pytest-freezeblaster 1.0.0

Wrap tests with fixtures in freeze_time

pytest-freezeblaster

Wrap tests with fixtures in freeze_time

Features

• Freeze time in both the test and fixtures
• Access the freezer when you need it

Installation

You can install "pytest-freezeblaster" via pip from PyPI:

$ pip install pytest-freezeblaster

Usage

Freeze time by using the freezer fixture:

    def test_frozen_date(freezer):
        now = datetime.now()
        time.sleep(1)
        later = datetime.now()
        assert now == later

This can then be used to move time:

    def test_moving_date(freezer):
        now = datetime.now()
        freezer.move_to('2017-05-20')
        later = datetime.now()
        assert now != later

You can also pass arguments to freezegun by using the freeze_time mark:

    @pytest.mark.freeze_time('2017-05-21')
    def test_current_date():
        assert date.today() == date(2017, 5, 21)

The freezer fixture and freeze_time mark can be used together, and they work with other fixtures:

    @pytest.fixture
    def current_date():
        return date.today()

    @pytest.mark.freeze_time
    def test_changing_date(current_date, freezer):
        freezer.move_to('2017-05-20')
        assert current_date == date(2017, 5, 20)
        freezer.move_to('2017-05-21')
        assert current_date == date(2017, 5, 21)

They can also be used in class-based tests:

    class TestDate:
        @pytest.mark.freeze_time
        def test_changing_date(self, current_date, freezer):
            freezer.move_to('2017-05-20')
            assert current_date == date(2017, 5, 20)
            freezer.move_to('2017-05-21')
            assert current_date == date(2017, 5, 21)

Credits

All credits go to ktosiek.