summaryrefslogtreecommitdiffstats
path: root/tests/store_test.py
blob: ff671a83d0e2b061ba07a2614647d0239d553ac2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
from __future__ import annotations

import os.path
import sqlite3
import stat
from unittest import mock

import pytest

from pre_commit import git
from pre_commit.store import _get_default_directory
from pre_commit.store import Store
from pre_commit.util import CalledProcessError
from pre_commit.util import cmd_output
from testing.fixtures import git_dir
from testing.util import cwd
from testing.util import git_commit
from testing.util import xfailif_windows


def test_our_session_fixture_works():
    """There's a session fixture which makes `Store` invariantly raise to
    prevent writing to the home directory.
    """
    with pytest.raises(AssertionError):
        Store()


def test_get_default_directory_defaults_to_home():
    # Not we use the module level one which is not mocked
    ret = _get_default_directory()
    expected = os.path.realpath(os.path.expanduser('~/.cache/pre-commit'))
    assert ret == expected


def test_adheres_to_xdg_specification():
    with mock.patch.dict(
        os.environ, {'XDG_CACHE_HOME': '/tmp/fakehome'},
    ):
        ret = _get_default_directory()
    expected = os.path.realpath('/tmp/fakehome/pre-commit')
    assert ret == expected


def test_uses_environment_variable_when_present():
    with mock.patch.dict(
        os.environ, {'PRE_COMMIT_HOME': '/tmp/pre_commit_home'},
    ):
        ret = _get_default_directory()
    expected = os.path.realpath('/tmp/pre_commit_home')
    assert ret == expected


def test_store_init(store):
    # Should create the store directory
    assert os.path.exists(store.directory)
    # Should create a README file indicating what the directory is about
    with open(os.path.join(store.directory, 'README')) as readme_file:
        readme_contents = readme_file.read()
        for text_line in (
            'This directory is maintained by the pre-commit project.',
            'Learn more: https://github.com/pre-commit/pre-commit',
        ):
            assert text_line in readme_contents


def test_clone(store, tempdir_factory, log_info_mock):
    path = git_dir(tempdir_factory)
    with cwd(path):
        git_commit()
        rev = git.head_rev(path)
        git_commit()

    ret = store.clone(path, rev)
    # Should have printed some stuff
    assert log_info_mock.call_args_list[0][0][0].startswith(
        'Initializing environment for ',
    )

    # Should return a directory inside of the store
    assert os.path.exists(ret)
    assert ret.startswith(store.directory)
    # Directory should start with `repo`
    _, dirname = os.path.split(ret)
    assert dirname.startswith('repo')
    # Should be checked out to the rev we specified
    assert git.head_rev(ret) == rev

    # Assert there's an entry in the sqlite db for this
    assert store.select_all_repos() == [(path, rev, ret)]


def test_clone_cleans_up_on_checkout_failure(store):
    with pytest.raises(Exception) as excinfo:
        # This raises an exception because you can't clone something that
        # doesn't exist!
        store.clone('/i_dont_exist_lol', 'fake_rev')
    assert '/i_dont_exist_lol' in str(excinfo.value)

    repo_dirs = [
        d for d in os.listdir(store.directory) if d.startswith('repo')
    ]
    assert repo_dirs == []


def test_clone_when_repo_already_exists(store):
    # Create an entry in the sqlite db that makes it look like the repo has
    # been cloned.
    with sqlite3.connect(store.db_path) as db:
        db.execute(
            'INSERT INTO repos (repo, ref, path) '
            'VALUES ("fake_repo", "fake_ref", "fake_path")',
        )

    assert store.clone('fake_repo', 'fake_ref') == 'fake_path'


def test_clone_shallow_failure_fallback_to_complete(
    store, tempdir_factory,
    log_info_mock,
):
    path = git_dir(tempdir_factory)
    with cwd(path):
        git_commit()
        rev = git.head_rev(path)
        git_commit()

    # Force shallow clone failure
    def fake_shallow_clone(self, *args, **kwargs):
        raise CalledProcessError(1, (), 0, b'', None)
    store._shallow_clone = fake_shallow_clone

    ret = store.clone(path, rev)

    # Should have printed some stuff
    assert log_info_mock.call_args_list[0][0][0].startswith(
        'Initializing environment for ',
    )

    # Should return a directory inside of the store
    assert os.path.exists(ret)
    assert ret.startswith(store.directory)
    # Directory should start with `repo`
    _, dirname = os.path.split(ret)
    assert dirname.startswith('repo')
    # Should be checked out to the rev we specified
    assert git.head_rev(ret) == rev

    # Assert there's an entry in the sqlite db for this
    assert store.select_all_repos() == [(path, rev, ret)]


def test_clone_tag_not_on_mainline(store, tempdir_factory):
    path = git_dir(tempdir_factory)
    with cwd(path):
        git_commit()
        cmd_output('git', 'checkout', 'master', '-b', 'branch')
        git_commit()
        cmd_output('git', 'tag', 'v1')
        cmd_output('git', 'checkout', 'master')
        cmd_output('git', 'branch', '-D', 'branch')

    # previously crashed on unreachable refs
    store.clone(path, 'v1')


def test_create_when_directory_exists_but_not_db(store):
    # In versions <= 0.3.5, there was no sqlite db causing a need for
    # backward compatibility
    os.remove(store.db_path)
    store = Store(store.directory)
    assert os.path.exists(store.db_path)


def test_create_when_store_already_exists(store):
    # an assertion that this is idempotent and does not crash
    Store(store.directory)


def test_db_repo_name(store):
    assert store.db_repo_name('repo', ()) == 'repo'
    assert store.db_repo_name('repo', ('b', 'a', 'c')) == 'repo:a,b,c'


def test_local_resources_reflects_reality():
    on_disk = {
        res[len('empty_template_'):]
        for res in os.listdir('pre_commit/resources')
        if res.startswith('empty_template_')
    }
    assert on_disk == {os.path.basename(x) for x in Store.LOCAL_RESOURCES}


def test_mark_config_as_used(store, tmpdir):
    with tmpdir.as_cwd():
        f = tmpdir.join('f').ensure()
        store.mark_config_used('f')
        assert store.select_all_configs() == [f.strpath]


def test_mark_config_as_used_idempotent(store, tmpdir):
    test_mark_config_as_used(store, tmpdir)
    test_mark_config_as_used(store, tmpdir)


def test_mark_config_as_used_does_not_exist(store):
    store.mark_config_used('f')
    assert store.select_all_configs() == []


def _simulate_pre_1_14_0(store):
    with store.connect() as db:
        db.executescript('DROP TABLE configs')


def test_select_all_configs_roll_forward(store):
    _simulate_pre_1_14_0(store)
    assert store.select_all_configs() == []


def test_mark_config_as_used_roll_forward(store, tmpdir):
    _simulate_pre_1_14_0(store)
    test_mark_config_as_used(store, tmpdir)


@xfailif_windows  # pragma: win32 no cover
def test_mark_config_as_used_readonly(tmpdir):
    cfg = tmpdir.join('f').ensure()
    store_dir = tmpdir.join('store')
    # make a store, then we'll convert its directory to be readonly
    assert not Store(str(store_dir)).readonly  # directory didn't exist
    assert not Store(str(store_dir)).readonly  # directory did exist

    def _chmod_minus_w(p):
        st = os.stat(p)
        os.chmod(p, st.st_mode & ~(stat.S_IWUSR | stat.S_IWOTH | stat.S_IWGRP))

    _chmod_minus_w(store_dir)
    for fname in os.listdir(store_dir):
        assert not os.path.isdir(fname)
        _chmod_minus_w(os.path.join(store_dir, fname))

    store = Store(str(store_dir))
    assert store.readonly
    # should be skipped due to readonly
    store.mark_config_used(str(cfg))
    assert store.select_all_configs() == []