import pytest

from phasm import typing as sut

class TestTypeConstraintBitWidth:
    @pytest.mark.parametrize('oneof,exp', [
        (set(), '', ),
        ({1}, '1', ),
        ({1,2}, '1,2', ),
        ({1,2,3}, '1..3', ),
        ({1,2,3,4}, '1..4', ),

        ({1,3}, '1,3', ),
        ({1,4}, '1,4', ),

        ({1,2,3,4,6,7,8,9}, '1..4,6..9', ),
    ])
    def test_repr(self, oneof, exp):
        mut_self = sut.TypeConstraintBitWidth(oneof=oneof)
        assert ('BitWidth=' + exp) == repr(mut_self)