pytest-exec-core

Core execution engine for an HTTP-triggered pytest runner.

This package provides the building blocks used to launch test suites and process their results:

• Output parsing & summarisation — turn raw pytest console output into a compact pass/fail/skip summary with extracted failure reasons.
• Exception-chain reporting — render every failure's complete exception chain, including each link of a chained traceback, as a diff-formatted report that renders with colour in tools that highlight by file extension.
• Input provisioning — assemble a tar archive of test inputs (plugins, test payloads, environment overrides) and collect output artifacts back out.
• Command assembly — build the pytest command line (xdist workers, plugins, payload file, log file) and resolve a test case path safely.

Install

pip install pytest-exec-core

Usage

from pytest_exec_core import (
    build_summary,
    build_error_report,
    payload_map,
    build_provision_tar,
    collect_artifacts,
    build_cmd,
    resolve_case,
    CasePathError,
)

Summary vs. error report

build_summary answers which tests failed; build_error_report answers why. The latter keeps every E line pytest emitted, so a chained failure such as a TLS handshake timeout surfacing as a read timeout still shows the original cause rather than only the outermost exception.

from pathlib import Path
from pytest_exec_core import build_error_report

report = build_error_report(Path("pytest.out"), labels={"test_login": "Login"})
Path("error.diff").write_text(report)

labels maps a test to a display name; keys may be the full node id, the parametrisation id, or the test file's stem. Omit it to fall back to the payload labels used by build_summary.

License

Proprietary. All rights reserved.