self = <configuration.test_worker.TestConfigurationWorker testMethod=test_startup_delay_range>
mock_random = <MagicMock name='uniform' id='338374848'>

    @patch("random.uniform")
    def test_startup_delay_range(self, mock_random):
        """Test that startup delay is applied with correct range."""
        mock_random.return_value = 7.5  # Middle of range
    
        worker = _ConfigurationWorker(self.mock_configuration_manager)
    
        try:
            # Verify random.uniform was called with correct range
>           mock_random.assert_called_once_with(5.0, 15.0)

tests/configuration/test_worker.py:96: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/opt/hostedtoolcache/PyPy/3.11.13/x64/lib/pypy3.11/unittest/mock.py:951: in assert_called_once_with
    return self.assert_called_with(*args, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <MagicMock name='uniform' id='338374848'>, args = (5.0, 15.0)
kwargs = {}, expected = 'uniform(5.0, 15.0)', actual = 'not called.'
error_message = 'expected call not found.\nExpected: uniform(5.0, 15.0)\n  Actual: not called.'

    def assert_called_with(self, /, *args, **kwargs):
        """assert that the last call was made with the specified arguments.
    
        Raises an AssertionError if the args and keyword args passed in are
        different to the last call to the mock."""
        if self.call_args is None:
            expected = self._format_mock_call_signature(args, kwargs)
            actual = 'not called.'
            error_message = ('expected call not found.\nExpected: %s\n  Actual: %s'
                    % (expected, actual))
>           raise AssertionError(error_message)
E           AssertionError: expected call not found.
E           Expected: uniform(5.0, 15.0)
E             Actual: not called.

/opt/hostedtoolcache/PyPy/3.11.13/x64/lib/pypy3.11/unittest/mock.py:930: AssertionError