[c++] Generation tests for class with private members

[ladisgin]

Add ability to generate tests for classes with private member.
Access to private in klee and tests by hliberacki/cpp-member-accessor.
For check access right add AccessSpecifier to field and fill by clang getAccess().

planned klee file code

MEMBER_ACCESSOR(point_x, point, x, int)
MEMBER_ACCESSOR(point_y, point, y, int)

int klee_entry__private_set_zero(int utbot_argc, char ** utbot_argv, char ** utbot_envp) {
    class point t;
    klee_make_symbolic(&t, sizeof(t), "t");
    klee_prefer_cex(&t, accessor::accessMember<point_x>(t) >= -10  & accessor::accessMember<point_x>(t) <= 10);
    klee_prefer_cex(&t, accessor::accessMember<point_y>(t) >= -10  & accessor::accessMember<point_y>(t) <= 10);
    //////////////////////////////////////////// 
    class point t_post;
    klee_make_symbolic(&t_post, sizeof(t_post), "t_post");
set_zero(t);
    klee_assume(accessor::accessMember<point_x>(t) == accessor::accessMember<point_x>(t_post));
    klee_assume(accessor::accessMember<point_y>(t) == accessor::accessMember<point_y>(t_post));
    return 0;
}

planned result test code (probably MEMBER_ACCESSOR will move to header)

MEMBER_ACCESSOR(point_x, point, x, int)
MEMBER_ACCESSOR(point_y, point, y, int)

TEST(regression, set_zero_test_1)
{
    class point t = {0, 0};
    set_zero(t);
    class point expected_t = {0, 0};
    EXPECT_EQ(accessor::accessMember<point_x>(expected_t), accessor::accessMember<point_x>(t));
    EXPECT_EQ(accessor::accessMember<point_y>(expected_t), accessor::accessMember<point_y>(t));
}

[korifey]

How user should add this library header in his tests? Or UTBot will add it?

[ladisgin]

UTBot will add header to tests