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fix: weekly not working correctly at start of year #35

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fix: weekly not working correctly at start of year #35

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003569e
test: test_weekly_rotation
piotrekfilip Mar 15, 2022
e59dd1c
fix: weekly not working correctly at start of year
piotrekfilip Mar 15, 2022
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7 changes: 6 additions & 1 deletion rotate_backups/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -986,7 +986,12 @@ def timestamp(self):
@property
def week(self):
"""The ISO week number of :attr:`timestamp` (a number)."""
return self.timestamp.isocalendar()[1]
# for some days close to January 1, isocalendar()[1] may return the week number as 52 or 53
# eg: date(2022, 1, 1).isocalendar() returns (2021, 52, 6)
if self.year == self.timestamp.isocalendar()[0] + 1:
return 0
else:
return self.timestamp.isocalendar()[1]

def __getattr__(self, name):
"""Defer attribute access to :attr:`timestamp`."""
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17 changes: 17 additions & 0 deletions rotate_backups/tests.py
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Original file line number Diff line number Diff line change
Expand Up @@ -387,6 +387,23 @@ def test_minutely_rotation(self):
assert os.path.exists(os.path.join(root, 'backup-2016-01-10_21-30-00'))
assert os.path.exists(os.path.join(root, 'backup-2016-01-10_21-45-00'))

def test_weekly_rotation(self):
"""Test weekly rotation."""
with TemporaryDirectory(prefix='rotate-backups-', suffix='-test-suite') as root:
os.mkdir(os.path.join(root, 'galera_backup_db4.sl.example.lab_2020-12-26_10-00'))
os.mkdir(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-02_10-00'))
os.mkdir(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-09_10-00'))
os.mkdir(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-16_10-00'))
os.mkdir(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-23_10-00'))
os.mkdir(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-30_10-00'))
run_cli(main, '--weekly=4', root)
assert os.path.exists(os.path.join(root, 'galera_backup_db4.sl.example.lab_2020-12-26_10-00')) is False
assert os.path.exists(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-02_10-00')) is False
assert os.path.exists(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-09_10-00'))
assert os.path.exists(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-16_10-00'))
assert os.path.exists(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-23_10-00'))
assert os.path.exists(os.path.join(root, 'galera_backup_db4.sl.example.lab_2021-01-30_10-00'))

def test_removal_command(self):
"""Test that the removal command can be customized."""
with TemporaryDirectory(prefix='rotate-backups-', suffix='-test-suite') as root:
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