Use pyfakefs for TestSqliteAccountProfileFileLocation

Author: agoncharov-reef

noxfile.py

@@ -30,6 +30,7 @@
     "pytest-cov==3.0.0",
     "pytest-mock==3.6.1",
     'pytest-lazy-fixture==0.6.3',
+    'pyfakefs==4.5.6',
 ]
 REQUIREMENTS_BUILD = ['setuptools>=20.2']
 
@@ -107,7 +108,7 @@ def unit(session):
     """Run unit tests."""
     install_myself(session)
     session.install(*REQUIREMENTS_TEST)
-    args = ['--doctest-modules']
+    args = ['--doctest-modules', '-p', 'pyfakefs']
     if not SKIP_COVERAGE:
         args += ['--cov=b2sdk', '--cov-branch', '--cov-report=xml']
     # TODO: Use session.parametrize for apiver

test/unit/account_info/test_sqlite_account_info.py

@@ -68,11 +68,9 @@ def test_migrate_to_4(self):
 
 class TestSqliteAccountProfileFileLocation:
     @pytest.fixture(autouse=True)
-    def setup(self, monkeypatch):
+    def setup(self, monkeypatch, fs):
         monkeypatch.delenv(B2_ACCOUNT_INFO_ENV_VAR, raising=False)
         monkeypatch.delenv(XDG_CONFIG_HOME_ENV_VAR, raising=False)
-        if os.path.exists(os.path.expanduser(B2_ACCOUNT_INFO_DEFAULT_FILE)):
-            os.remove(os.path.expanduser(B2_ACCOUNT_INFO_DEFAULT_FILE))
 
     def test_invalid_profile_name(self):
         with pytest.raises(ValueError):
@@ -112,7 +110,10 @@ def test_env_var(self, monkeypatch):
     def test_default_file_if_exists(self, monkeypatch):
         # ensure that XDG_CONFIG_HOME_ENV_VAR doesn't matter if default file exists
         monkeypatch.setenv(XDG_CONFIG_HOME_ENV_VAR, 'some')
-        with open(os.path.expanduser(B2_ACCOUNT_INFO_DEFAULT_FILE), 'w') as account_file:
+        account_file_path = os.path.expanduser(B2_ACCOUNT_INFO_DEFAULT_FILE)
+        parent_dir = os.path.abspath(os.path.join(account_file_path, os.pardir))
+        os.makedirs(parent_dir, exist_ok=True)
+        with open(account_file_path, 'w') as account_file:
             account_file.write('')
         account_info_path = SqliteAccountInfo._get_user_account_info_path()
         assert account_info_path == os.path.expanduser(B2_ACCOUNT_INFO_DEFAULT_FILE)