libcruft-util/test/geom/sample/subregion.cpp

47 lines
1.3 KiB
C++

#include <cruft/util/tap.hpp>
#include <cruft/util/extent.hpp>
#include <cruft/util/geom/sample/subregion.hpp>
int
main ()
{
cruft::TAP::logger tap;
static const struct {
cruft::extent2i shape;
cruft::extent2i field;
char const *message;
} TESTS[] = {
{ { 1, 1 }, { 1, 1 }, "Unit shape and unit field" },
{ { 1, 1 }, { 100, 100 }, "Unit shape and large field" },
{ { 10, 10 }, { 100, 100 }, "Square shape and large field" },
{ { 1, 10 }, { 100, 100 }, "Tall shape and large field" },
{ { 10, 1 }, { 100, 100 }, "" },
{ { 2, 2 }, { 100, 100 }, "" },
};
static const int ITERATIONS = 1'000;
for (auto const &[shape, field, msg]: TESTS) {
cruft::rand::xoshiro256plusplus gen (42);
cruft::geom::sample::subregion sampler {shape, field};
cruft::region2i const valid (cruft::point2i (0), field);
bool success = true;
for (int i = 0; i < ITERATIONS; ++i) {
auto const choice = sampler (gen);
if (!valid.covers (choice)) {
success = false;
break;
}
}
tap.expect (success, "subregion coverage validity, %!", msg);
}
return tap.status ();
}