TEST(StackAllocator, marker) {
StackAllocator allocator;
void *ptr1 = allocator.Malloc(10);
void *ptr2 = allocator.Malloc(20);
StackAllocator::Marker makrer_a = allocator.GetMarker();
int remain_size_1 = allocator.remain_size();
void *ptr3 = allocator.Malloc(30);
void *ptr4 = allocator.Malloc(400);
allocator.FreeToMarker(makrer_a);
EXPECT_EQ(remain_size_1, allocator.remain_size());
}
TEST(StackAllocator, basic_malloc_free) {
StackAllocator allocator;
EXPECT_EQ(allocator.stack_size(), allocator.remain_size());
const int header_size = allocator.GetAllocHeaderSize();
void *ptr1 = allocator.Malloc(10);
EXPECT_EQ(allocator.stack_size() - (10 + header_size), allocator.remain_size());
void *ptr2 = allocator.Malloc(20);
EXPECT_EQ(allocator.stack_size() - (20 + 10 + header_size * 2), allocator.remain_size());
EXPECT_NE(20, (uchar*)ptr2 - (uchar*)ptr1);
allocator.Free(ptr2);
EXPECT_EQ(allocator.stack_size() - (10 + header_size), allocator.remain_size());
allocator.Free(ptr1);
EXPECT_EQ(allocator.stack_size(), allocator.remain_size());
}
