Core (Tests): Add aligned allocation tests.

Author: kaixiong

libvisual/tests/CMakeLists.txt

@@ -5,5 +5,6 @@ INCLUDE_DIRECTORIES(
 )
 
 ADD_SUBDIRECTORY(audio_test)
+ADD_SUBDIRECTORY(mem_test)
 ADD_SUBDIRECTORY(video_test)
 ADD_SUBDIRECTORY(time_test)

libvisual/tests/mem_test/CMakeLists.txt

@@ -0,0 +1,3 @@
+LV_BUILD_TEST(aligned_allocation_test
+  SOURCES aligned_allocation_test.cpp
+)

libvisual/tests/mem_test/aligned_allocation_test.cpp

@@ -0,0 +1,63 @@
+#include "test.h"
+#include <libvisual/libvisual.h>
+#include <libvisual/lv_aligned_allocator.hpp>
+#include <string>
+#include <vector>
+#include <cstdint>
+
+namespace
+{
+  inline bool ptr_is_aligned (void* ptr, std::size_t alignment)
+  {
+      return (reinterpret_cast<std::intptr_t> (ptr) % alignment) == 0;
+  }
+
+  void test_allocation ()
+  {
+      std::array<std::size_t, 6> constexpr alignments { 4, 8, 16, 32, 64, 128 };
+
+      for (auto alignment = alignments.begin (); alignment != alignments.end(); ++alignment) {
+          std::size_t const test_block_size = *alignment * 2 + 1;
+
+          void* ptr = visual_mem_malloc_aligned (test_block_size, *alignment);
+          LV_TEST_ASSERT (ptr_is_aligned (ptr, *alignment));
+
+          visual_mem_free_aligned (ptr);
+      }
+  }
+
+  template <std::size_t alignment>
+  void test_cxx_allocator ()
+  {
+      constexpr size_t test_count = 3;
+
+      LV::AlignedAllocator<alignment, std::string> allocator;
+      using allocator_traits = std::allocator_traits<decltype(allocator)>;
+
+      std::string* strings = allocator_traits::allocate (allocator, test_count);
+
+      LV_TEST_ASSERT (ptr_is_aligned (strings, alignment));
+
+      allocator_traits::deallocate (allocator, strings, test_count);
+  }
+
+  void test_cxx_allocators ()
+  {
+      test_cxx_allocator<4> ();
+      test_cxx_allocator<8> ();
+      test_cxx_allocator<16> ();
+      test_cxx_allocator<32> ();
+      test_cxx_allocator<64> ();
+      test_cxx_allocator<128> ();
+  }
+}
+
+int main (int argc, char* argv[])
+{
+    LV::System::init (argc, argv);
+
+    test_allocation ();
+    test_cxx_allocators ();
+
+    LV::System::destroy ();
+}