Make core-buffer folder with all common stuff used in the buffer

sf-buffer/test/test_buffer_utils.cpp

@@ -1,47 +0,0 @@
-#include "gtest/gtest.h"
-#include "../src/buffer_utils.hpp"
-
-using namespace std;
-
-TEST(BufferUtils, get_filename)
-{
-    auto expected_file = "/root/device-1/12300000/12345000.h5";
-
-    auto root_folder = "/root";
-    auto device_name = "device-1";
-
-    auto result = get_filename(
-            root_folder,
-            device_name,
-            12345000);
-
-    ASSERT_EQ(result, expected_file);
-
-    auto result2 = get_filename(
-            root_folder,
-            device_name,
-            12345999);
-
-    ASSERT_EQ(result2, expected_file);
-
-    auto result3 = get_filename(
-            root_folder,
-            device_name,
-            12346000);
-
-    ASSERT_NE(result3, expected_file);
-
-    auto result4 = get_filename(
-            root_folder,
-            device_name,
-            12344999);
-
-    ASSERT_NE(result4, expected_file);
-}
-
-TEST(BufferUtils, get_file_frame_index)
-{
-    ASSERT_EQ(get_file_frame_index(12345000), 0);
-    ASSERT_EQ(get_file_frame_index(12345543), 543);
-    ASSERT_EQ(get_file_frame_index(12345999), 999);
-}

sf-buffer/test/test_main.cpp

@@ -1,5 +1,4 @@
 #include "gtest/gtest.h"
-#include "test_buffer_utils.cpp"
 
 using namespace std;