LexerMarkUnaryOperatorsTests Should_return_empty_list_when_get_empty_list
LexerMarkUnaryOperatorsTests Should_mark_unary_minus_after_another_minus
Extract class UnaryOperatorMarker
LexerMarkUnaryOperatorsTests Should_mark_unary_only_minus_after_left_paren
LexerMarkUnaryOperatorsTests Should_mark_all_pluses_in_following_experssion_as_unary