def test_corrode__corrodable_calls_add_erosion(mocker):
mocker.patch('components.material.MaterialComponent.add_erosion')
m = MaterialComponent('IRON', 'RUST') # No corrode, means always calls add_erosion
m.corrode()
m.add_erosion.assert_called_once()
def test_corrode__noncorrodable_returns_False():
m = MaterialComponent('WOOD', 'BURN')
assert m.corrode() is False
def test_corrode__corrodable_returns_True():
m = MaterialComponent('IRON', 'RUST', 'CORRODE')
assert m.corrode()