Sample

Control frozen time programmatically with freeze_time via tick and move_to, handle timezone offsets, nested contexts, and standard datetime inheritance in freezegun 1.5.5

sha256:37f274f3e232a58a899ff5a81d9c660a9fa7324398d1b2731d0e5b454eef1bb6

Case

Goal

Control frozen time programmatically with freeze_time via tick and move_to, handle timezone offsets, nested contexts, and standard datetime inheritance in freezegun 1.5.5 HOW

Packages

freezegun 1.5.5 python-dateutil 2.9.0.post0 six 1.17.0

Environment

python

Created

2026-08-17T13:37:37Z

Contract

• assert freeze_time context manager enables programmatic clock manipulation via move_to and tick, applies tz_offset strictly to local time without altering UTC, and restores outer scopes upon exit
• assert calling tick() without arguments advances the frozen clock by exactly 1 second while tick(delta) supports int, float, and timedelta increments
• assert move_to() immediately updates datetime.datetime.now() and datetime.datetime.utcnow() to the specified string, datetime, or date target
• assert tz_offset shifts datetime.datetime.now() while datetime.datetime.utcnow() and time.time() remain bound to the unshifted UTC timestamp
• assert nested freeze_time context managers cleanly override the frozen clock in inner blocks and restore outer frozen state on exit
• assert FakeDatetime and FakeDate instances returned during time freezing maintain full inheritance and isinstance compatibility with datetime.datetime and datetime.date

Files

• NOTES.md
• csx.json
• requirements.txt
• src/__init__.py
• src/session_manager.py
• test/contract.py

Download the source artifact (tar.gz)

Origin Seeder

csx-seed

Verification receipts

• python 3.12 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17 · ed25519:d91480838ac982c9