Freeze Time doesn't freeze time

[PuercoPop]

Sorry for the lousy Issue title, I don't know how to frase it, but the test case is pretty clear.

Test Case: https://gist.github.com/PuercoPop/4724228

# -*- coding: utf-8 -*-

from datetime import datetime
from freezegun import freeze_time


class A(object):
    def __init__(self):
        self.date = datetime.now()


def test_():
    with freeze_time("1990-01-01 18:00:00"):
        a = A()
    assert a.date.year == 1990

[PuercoPop]

I've just that If I swap the order of the import the testcase works fine, but from the pep8
Imports should be grouped in the following order:

1. standard library imports
2. related third party imports
3. local application/library specific imports

[spulec]

Yes, this is a known limitation of the library (there's a warning in the README). The other workaround involves just importing the datetime module and using that instead of importing classes from the module. Sorry that there's not currently a better answer.

[jorgearanda]

The warning in the README is gone, but this is still failing for me.

[spulec]

Are you running this exact code? It works on my local machine.

If you are using this exact code, can you let me know some more details about your setup? Python version, OS, freezegun version, etc.

If you are not using this exact code, can you show me the code you are using?

[jorgearanda]

That code works, but this, for instance, fails:

from freezegun import freeze_time
from datetime import datetime as dt

freezer = freeze_time('1980-01-01')
freezer.start()
assert dt.now() == dt(1980,1,1)

...whereas importing datetime.datetime after the call to start() succeeds:

from freezegun import freeze_time

freezer = freeze_time('1980-01-01')
freezer.start()
from datetime import datetime as dt
assert dt.now() == dt(1980,1,1)

I have similar issues using the @freeze_time decorator.

I'm on Mac OSX 10.10, python 2.7.1, freezegun 0.2.2.

[spulec]

Okay. So I think the problem here is the aliasing of the datetime import as dt.

The following code works:

from freezegun import freeze_time
from datetime import datetime

freezer = freeze_time('1980-01-01')
freezer.start()
assert datetime.now() == datetime(1980,1,1)

This is definitely a bug, but I want to spend some time figuring out the best way to fix it. I've opened a new issue for this at #64.

Thanks for reporting it.

[jorgearanda]

Awesome, thanks!

[spulec]

I have pushed a fix to master that I think will address this. Can you give it a test?

[jorgearanda]

That was extremely fast, and it works. Thanks a lot for fixing this!