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noxfile.py
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noxfile.py
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# https://cjolowicz.github.io/posts/hypermodern-python-02-testing/
# https://cjolowicz.github.io/posts/hypermodern-python-03-linting/
import os
from typing import Any
import tempfile
import nox
from nox.sessions import Session
@nox.session(python=["3.6", "3.7", "3.8"])
def tests(session):
"""Run tests."""
session.run("poetry", "install", external=True)
session.run("pytest", "--cov=python_dwd")
@nox.session(python=["3.8"])
def coverage(session: Session) -> None:
"""Run tests and upload coverage data."""
install_with_constraints(session, "coverage[toml]", "codecov")
session.run("coverage", "xml", "--fail-under=0")
session.run("codecov", *session.posargs)
def install_with_constraints(
session: Session, *args: str, **kwargs: Any
) -> None:
"""
Install packages constrained by Poetry's lock file.
This function is a wrapper for nox.sessions.Session.install. It
invokes pip to install packages inside of the session's virtualenv.
Additionally, pip is passed a constraints file generated from
Poetry's lock file, to ensure that the packages are pinned to the
versions specified in poetry.lock. This allows you to manage the
packages as Poetry development dependencies.
Arguments:
session: The Session object.
args: Command-line arguments for pip.
kwargs: Additional keyword arguments for Session.install.
"""
req_path = os.path.join(tempfile.gettempdir(), os.urandom(24).hex())
session.run(
"poetry",
"export",
"--dev",
"--format=requirements.txt",
"--without-hashes",
f"--output={req_path}",
external=True,
)
session.install(f"--constraint={req_path}", *args, **kwargs)
os.unlink(req_path)