diff --git a/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.cpp b/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.cpp
index c27c0d0e35adc9f4aa41ca9de1aa8c2af4c70145..7e8d81a46af88306d16032fc88c191208f85adbe 100644
--- a/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.cpp
+++ b/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.cpp
@@ -13,15 +13,64 @@
 // ************************************************************************** //
 
 #include "CoreIOPathTest.h"
+#include "BATesting.h"
+#include "FileSystemUtils.h"
+#include "IntensityDataIOFactory.h"
+#include "OutputData.h"
+#include "TestUtils.h"
+#include <boost/filesystem.hpp>
 #include <iostream>
+#include <memory>
 
-CoreIOPathTest::CoreIOPathTest()
+namespace
 {
+std::unique_ptr<OutputData<double>> createTestData();
+bool test_io(const OutputData<double>* data, const std::string& file_name);
+} // namespace
 
-}
+CoreIOPathTest::CoreIOPathTest() = default;
 
 bool CoreIOPathTest::runTest()
 {
-    std::cout << "Hello world" << std::endl;
-    return true;
+    const auto data = createTestData();
+    const char filename_rus[] = "\xd0\xb4\xd0\xb0\xd0\xbd\xd0\xbd\xd1\x8b\xd0\xb5\x2e\x69\x6e\x74";
+    const char dirname_rus[] =
+        "\xd0\xb4\xd0\xb8\xd1\x80\xd0\xb5\xd0\xba\xd1\x82\xd0\xbe\xd1\x80\xd0\xb8\xd1\x8f";
+
+    const boost::filesystem::path test_dir(BATesting::CoreOutputDir());
+    const boost::filesystem::path test_subdir("test_CoreIOPathTest");
+
+    FileSystemUtils::createDirectories((test_dir / test_subdir).string());
+
+    // tests file writing when file name contains cyrillic characters
+    bool success(true);
+    boost::filesystem::path test_file(filename_rus);
+    success &= test_io(data.get(), (test_dir / test_subdir / test_file).string());
+
+    // tests file writing and directory creation when dirname contains cyrillic characters
+    boost::filesystem::path test_subdir_rus(dirname_rus);
+    FileSystemUtils::createDirectories((test_dir / test_subdir / test_subdir_rus).string());
+    success &= test_io(data.get(), (test_dir / test_subdir / test_subdir_rus / test_file).string());
+
+    return success;
+}
+
+namespace
+{
+std::unique_ptr<OutputData<double>> createTestData()
+{
+    std::unique_ptr<OutputData<double>> result(new OutputData<double>);
+    result->addAxis("x", 10, 0.0, 10.0);
+    for (size_t i = 0; i < result->getAllocatedSize(); ++i)
+        (*result)[i] = static_cast<double>(i);
+    return result;
 }
+
+bool test_io(const OutputData<double>* data, const std::string& file_name)
+{
+    IntensityDataIOFactory::writeOutputData(*data, file_name);
+    std::unique_ptr<OutputData<double>> loaded(IntensityDataIOFactory::readOutputData(file_name));
+    return TestUtils::isTheSame(*data, *loaded, 1e-06);
+}
+
+} // namespace
diff --git a/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.h b/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.h
index 3e7a17df25f83585a9fd0b0de805fc736fb02391..b468d0b3647e69cfe3cf341fe775af266aa2ca7e 100644
--- a/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.h
+++ b/Tests/Functional/Core/CoreSpecial/CoreIOPathTest.h
@@ -25,7 +25,6 @@ public:
     CoreIOPathTest();
 
     bool runTest();
-
 };
 
 #endif // COREIOPATHTEST_H