tests/intrusive_shared_ptr_src/get.cpp

   1 //
   2 // Tests for
   3 //  pointer get() const noexcept;
   4 //
   5
   6 #include <libkern/c++/intrusive_shared_ptr.h>
   7 #include "test_policy.h"
   8 #include <darwintest.h>
   9 #include <utility>
  10
  11 struct T {
  12         int i;
  13 };
  14
  15 template <typename T>
  16 static constexpr auto
  17 can_call_get_on_temporary(int)->decltype(std::declval<test_shared_ptr<T> >().get(), bool ())
  18 {
  19         return true;
  20 }
  21
  22 template <typename T>
  23 static constexpr auto
  24 can_call_get_on_temporary(...)->bool
  25 {
  26         return false;
  27 }
  28
  29 template <typename T>
  30 static void
  31 tests()
  32 {
  33         {
  34                 T obj{3};
  35                 tracking_policy::reset();
  36                 tracked_shared_ptr<T> const ptr(&obj, libkern::retain);
  37                 T* raw = ptr.get();
  38                 CHECK(raw == &obj);
  39                 CHECK(ptr.get() == raw); // ptr didn't change
  40                 CHECK(tracking_policy::retains == 1);
  41                 CHECK(tracking_policy::releases == 0);
  42         }
  43
  44         static_assert(!can_call_get_on_temporary<T>(int{}), "");
  45 }
  46
  47 T_DECL(get, "intrusive_shared_ptr.get") {
  48         tests<T>();
  49         tests<T const>();
  50 }