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88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
"""
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Test all things related to the ``jedi.cache`` module.
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"""
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from os import unlink
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import pytest
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from parso.cache import _NodeCacheItem, save_module, load_module, \
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_get_hashed_path, parser_cache, _load_from_file_system, _save_to_file_system
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from parso import load_grammar
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from parso import cache
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@pytest.fixture()
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def isolated_jedi_cache(monkeypatch, tmpdir):
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"""
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Set `jedi.settings.cache_directory` to a temporary directory during test.
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Same as `clean_jedi_cache`, but create the temporary directory for
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each test case (scope='function').
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"""
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monkeypatch.setattr(cache, '_default_cache_path', str(tmpdir))
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def test_modulepickling_change_cache_dir(tmpdir):
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"""
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ParserPickling should not save old cache when cache_directory is changed.
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See: `#168 <https://github.com/davidhalter/jedi/pull/168>`_
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"""
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dir_1 = str(tmpdir.mkdir('first'))
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dir_2 = str(tmpdir.mkdir('second'))
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item_1 = _NodeCacheItem('bla', [])
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item_2 = _NodeCacheItem('bla', [])
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path_1 = 'fake path 1'
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path_2 = 'fake path 2'
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hashed_grammar = load_grammar()._hashed
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_save_to_file_system(hashed_grammar, path_1, item_1, cache_path=dir_1)
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parser_cache.clear()
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cached = load_stored_item(hashed_grammar, path_1, item_1, cache_path=dir_1)
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assert cached == item_1.node
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_save_to_file_system(hashed_grammar, path_2, item_2, cache_path=dir_2)
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cached = load_stored_item(hashed_grammar, path_1, item_1, cache_path=dir_2)
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assert cached is None
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def load_stored_item(hashed_grammar, path, item, cache_path):
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"""Load `item` stored at `path` in `cache`."""
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item = _load_from_file_system(hashed_grammar, path, item.change_time - 1, cache_path)
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return item
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@pytest.mark.usefixtures("isolated_jedi_cache")
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def test_modulepickling_simulate_deleted_cache(tmpdir):
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"""
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Tests loading from a cache file after it is deleted.
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According to macOS `dev docs`__,
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Note that the system may delete the Caches/ directory to free up disk
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space, so your app must be able to re-create or download these files as
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needed.
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It is possible that other supported platforms treat cache files the same
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way.
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__ https://developer.apple.com/library/content/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html
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"""
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grammar = load_grammar()
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module = 'fake parser'
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# Create the file
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path = tmpdir.dirname + '/some_path'
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with open(path, 'w'):
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pass
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save_module(grammar._hashed, path, module, [])
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assert load_module(grammar._hashed, path) == module
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unlink(_get_hashed_path(grammar._hashed, path))
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parser_cache.clear()
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cached2 = load_module(grammar._hashed, path)
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assert cached2 is None
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