def test_range_expression_single_repr():
    expr = RangeExpression(4)
    assert repr(expr) == 'RangeExpression(4)'
def test_range_expression_step_repr():
    expr = RangeExpression(3, 7, 2)
    assert repr(expr) == 'RangeExpression(3, 7, 2)'
def test_range_expression_repr():
    expr = RangeExpression(3, 7)
    assert repr(expr) == 'RangeExpression(3, 7)'