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"""Report native coverage when the optional backend is installed."""

from collections import Counter

import json

from pathlib import Path

import pytest

from git import _backend

def pytest_addoption(parser):

parser.addoption("--backend-report", help="Write native/CLI operation counts as JSON")

parser.addoption("--max-cli-processes", type=int, help="Maximum Git.execute launches in the pytest session")

parser.addoption("--max-cli-test-processes", type=int, help="Maximum Git.execute launches in test call phases")

def cli_processes():

return _backend.statistics().get(("Git.execute", "CLI process"), 0)

def pytest_configure(config):

for option in ("--max-cli-processes", "--max-cli-test-processes"):

limit = config.getoption(option)

if limit is not None and limit < 0:

raise pytest.UsageError(option + " must be nonnegative")

config._cli_process_start = cli_processes()

config._cli_process_phases = Counter()

@pytest.hookimpl(hookwrapper=True)

def pytest_runtest_setup(item):

before = cli_processes()

yield

item.config._cli_process_phases["setup"] += cli_processes() - before

@pytest.hookimpl(hookwrapper=True)

def pytest_runtest_call(item):

before = cli_processes()

yield

item.config._cli_process_phases["call"] += cli_processes() - before

@pytest.hookimpl(hookwrapper=True)

def pytest_runtest_teardown(item):

before = cli_processes()

yield

item.config._cli_process_phases["teardown"] += cli_processes() - before

def pytest_sessionfinish(session, exitstatus):

config = session.config

actual = {

"--max-cli-processes": cli_processes() - config._cli_process_start,

"--max-cli-test-processes": config._cli_process_phases["call"],

}

config._cli_process_failures = [

f"{option}: {count} launches exceed ceiling {config.getoption(option)}"

for option, count in actual.items()

if config.getoption(option) is not None and count > config.getoption(option)

]

if config._cli_process_failures:

session.exitstatus = pytest.ExitCode.TESTS_FAILED

def pytest_report_header(config):

return "GitPython backend: " + _backend.name

def pytest_terminal_summary(terminalreporter, exitstatus, config):

total = cli_processes() - config._cli_process_start

phases = config._cli_process_phases

terminalreporter.section("Git CLI process launches")

terminalreporter.write_line(

f"{total} total: {phases['setup']} setup, {phases['call']} call, "

f"{phases['teardown']} teardown, {total - sum(phases.values())} collection/session"

)

for failure in config._cli_process_failures:

terminalreporter.write_line(failure, red=True)

records = [

{"method": method, "outcome": outcome, "count": count}

for (method, outcome), count in sorted(_backend.statistics().items())

]

if _backend.name == "gix":

terminalreporter.section("GixPython operation coverage")

for item in records:

terminalreporter.write_line("{method}: {outcome} ({count})".format(**item))

records.extend(

{"method": "pytest." + phase, "outcome": "CLI process", "count": count}

for phase, count in sorted({**phases, "session_total": total}.items())

)

path = config.getoption("--backend-report")

if path:

Path(path).parent.mkdir(parents=True, exist_ok=True)

with open(path, "w", encoding="utf-8") as stream:

json.dump(records, stream, indent=2)

stream.write("\n")