Merge pull request #533 from ashishnitinpatil/fix_350

Add move_to to TickingDateTimeFactory

AUTHORS.rst

@@ -21,3 +21,4 @@ Patches and Suggestions
 - `Hannes Ljungberg <[email protected]>`_
 - `staticdev <[email protected]>`_
 - `Marcin Sulikowski <https://github.com/marcinsulikowski>`_
+- `Ashish Patil <https://github.com/ashishnitinpatil>`_

freezegun/api.py

@@ -493,6 +493,11 @@ def __init__(self, time_to_freeze, start):
     def __call__(self):
         return self.time_to_freeze + (real_datetime.now() - self.start)
 
+    def move_to(self, target_datetime):
+        """Moves frozen date to the given ``target_datetime``"""
+        self.start = real_datetime.now()
+        self.time_to_freeze = _parse_time_to_freeze(target_datetime)
+
 
 class FrozenDateTimeFactory:
 

tests/test_ticking.py

@@ -63,6 +63,14 @@ def test_ticking_time():
         assert time.time() > 1326585599.0
 
 
+@utils.cpython_only
+def test_ticking_move_to():
+    with freeze_time("Jan 14th, 2012, 23:59:59", tick=True) as ft:
+        ft.move_to("Jan 15th, 2012, 00:59:59.999999")
+        time.sleep(0.001)  # Deal with potential clock resolution problems
+        assert datetime.datetime.now().replace(second=0, microsecond=0) == datetime.datetime(2012, 1, 15, 1, 0, 0)
+
+
 @utils.cpython_only_mark
 @pytest.mark.parametrize("func_name",
     ("monotonic", "monotonic_ns", "perf_counter", "perf_counter_ns"),