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"""Configs for pytest."""
import gc
import json
import os
import sys
from typing import Generator
import pytest
import pynvim
pynvim.setup_logging("test")
@pytest.fixture
def vim() -> Generator[pynvim.Nvim, None, None]:
"""Create an embedded, sub-process Nvim fixture instance."""
editor: pynvim.Nvim
child_argv = os.environ.get('NVIM_CHILD_ARGV')
listen_address = os.environ.get('NVIM')
if child_argv is None and listen_address is None:
child_argv = json.dumps([
"nvim",
"--clean", # no config and plugins (-u NONE), no SHADA
"-n", # no swap file
"--embed",
"--headless",
# Always use the same exact python executable regardless of $PATH
"--cmd", f"let g:python3_host_prog='{sys.executable}'",
])
if child_argv is not None:
editor = pynvim.attach('child', argv=json.loads(child_argv))
else:
assert listen_address is not None and listen_address != ''
editor = pynvim.attach('socket', path=listen_address)
try:
yield editor
finally:
# Ensure all internal resources (pipes, transports, etc.) are always
# closed properly. Otherwise, during GC finalizers (__del__) will raise
# "Event loop is closed" error.
editor.close()
gc.collect() # force-run GC, to early-detect potential leakages
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