError inherits from httpcore.NetworkError and Exception"],"goal":"verify pkg:pypi/httpcore@1.0.9","kind":"HOW","packages":["pkg:pypi/httpcore@1.0.9"],"schemaVersion":1,"symbols":["httpcore.URL","httpcore.Request","httpcore.Response","httpcore.ConnectionPool","httpcore.MockBackend"]},"contractCommand":["python3","test/contract.py"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"pypi","executionContext":"python","language":"python","libc":"glibc","libcVersion":"2.39","moduleSystem":"standard","os":"linux","osVersionBucket":"24","packageManager":"pip","packageManagerVersion":"24.0","runtime":"python","runtimeVersion":"3.12","schemaVersion":1},"license":"MIT-0","packages":["pkg:pypi/httpcore@1.0.9"],"schemaVersion":1,"subject":"pkg:pypi/httpcore@1.0.9","symbols":["httpcore.URL","httpcore.Request","httpcore.Response","httpcore.ConnectionPool","httpcore.MockBackend"],"verifierAdapter":"python@1"}

[project]
name = "verify-httpcore"
version = "0.1.0"
dependencies = [
    "httpcore==1.0.9",
    "certifi",
    "h11",
]

httpcore==1.0.9
certifi
h11

{
  "schemaVersion": 1,
  "goal": "verify pkg:pypi/httpcore@1.0.9",
  "kind": "HOW",
  "packages": [
    "pkg:pypi/httpcore@1.0.9"
  ]
}

import httpcore


def test_url_components():
    url = httpcore.URL("https://example.com:8443/api/v1?query=test")
    assert url.scheme == b"https"
    assert url.host == b"example.com"
    assert url.port == 8443
    assert url.target == b"/api/v1?query=test"


def test_request_creation():
    req = httpcore.Request(
        method="POST",
        url="http://example.com/submit",
        headers=[(b"content-type", b"application/json")],
        content=b'{"key": "val"}',
    )
    assert req.method == b"POST"
    assert req.url.host == b"example.com"
    assert list(req.stream) == [b'{"key": "val"}']


def test_response_reading():
    resp = httpcore.Response(
        status=201,
        headers=[(b"location", b"/items/1")],
        content=b'{"id": 1}',
    )
    assert resp.status == 201
    assert resp.read() == b'{"id": 1}'
    assert resp.content == b'{"id": 1}'


def test_connection_pool_mock_backend():
    mock_backend = httpcore.MockBackend(
        buffer=[
            b"HTTP/1.1 200 OK\r\n",
            b"Content-Type: text/plain\r\n",
            b"Content-Length: 5\r\n",
            b"\r\n",
            b"HELLO",
        ]
    )
    with httpcore.ConnectionPool(network_backend=mock_backend) as pool:
        response = pool.request("GET", "http://example.com/")
        assert response.status == 200
        assert response.read() == b"HELLO"


def test_exception_hierarchy():
    assert issubclass(httpcore.ConnectError, httpcore.NetworkError)
    assert issubclass(httpcore.NetworkError, Exception)
    assert issubclass(httpcore.TimeoutException, Exception)


def main():
    test_url_components()
    test_request_creation()
    test_response_reading()
    test_connection_pool_mock_backend()
    test_exception_hierarchy()
    print("All contract assertions passed.")


if __name__ == "__main__":
    main()