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JournalLock: Implement update_lock() test.

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* This uses a separate mock_journaldir_changing() that returns a new
  tmpdir on each invocation of config.get_str('journaldir').
This commit is contained in:
Athanasius 2021-03-24 16:14:49 +00:00
parent 0c9b841e80
commit 8c74d46368
1 changed files with 38 additions and 3 deletions
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41
tests/journal_lock.py/test_journal_lock.py
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@ -99,9 +99,6 @@ class TestJournalLock:
@pytest.fixture @pytest.fixture
def mock_journaldir(self, monkeypatch: _pytest_monkeypatch, tmpdir: _pytest_tmpdir) -> py_path_local_LocalPath: def mock_journaldir(self, monkeypatch: _pytest_monkeypatch, tmpdir: _pytest_tmpdir) -> py_path_local_LocalPath:
"""Fixture for mocking config.get_str('journaldir').""" """Fixture for mocking config.get_str('journaldir')."""
# Force the directory to pre-defined for testing making !Write
# tmpdir = pathlib.Path(r'C:\Users\Athan\AppData\Local\Temp\rotest')
def get_str(key: str, *, default: str = None) -> str: def get_str(key: str, *, default: str = None) -> str:
"""Mock config.*Config get_str to provide fake journaldir.""" """Mock config.*Config get_str to provide fake journaldir."""
if key == 'journaldir': if key == 'journaldir':
@ -114,6 +111,24 @@ class TestJournalLock:
m.setattr(config, "get_str", get_str) m.setattr(config, "get_str", get_str)
yield tmpdir yield tmpdir
@pytest.fixture
def mock_journaldir_changing(
self,
monkeypatch: _pytest_monkeypatch,
tmpdir_factory: _pytest_tmpdir.TempdirFactory) -> py_path_local_LocalPath:
"""Fixture for mocking config.get_str('journaldir')."""
def get_str(key: str, *, default: str = None) -> str:
"""Mock config.*Config get_str to provide fake journaldir."""
if key == 'journaldir':
return tmpdir_factory.mktemp()
print('Other key, calling up ...')
return config.get_str(key) # Call the non-mocked
with monkeypatch.context() as m:
m.setattr(config, "get_str", get_str)
yield tmpdir_factory
########################################################################### ###########################################################################
# Tests against JournalLock.__init__() # Tests against JournalLock.__init__()
def test_journal_lock_init(self, mock_journaldir: py_path_local_LocalPath): def test_journal_lock_init(self, mock_journaldir: py_path_local_LocalPath):
@ -280,3 +295,23 @@ class TestJournalLock:
########################################################################### ###########################################################################
# Tests against JournalLock.update_lock() # Tests against JournalLock.update_lock()
def test_update_lock(self, mock_journaldir_changing: py_path_local_LocalPath):
"""
Test JournalLock.update_lock().
NB: This uses mock_journaldir_changing so that each subsequent call
to config.get_str('journaldir') gets a new, unique, path.
This should mean that the call to update_lock() switches to a new
journaldir.
"""
# First actually obtain the lock, and check it worked
jlock = JournalLock()
jlock.obtain_lock()
assert jlock.locked is True
# Now store the 'current' journaldir for reference and attempt
# to update to a new one.
old_journaldir = jlock.journal_dir
jlock.update_lock()
assert jlock.journaldir != old_journaldir
assert jlock.locked is True