import os
import pytest
from solidlsp import SolidLanguageServer
from solidlsp.ls_config import Language
class TestLanguageServerCommonFunctionality:
"""Test common functionality of SolidLanguageServer base implementation (not language-specific behaviour)."""
@pytest.mark.parametrize("language_server", [Language.PYTHON], indirect=True)
def test_open_file_cache_invalidate(self, language_server: SolidLanguageServer) -> None:
"""
Tests that the file buffer cache is invalidated when the file is changed on disk.
"""
file_path = os.path.join(language_server.repository_root_path, "test_open_file.py")
test_string1 = "# foo"
test_string2 = "# bar"
with open(file_path, "w") as f:
f.write(test_string1)
try:
with language_server.open_file(file_path) as fb:
assert fb.contents == test_string1
# apply external change to file
with open(file_path, "w") as f:
f.write(test_string2)
# Explicitly bump mtime into the future so the cache sees a change.
# Relying on natural mtime advancement is flaky because many filesystems
# (ext4, tmpfs) have only 1-second mtime granularity, and both writes
# can land in the same second.
stat = os.stat(file_path)
os.utime(file_path, (stat.st_atime, stat.st_mtime + 2))
# check that the file buffer has been invalidated and reloaded
assert fb.contents == test_string2
finally:
os.remove(file_path)
