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#include <xenium/marked_ptr.hpp>
#include <gtest/gtest.h>
namespace {
struct Foo {
int x;
[[maybe_unused]] static constexpr int number_of_mark_bits = 0;
};
TEST(marked_ptr, get_returns_correct_pointer)
{
Foo f;
xenium::marked_ptr<Foo, 2> p(&f, 3);
EXPECT_EQ(&f, p.get());
xenium::marked_ptr<Foo, 18> p2(&f, (1 << 18) - 1);
EXPECT_EQ(&f, p2.get());
}
TEST(marked_ptr, mark_returns_correct_value) {
Foo f;
xenium::marked_ptr<Foo, 2> p(&f, 3);
EXPECT_EQ(3, p.mark());
auto mark = (1 << 18) - 1;
xenium::marked_ptr<Foo, 18> p2(&f, mark);
EXPECT_EQ(mark, p2.mark());
}
TEST(marked_ptr, deref_works_correctly)
{
Foo f;
xenium::marked_ptr<Foo, 2> p(&f, 3);
p->x = 42;
EXPECT_EQ(42, f.x);
(*p).x = 43;
EXPECT_EQ(43, f.x);
}
TEST(marked_ptr, reset_sets_ptr_to_null)
{
Foo f;
xenium::marked_ptr<Foo, 2> p(&f, 3);
p.reset();
EXPECT_EQ(nullptr, p.get());
}
}
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