projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| f427ee49 A |
1 | // |
| 2 | // Tests for | |
| 3 | // template<typename To, typename From, typename R> | |
| 4 | // intrusive_shared_ptr<To, R> const_pointer_cast(intrusive_shared_ptr<From, R> const& ptr) noexcept; | |
| 5 | // | |
| 6 | // template<typename To, typename From, typename R> | |
| 7 | // intrusive_shared_ptr<To, R> const_pointer_cast(intrusive_shared_ptr<From, R>&& ptr) noexcept | |
| 8 | // | |
| 9 | ||
| 10 | #include <libkern/c++/intrusive_shared_ptr.h> | |
| 11 | #include <utility> | |
| 12 | #include <darwintest.h> | |
| 13 | #include "test_policy.h" | |
| 14 | ||
| 15 | struct T { int i; }; | |
| 16 | ||
| 17 | template <typename Stored, typename From, typename To> | |
| 18 | static void | |
| 19 | tests() | |
| 20 | { | |
| 21 | Stored obj{3}; | |
| 22 | ||
| 23 | { | |
| 24 | tracked_shared_ptr<From> const from(&obj, libkern::no_retain); | |
| 25 | tracking_policy::reset(); | |
| 26 | tracked_shared_ptr<To> to = libkern::const_pointer_cast<To>(from); | |
| 27 | CHECK(tracking_policy::retains == 1); | |
| 28 | CHECK(tracking_policy::releases == 0); | |
| 29 | CHECK(to.get() == const_cast<To*>(&obj)); | |
| 30 | CHECK(from.get() == &obj); | |
| 31 | } | |
| 32 | { | |
| 33 | tracked_shared_ptr<From> from(&obj, libkern::no_retain); | |
| 34 | tracking_policy::reset(); | |
| 35 | tracked_shared_ptr<To> to = libkern::const_pointer_cast<To>(std::move(from)); | |
| 36 | CHECK(tracking_policy::retains == 0); | |
| 37 | CHECK(tracking_policy::releases == 0); | |
| 38 | CHECK(to.get() == const_cast<To*>(&obj)); | |
| 39 | CHECK(from.get() == nullptr); | |
| 40 | } | |
| 41 | ||
| 42 | // Test `const_pointer_cast`ing a null pointer | |
| 43 | { | |
| 44 | tracked_shared_ptr<From> const from = nullptr; | |
| 45 | tracking_policy::reset(); | |
| 46 | tracked_shared_ptr<To> to = libkern::const_pointer_cast<To>(from); | |
| 47 | CHECK(tracking_policy::retains == 0); | |
| 48 | CHECK(tracking_policy::releases == 0); | |
| 49 | CHECK(to.get() == nullptr); | |
| 50 | CHECK(from.get() == nullptr); | |
| 51 | } | |
| 52 | { | |
| 53 | tracked_shared_ptr<From> from = nullptr; | |
| 54 | tracking_policy::reset(); | |
| 55 | tracked_shared_ptr<To> to = libkern::const_pointer_cast<To>(std::move(from)); | |
| 56 | CHECK(tracking_policy::retains == 0); | |
| 57 | CHECK(tracking_policy::releases == 0); | |
| 58 | CHECK(to.get() == nullptr); | |
| 59 | CHECK(from.get() == nullptr); | |
| 60 | } | |
| 61 | } | |
| 62 | ||
| 63 | T_DECL(cast_const, "intrusive_shared_ptr.cast.const") { | |
| 64 | tests</*stored*/ T, /*from*/ T, /*to*/ T>(); | |
| 65 | tests</*stored*/ T, /*from*/ T, /*to*/ T const>(); | |
| 66 | tests</*stored*/ T, /*from*/ T const, /*to*/ T>(); | |
| 67 | } |