hiro


Namehiro JSON
Version 1.1.1 PyPI version JSON
download
home_pagehttp://hiro.readthedocs.org
Summarytime manipulation utilities for testing in python
upload_time2023-01-11 18:53:07
maintainer
docs_urlNone
authorAli-Akber Saifee
requires_python
licenseMIT
keywords
VCS
bugtrack_url
requirements No requirements were recorded.
Travis-CI No Travis.
coveralls test coverage No coveralls.
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    :target: https://pypi.python.org/pypi/hiro
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    :target: https://pypi.python.org/pypi/hiro
.. |docs| image:: https://readthedocs.org/projects/hiro/badge
    :target: https://hiro.readthedocs.org


********************************************************
Hiro - time manipulation utilities for testing in python
********************************************************
|ci| |coveralls| |pypi| |docs| |license|

   Yatta!

   -- Hiro Nakamura



====================
Hiro context manager
====================


Timeline context
================
The ``hiro.Timeline`` context manager hijacks a few commonly used time functions
to allow time manipulation within its context. Specifically ``time.sleep``, ``time.time``,
``time.gmtime``, ``datetime.now``, ``datetime.utcnow`` and ``datetime.today`` behave according the configuration of the context.

The context provides the following manipulation options:

* ``rewind``: accepts seconds as an integer or a ``timedelta`` object.
* ``forward``: accepts seconds as an integer or a ``timedelta`` object.
* ``freeze``: accepts a floating point time since epoch or ``datetime`` or ``date`` object to freeze the time at.
* ``unfreeze``: resumes time from the point it was frozen at.
* ``scale``: accepts a floating point to accelerate/decelerate time by. ``> 1 = acceleration,  < 1 = deceleration``
* ``reset``: resets all time alterations.

.. code-block:: python

    import hiro
    from datetime import timedelta, datetime
    import time

    datetime.now().isoformat()
    # OUT: '2013-12-01T06:55:41.706060'
    with hiro.Timeline() as timeline:

        # forward by an hour
        timeline.forward(60*60)
        datetime.now().isoformat()
        # OUT: '2013-12-01T07:55:41.707383'

        # jump forward by 10 minutes
        timeline.forward(timedelta(minutes=10))
        datetime.now().isoformat()
        # OUT: '2013-12-01T08:05:41.707425'

        # jump to yesterday and freeze
        timeline.freeze(datetime.now() - timedelta(hours=24))
        datetime.now().isoformat()
        # OUT: '2013-11-30T09:15:41'

        timeline.scale(5) # scale time by 5x
        time.sleep(5) # this will effectively only sleep for 1 second

        # since time is frozen the sleep has no effect
        datetime.now().isoformat()
        # OUT: '2013-11-30T09:15:41'

        timeline.rewind(timedelta(days=365))

        datetime.now().isoformat()
        # OUT: '2012-11-30T09:15:41'



To reduce the amount of statements inside the context, certain timeline setup
tasks can be done via the constructor and/or by using the fluent interface.

.. code-block:: python

    import hiro
    import time
    from datetime import timedelta, datetime

    start_point = datetime(2012,12,12,0,0,0)
    my_timeline = hiro.Timeline(scale=5).forward(60*60).freeze()
    with my_timeline as timeline:
        print datetime.now()
        # OUT: '2012-12-12 01:00:00.000315'
        time.sleep(5) # effectively 1 second
        # no effect as time is frozen
        datetime.now()
        # OUT: '2012-12-12 01:00:00.000315'
        timeline.unfreeze()
        # back to starting point
        datetime.now()
        # OUT: '2012-12-12 01:00:00.000317'
        time.sleep(5) # effectively 1 second
        # takes effect (+5 seconds)
        datetime.now()
        # OUT: '2012-12-12 01:00:05.003100'


``Timeline`` can additionally be used as a decorator

.. code-block:: python

    import hiro
    import time, datetime

    @hiro.Timeline(scale=50000)
    def sleeper():
        datetime.datetime.now()
        # OUT: '2013-11-30 14:27:43.409291'
        time.sleep(60*60) # effectively 72 ms
        datetime.datetime.now()
        # OUT: '2013-11-30 15:28:36.240675'

    @hiro.Timeline()
    def sleeper_aware(timeline):
        datetime.datetime.now()
        # OUT: '2013-11-30 14:27:43.409291'
        timeline.forward(60*60)
        datetime.datetime.now()
        # OUT: '2013-11-30 15:28:36.240675'

==============
Hiro executors
==============

In order to execute certain callables within a ``Timeline`` context, two
shortcut functions are provided.

* ``run_sync(factor=1, callable, *args, **kwargs)``
* ``run_async(factor=1, callable, *args, **kwargs)``

Both functions return a ``ScaledRunner`` object which provides the following methods

* ``get_execution_time``: The actual execution time of the ``callable``
* ``get_response`` (will either return the actual return value of ``callable`` or raise the exception that was thrown)

``run_async`` returns a derived class of ``ScaledRunner`` that additionally provides the following methods

* ``is_running``: ``True/False`` depending on whether the callable has completed execution
* ``join``: blocks until the ``callable`` completes execution


Example
=======

.. code-block:: python


    import hiro
    import time

    def _slow_function(n):
        time.sleep(n)
        if n > 10:
            raise RuntimeError()
        return n

    runner = hiro.run_sync(10, _slow_function, 10)
    runner.get_response()
    # OUT: 10

    # due to the scale factor 10 it only took 1s to execute
    runner.get_execution_time()
    # OUT: 1.1052658557891846

    runner = hiro.run_async(10, _slow_function, 11)
    runner.is_running()
    # OUT: True
    runner.join()
    runner.get_execution_time()
    # OUT: 1.1052658557891846
    runner.get_response()
    # OUT: Traceback (most recent call last):
    # ....
    # OUT:   File "<input>", line 4, in _slow_function
    # OUT: RuntimeError



.. :changelog:

Changelog
=========

v1.1.1
------
Release Date: 2023-01-11

Chore:
  * Fix github release action

v1.1.0
------
Release Date: 2023-01-11

Features:
  * Patch time.time_ns, time.monotonic, time.monotonic_ns, time.localtime

Bug Fix:
  * Ensure time.gmtime and time.localtime work with 0 values
  * Ensure Timeline can be instantiated with start=0 to reflect  time=0
  * Improve naming of threaded classes/functions

Deprecation:
  * Deprecated `run_async` in favor of `run_threaded`

v1.0.2
------
Release Date: 2023-01-11

Chores:
  * Update documentation theme

v1.0.1
------
Release Date: 2023-01-11

Compatibility:
  * Update package classifiers to reflect python version support

v1.0.0
------
Release Date: 2023-01-10

Compatibility:
  * Drop support for python < 3.7
  * Update sources to not need six for compatibility

Chores:
  * Standardize linting
  * Add Asia/Shanghai to CI matrix


v0.5.1
------
Release Date: 2019-10-10

Code cleanup

v0.5
----
Release Date: 2017-07-26

Bug Fix:
  * Account for microsecond resolution (`Pull Request 3 <https://github.com/alisaifee/hiro/pull/3>`_)

v0.1.8
------
Release Date: 2015-06-07

* Add Python 3.x support

v0.1.5
------
Release Date: 2014-04-03

Bug Fix:
  * Imports from time weren't being patched.

v0.1.3
------
Release Date: 2014-04-01

Enhanced timeline decorator to pass generated timeline
to decorated function

v0.1.2
------
Release Date: 2014-02-20

* Added blacklist for unpatchable modules
* CI improvements
* removed ScaledTimeline

v0.1.1
------
Release Date: 2013-12-05

Added pypy support

v0.0.3
------
Release Date: 2013-11-30

Allow ScaledTimeline to be used as a decorator

v0.0.1
------
Release Date: 2013-11-30

Initial Release







            

Raw data

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    "description": ".. |ci| image:: https://github.com/alisaifee/hiro/workflows/CI/badge.svg?branch=master\n    :target: https://github.com/alisaifee/hiro/actions?query=branch%3Amaster+workflow%3ACI\n.. |coveralls| image:: https://img.shields.io/coveralls/alisaifee/hiro/master.svg?style=flat-square\n    :target: https://coveralls.io/r/alisaifee/hiro?branch=master\n.. |license| image:: https://img.shields.io/pypi/l/hiro.svg?style=flat-square\n    :target: https://pypi.python.org/pypi/hiro\n.. |pypi| image:: https://img.shields.io/pypi/v/hiro.svg?style=flat-square\n    :target: https://pypi.python.org/pypi/hiro\n.. |docs| image:: https://readthedocs.org/projects/hiro/badge\n    :target: https://hiro.readthedocs.org\n\n\n********************************************************\nHiro - time manipulation utilities for testing in python\n********************************************************\n|ci| |coveralls| |pypi| |docs| |license|\n\n   Yatta!\n\n   -- Hiro Nakamura\n\n\n\n====================\nHiro context manager\n====================\n\n\nTimeline context\n================\nThe ``hiro.Timeline`` context manager hijacks a few commonly used time functions\nto allow time manipulation within its context. Specifically ``time.sleep``, ``time.time``,\n``time.gmtime``, ``datetime.now``, ``datetime.utcnow`` and ``datetime.today`` behave according the configuration of the context.\n\nThe context provides the following manipulation options:\n\n* ``rewind``: accepts seconds as an integer or a ``timedelta`` object.\n* ``forward``: accepts seconds as an integer or a ``timedelta`` object.\n* ``freeze``: accepts a floating point time since epoch or ``datetime`` or ``date`` object to freeze the time at.\n* ``unfreeze``: resumes time from the point it was frozen at.\n* ``scale``: accepts a floating point to accelerate/decelerate time by. ``> 1 = acceleration,  < 1 = deceleration``\n* ``reset``: resets all time alterations.\n\n.. code-block:: python\n\n    import hiro\n    from datetime import timedelta, datetime\n    import time\n\n    datetime.now().isoformat()\n    # OUT: '2013-12-01T06:55:41.706060'\n    with hiro.Timeline() as timeline:\n\n        # forward by an hour\n        timeline.forward(60*60)\n        datetime.now().isoformat()\n        # OUT: '2013-12-01T07:55:41.707383'\n\n        # jump forward by 10 minutes\n        timeline.forward(timedelta(minutes=10))\n        datetime.now().isoformat()\n        # OUT: '2013-12-01T08:05:41.707425'\n\n        # jump to yesterday and freeze\n        timeline.freeze(datetime.now() - timedelta(hours=24))\n        datetime.now().isoformat()\n        # OUT: '2013-11-30T09:15:41'\n\n        timeline.scale(5) # scale time by 5x\n        time.sleep(5) # this will effectively only sleep for 1 second\n\n        # since time is frozen the sleep has no effect\n        datetime.now().isoformat()\n        # OUT: '2013-11-30T09:15:41'\n\n        timeline.rewind(timedelta(days=365))\n\n        datetime.now().isoformat()\n        # OUT: '2012-11-30T09:15:41'\n\n\n\nTo reduce the amount of statements inside the context, certain timeline setup\ntasks can be done via the constructor and/or by using the fluent interface.\n\n.. code-block:: python\n\n    import hiro\n    import time\n    from datetime import timedelta, datetime\n\n    start_point = datetime(2012,12,12,0,0,0)\n    my_timeline = hiro.Timeline(scale=5).forward(60*60).freeze()\n    with my_timeline as timeline:\n        print datetime.now()\n        # OUT: '2012-12-12 01:00:00.000315'\n        time.sleep(5) # effectively 1 second\n        # no effect as time is frozen\n        datetime.now()\n        # OUT: '2012-12-12 01:00:00.000315'\n        timeline.unfreeze()\n        # back to starting point\n        datetime.now()\n        # OUT: '2012-12-12 01:00:00.000317'\n        time.sleep(5) # effectively 1 second\n        # takes effect (+5 seconds)\n        datetime.now()\n        # OUT: '2012-12-12 01:00:05.003100'\n\n\n``Timeline`` can additionally be used as a decorator\n\n.. code-block:: python\n\n    import hiro\n    import time, datetime\n\n    @hiro.Timeline(scale=50000)\n    def sleeper():\n        datetime.datetime.now()\n        # OUT: '2013-11-30 14:27:43.409291'\n        time.sleep(60*60) # effectively 72 ms\n        datetime.datetime.now()\n        # OUT: '2013-11-30 15:28:36.240675'\n\n    @hiro.Timeline()\n    def sleeper_aware(timeline):\n        datetime.datetime.now()\n        # OUT: '2013-11-30 14:27:43.409291'\n        timeline.forward(60*60)\n        datetime.datetime.now()\n        # OUT: '2013-11-30 15:28:36.240675'\n\n==============\nHiro executors\n==============\n\nIn order to execute certain callables within a ``Timeline`` context, two\nshortcut functions are provided.\n\n* ``run_sync(factor=1, callable, *args, **kwargs)``\n* ``run_async(factor=1, callable, *args, **kwargs)``\n\nBoth functions return a ``ScaledRunner`` object which provides the following methods\n\n* ``get_execution_time``: The actual execution time of the ``callable``\n* ``get_response`` (will either return the actual return value of ``callable`` or raise the exception that was thrown)\n\n``run_async`` returns a derived class of ``ScaledRunner`` that additionally provides the following methods\n\n* ``is_running``: ``True/False`` depending on whether the callable has completed execution\n* ``join``: blocks until the ``callable`` completes execution\n\n\nExample\n=======\n\n.. code-block:: python\n\n\n    import hiro\n    import time\n\n    def _slow_function(n):\n        time.sleep(n)\n        if n > 10:\n            raise RuntimeError()\n        return n\n\n    runner = hiro.run_sync(10, _slow_function, 10)\n    runner.get_response()\n    # OUT: 10\n\n    # due to the scale factor 10 it only took 1s to execute\n    runner.get_execution_time()\n    # OUT: 1.1052658557891846\n\n    runner = hiro.run_async(10, _slow_function, 11)\n    runner.is_running()\n    # OUT: True\n    runner.join()\n    runner.get_execution_time()\n    # OUT: 1.1052658557891846\n    runner.get_response()\n    # OUT: Traceback (most recent call last):\n    # ....\n    # OUT:   File \"<input>\", line 4, in _slow_function\n    # OUT: RuntimeError\n\n\n\n.. :changelog:\n\nChangelog\n=========\n\nv1.1.1\n------\nRelease Date: 2023-01-11\n\nChore:\n  * Fix github release action\n\nv1.1.0\n------\nRelease Date: 2023-01-11\n\nFeatures:\n  * Patch time.time_ns, time.monotonic, time.monotonic_ns, time.localtime\n\nBug Fix:\n  * Ensure time.gmtime and time.localtime work with 0 values\n  * Ensure Timeline can be instantiated with start=0 to reflect  time=0\n  * Improve naming of threaded classes/functions\n\nDeprecation:\n  * Deprecated `run_async` in favor of `run_threaded`\n\nv1.0.2\n------\nRelease Date: 2023-01-11\n\nChores:\n  * Update documentation theme\n\nv1.0.1\n------\nRelease Date: 2023-01-11\n\nCompatibility:\n  * Update package classifiers to reflect python version support\n\nv1.0.0\n------\nRelease Date: 2023-01-10\n\nCompatibility:\n  * Drop support for python < 3.7\n  * Update sources to not need six for compatibility\n\nChores:\n  * Standardize linting\n  * Add Asia/Shanghai to CI matrix\n\n\nv0.5.1\n------\nRelease Date: 2019-10-10\n\nCode cleanup\n\nv0.5\n----\nRelease Date: 2017-07-26\n\nBug Fix:\n  * Account for microsecond resolution (`Pull Request 3 <https://github.com/alisaifee/hiro/pull/3>`_)\n\nv0.1.8\n------\nRelease Date: 2015-06-07\n\n* Add Python 3.x support\n\nv0.1.5\n------\nRelease Date: 2014-04-03\n\nBug Fix:\n  * Imports from time weren't being patched.\n\nv0.1.3\n------\nRelease Date: 2014-04-01\n\nEnhanced timeline decorator to pass generated timeline\nto decorated function\n\nv0.1.2\n------\nRelease Date: 2014-02-20\n\n* Added blacklist for unpatchable modules\n* CI improvements\n* removed ScaledTimeline\n\nv0.1.1\n------\nRelease Date: 2013-12-05\n\nAdded pypy support\n\nv0.0.3\n------\nRelease Date: 2013-11-30\n\nAllow ScaledTimeline to be used as a decorator\n\nv0.0.1\n------\nRelease Date: 2013-11-30\n\nInitial Release\n\n\n\n\n\n\n",
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