Support non-unittest class decoration

[leokon]

Contributes towards #20 by allowing any class to be decorated.

All methods starting with test on a decorated class are wrapped.

[adamchainz]

Is your motivation for this feature to use it with test classes in pytest? Because it's already very possible with the existing fixture like:

import time

import pytest


class TestSomething:
    @pytest.fixture(autouse=True)
    def set_time(self, time_machine):
        time_machine.move_to(1000)
        yield

    def test_one(self):
        assert int(time.time()) == 1000

    def test_two(self, time_machine):
        assert int(time.time()) == 1000
        time_machine.move_to(2000)
        assert int(time.time()) == 2000

Perhaps we could document that instead.

I worry that decorating a pytest class not affecting its setup/teardown/fixtures is counterintuitive, and would be hard to move to in the future.

[codecov-commenter]

Codecov Report

Merging #187 (f5baf51) into main (df41aec) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #187   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines          241       253   +12     
  Branches        41        46    +5     
=========================================
+ Hits           241       253   +12     

Impacted Files	Coverage Δ
src/time_machine/__init__.py	100.00% <100.00%> (ø)

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[adamchainz]

Closing due to lack of response.