text: #include "hex.h"
  
  #include <library/cpp/unittest/registar.h>
  #include "str.h"
  
  Y_UNIT_TEST_SUITE(THexCodingTest) {
      void TestImpl(const TString& data) {
          TString encoded;
          TStringOutput encodedOut(encoded);
          HexEncode(data.data(), data.size(), encodedOut);
  
          UNIT_ASSERT_EQUAL(encoded.size(), data.size() * 2);
  
          TString decoded;
          TStringOutput decodedOut(decoded);
          HexDecode(encoded.data(), encoded.size(), decodedOut);
  
          UNIT_ASSERT_EQUAL(decoded, data);
      }
  
      Y_UNIT_TEST(TestEncodeDecodeToStream) {
          TString data = "100ABAcaba500,$%0987123456   \n\t\x01\x02\x03.";
          TestImpl(data);
      }
  
      Y_UNIT_TEST(TestEmpty) {
          TestImpl("");
      }
  }
  