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✅ Data is frozen

CategoryAbility
StatusPassing
Testtests/test_data_loader.py::test_data_is_frozen

PRECONDITIONS:

Preconditions​

  • Unit data loaded

Action​

  • Attempt to mutate unit.hp.
unit = get_unit("001")
    with pytest.raises((AttributeError, TypeError)):
        unit.hp = 999

Expected Postconditions​

  • Raises FrozenInstanceError (a subclass of AttributeError).

  • The original UNITS dict is unchanged.

  • This ensures unit data is treated as immutable constants.