diff --git a/tests/functional/CMakeLists.txt b/tests/functional/CMakeLists.txt
index 1fc5291047..6b9430de14 100644
--- a/tests/functional/CMakeLists.txt
+++ b/tests/functional/CMakeLists.txt
@@ -40,4 +40,5 @@ endfunction()
 add_subdirectory(${TESTS_FUNCTIONAL_TESTS_DIR}/boost_ut)
 
 add_subdirectory(${TESTS_FUNCTIONAL_TESTS_DIR}/io_expander)
+add_subdirectory(${TESTS_FUNCTIONAL_TESTS_DIR}/file_manager)
 add_subdirectory(${TESTS_FUNCTIONAL_TESTS_DIR}/qdac)
diff --git a/tests/functional/include/tests/utils.h b/tests/functional/include/tests/utils.h
index 6af8efd52e..90b4d3632a 100644
--- a/tests/functional/include/tests/utils.h
+++ b/tests/functional/include/tests/utils.h
@@ -6,18 +6,44 @@
 
 #include "rtos/ThisThread.h"
 
+#include "FATFileSystem.h"
 #include "LogKit.h"
+#include "SDBlockDevice.h"
 
-namespace utils::time {
+namespace utils {
 
-using namespace leka;
-using namespace std::chrono;
+namespace time {
 
-inline auto start = rtos::Kernel::Clock::now();
-inline auto stop  = rtos::Kernel::Clock::now();
-inline auto delta = [] { return static_cast<int>((stop - start).count()); };
+	using namespace leka;
+	using namespace std::chrono;
 
-}	// namespace utils::time
+	inline auto start = rtos::Kernel::Clock::now();
+	inline auto stop  = rtos::Kernel::Clock::now();
+	inline auto delta = [] { return static_cast<int>((stop - start).count()); };
+
+}	// namespace time
+
+namespace sd {
+
+	namespace internal {
+
+		inline auto bd = SDBlockDevice {SD_SPI_MOSI, SD_SPI_MISO, SD_SPI_SCK};
+		inline auto fs = FATFileSystem {"fs"};
+
+		constexpr auto default_frequency = uint64_t {25'000'000};
+
+	}	// namespace internal
+
+	inline void init()
+	{
+		internal::bd.init();
+		internal::bd.frequency(internal::default_frequency);
+		internal::fs.mount(&internal::bd);
+	}
+
+}	// namespace sd
+
+}	// namespace utils
 
 // NOLINTNEXTLINE
 #define utils_start(msg)                                                                                               \
diff --git a/tests/functional/tests/file_manager/CMakeLists.txt b/tests/functional/tests/file_manager/CMakeLists.txt
new file mode 100644
index 0000000000..97a023f62e
--- /dev/null
+++ b/tests/functional/tests/file_manager/CMakeLists.txt
@@ -0,0 +1,16 @@
+# Leka - LekaOS
+# Copyright 2022 APF France handicap
+# SPDX-License-Identifier: Apache-2.0
+
+register_functional_test(
+	TARGET
+		functional_ut_file_manager
+
+	INCLUDE_DIRECTORIES
+
+	SOURCES
+		suite_file_manager.cpp
+
+	LINK_LIBRARIES
+		FileManagerKit
+)
diff --git a/tests/functional/tests/file_manager/suite_file_manager.cpp b/tests/functional/tests/file_manager/suite_file_manager.cpp
new file mode 100644
index 0000000000..4e7d788149
--- /dev/null
+++ b/tests/functional/tests/file_manager/suite_file_manager.cpp
@@ -0,0 +1,111 @@
+// Leka - LekaOS
+// Copyright 2022 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+#include <cstddef>
+
+#include "FileManagerKit.h"
+#include "boost/ut.hpp"
+#include "filesystem"
+#include "tests/config.h"
+#include "tests/utils.h"
+
+using namespace leka;
+using namespace boost::ut;
+
+struct path {
+	static inline const auto root = std::filesystem::path {"/fs/var/tmp/test"};
+
+	static inline const auto dir		  = root / "dir" / "";
+	static inline const auto sub_dir	  = root / "dir" / "sub";
+	static inline const auto dir_file	  = root / "dir" / "dir_file.txt";
+	static inline const auto sub_dir_file = root / "dir" / "sub" / "sub_dir_file.txt";
+
+	static inline const auto all = std::to_array({dir_file, sub_dir, dir, root});
+
+	static inline auto remove_all = []() {
+		log << "Cleaning up files, directories";
+
+		for (const auto &p: path::all) {
+			if (std::filesystem::exists(p)) {
+				log << "Removing:" << p;
+				std::filesystem::remove(p);
+				expect(not std::filesystem::exists(p)) << p << "still exists";
+			} else {
+				log << "Doesn't exit:" << p;
+			}
+		}
+		log << "\n";
+	};
+};
+
+suite suite_file_manager_kit = [] {
+	auto file		= FileManagerKit::File {};
+	auto input_data = std::to_array("Hello, Leka!");
+
+	utils::sd::init();
+	path::remove_all();
+
+	"open existing file"_test = [&] {
+		auto open = file.open("/fs/usr/test/file-1-ok.txt", "w");
+
+		expect(open >> fatal) << "Failed to open file";
+	};
+
+	"create root directory"_test = [&] {
+		auto created = FileManagerKit::create_directory(path::root);
+
+		expect(created >> fatal) << "Failed to create directory" << path::root;
+	};
+
+	"create directory"_test = [&] {
+		auto created = FileManagerKit::create_directory(path::dir);
+
+		expect(created >> fatal) << "Failed to create directory" << path::dir;
+	};
+
+	"create subdirectory"_test = [&] {
+		auto created = FileManagerKit::create_directory(path::sub_dir);
+
+		expect(created >> fatal) << "Failed to create directory";
+	};
+
+	"create & open new file"_test = [&] {
+		auto open	= file.open(path::dir_file, "w");
+		auto exists = std::filesystem::exists(path::dir_file);
+
+		expect(open >> fatal) << "Failed to open file";
+		expect(exists >> fatal) << "Failed to create file";
+	};
+
+	"close new file"_test = [&] {
+		file.close();
+
+		expect(not file.is_open()) << "Failed to close file";
+	};
+
+	"write to new file "_test = [&] {
+		file.open(path::dir_file, "w");
+		auto bytes = file.write(input_data);
+		file.close();
+
+		expect(bytes == std::size(input_data) >> fatal) << "Failed to write file";
+	};
+
+	"read new file "_test = [&] {
+		auto output_data = std::array<char, 64> {};
+
+		file.open(path::dir_file, "r");
+		auto bytes = file.read(output_data);
+		file.close();
+
+		expect(bytes == std::size(input_data) >> fatal) << "Failed to read file, bytes =" << bytes;
+
+		auto found = std::ranges::search(output_data, input_data);
+
+		expect(not found.empty());
+	};
+
+	file.close();
+	path::remove_all();
+};