public void FullSubjectsExpr_NotRoles()
        {
            var result = DslParser.SubjectsExprParse().Parse(@"subjects
group theta; not eta
group f
person max, andr");

            result.Should().NotBeNull();
            result.Roles.Should().BeNullOrEmpty();
            result.SubjectGroups.Should().HaveCount(2);
            result.SubjectGroups[0].GroupName.Should().Be("theta");
            result.SubjectGroups[0].ExcludedPersons.Should().BeEquivalentTo("eta");
            result.SubjectGroups[1].GroupName.Should().Be("f");
            result.SubjectGroups[1].ExcludedPersons.Should().BeEmpty();
            result.Persons.Should().BeEquivalentTo("max", "andr");
        }
        public void FullSubjectsExpr_NotGroups()
        {
            var result = DslParser.SubjectsExprParse().Parse(@"subjects
role alpha; not beta, gamma
role u
person max, andr");

            result.Should().NotBeNull();
            result.Roles.Should().HaveCount(2);
            result.Roles[0].RoleName.Should().Be("alpha");
            result.Roles[0].ExcludedPersons.Should().BeEquivalentTo("beta", "gamma");
            result.Roles[1].RoleName.Should().Be("u");
            result.Roles[1].ExcludedPersons.Should().BeEmpty();
            result.SubjectGroups.Should().BeNullOrEmpty();
            result.Persons.Should().BeEquivalentTo("max", "andr");
        }