diff --git a/services/backup/test/ToolsTest.cpp b/services/backup/test/ToolsTest.cpp
new file mode 100644
--- /dev/null
+++ b/services/backup/test/ToolsTest.cpp
@@ -0,0 +1,86 @@
+#include "Tools.h"
+#include <gtest/gtest.h>
+
+#include <stdio.h>
+
+#include <ctime>
+#include <iomanip>
+#include <iostream>
+#include <sstream>
+
+using namespace comm::network::tools;
+
+class ToolsTest : public testing::Test {
+protected:
+  virtual void SetUp() {
+  }
+  virtual void TearDown() {
+  }
+};
+
+int expectedLength = 50;
+
+std::vector<std::string> examples = {
+    "𒀱ʪ৺i𒁭fc𒀗𒀱v𒀱˨d𒃆zͲh࣍𒁭𒀕𒀠ˀ˲bࢵʒew0ङ৾ύɈ̂nഫ𒀍̶𒃘ȴ𒁞ȾȐϱ𒂊xι0"
+    "1"
+    "ॻ",
+    "Ɉ𒁄Θː࣫ɸɊ𒃚ૂchೞ𒀰ͤহুࣣ𒂍𒃨𒃝ࢂீwq𒀮2𒀧ࣙʘȨ𒂒ʔబoଵણ𒀒kమ𒂓χj𒃡z𒁤i𒁋Σ"
+    "੨"
+    "𒁈",
+    "zृp𒁱ʼ̾ΣથhȾ𒂼𒃘𒁏ঽbwࣛ𒂽𒀏Ϸz𒁂𒂎2Ȩis𒂁𒂃𒁞𒀷ˠɖओ̚˘01yૼcಕlpࡥ̈ϑ𒃏"
+    "ˬ"
+    "˜",
+    "Ɍଢyফi𒁝͐ॿˢ࢑𒀹ͦv͞𒂼ʞɪ࡞ா𒀛k𒁂𒀦r𒀹ЃͶூϣȸ𒁦Ȍ𒁗𒂕𒂷ʞzࡂ৾mʜʺॉnk̜𒁴ࣇ"
+    "q"
+    "e",
+    "ɨɐയ𒂂nঢ়˦ࡺૡyiuwঊx𒁑ˆ௬ȖfdsapϡશેȜc𒀠𒂍࣫𒁗𒀛ࡎȚc𒃖ɴb𒁞Χ˜॓wࡴgs"
+    "q"
+    "ఇ",
+    "𒀸𒀟uέkେ𒁆𒃋ࢥ𒁃𒀋ࡼಡlͦ𒁔rͤਓˎɘ𒀱͐iɲ𒂽rr𒃈uࡐ𒁨ॷೡ𒂁ଵˢ3୫e0𒁻p𒂄r̜Ϗ𒀠"
+    "૯"
+    "˰",
+    "𒃃ɞ͂𒂍̪ষjಝࡘ𒁢b𒀐𒀜𒂓𒃃o˨ࡒ𒃗̤Ѕ𒂿𒀺ஸd𒃍𒁫zȤക𒀠bऽϏʸ𒁦𒁵iࡆ𒁄𒀑ϡ॥ɾ𒂂ࢱȌΊ"
+    "e"
+    "𒀦",
+    "rऩ𒃂𒀮𒀁𒃀हம𒀝γ𒀟0𒁛𒂪l͢1ૌ3𒃂𒂸ঢ়তwdɄ𒁨̮͈͊m௶𒀹৮𒂖Ϋa𒀠𒁴ࣻetഉ𒂍𒁥̶͘p˚͔",
+    "𒂍𒀦jࡰ𒂣ˮ𒂇o𒁎vek୭˺sʄufϑʠ𒁯y𒃦ూΧ০t̜w1࢙𒁝latε࢑ʐЃϥీ𒁋ͦ𒁹𒀚𒃛𒁊̼"
+    "అ"
+    "̴",
+    "ࣣൈssࡴ൝ˊ𒀦ɾౠଦদl૧jy2ૼ𒂔𒂂𒁫xॻ͖d𒀻𒃬ʬʒeg𒂚q𒂚𒀄𒀝ࡒప𒀍Ͻe𒂗2ಹ𒀹ˤ૾x"
+    "b"
+    "𒂾",
+    "ʚajరࡀ3ʢm𒁹̲˸మge𒀉fफ𒀨࣋tcj̤𒀓৸˪yuస𒀘ɜϽxЁఋ𒁖ɦഃou𒂴ࣥ̎ϩಣʢআೈ"
+    "𒀂"
+    "𒂝",
+    "̤ధ𒂵𒃄ϥvg𒂺𒃀𒃋f𒃩ುpdɜ𒃛𒀺ࢫള𒀦x୵rλv𒁒3௺1tkॣ̦nx𒃀͞ɤ͖𒃭𒀮rఓൕʘȾm"
+    "𒂗"
+    "௶",
+    ";dङ𒁅ɤu3ఋ𒂠𒃦ϑˢ̾d̖𒀃t𒀮3Ƞ𒁜ȼࡐ1఼b𒃫̀iˢি̬0𒀏ϑ0𒂸ʴ੨𒃮2͢ల୧ࢌ𒁳೩q"
+    "𒀫"
+    "ϙ",
+    "ȸϟ𒁋vq𒀣tਧࡸʔ𒃃𒁿𒂝୩𒁳zjnఐ1࣏𒃡ୟϳbɦઍm𒁆ˠϻirp𒂎n̈൙ফυ𒀭𒃓˖ಅঽࡂȖz"
+    "ஜ"
+    "𒂰",
+    "2huʞଖ𒀭ɘ𒁊Ⱦwൡʨbࣵ𒀍sn𒂀ɞb𒃑en𒁪ૂɦ఼͂qఉ𒀚pc𒀽lঞyk𒁮𒃪gɼΒχ3𒂓𒁂𒁸"
+    "𒀑"
+    "ૣ",
+    "uȪλೡऍ0ࢎˈুw𒁹૩𒁳dࡩ;𒂞3𒃊mΒy𒀟ɂluzࢽ𒁌ॏn𒁦𒁮𒃔ʮ௺𒃁അി𒂲఼হx𒃥Ȫ𒁩ঐ˪"
+    "o"
+    "̺",
+    "𒃫̪૩eु𒀻r૫अ𒂞डક𒁁ਂɄl𒃖𒀠ೖ𒂗ॅɪo𒀇ఐ९Θ𒀐ࣟਰ௸𒀽ηਉ1𒀳ਬ̔ʬ𒀗ਪ𒀑ω̘͚o𒃛w"
+    "𒁖"
+    "ॅ",
+    "𒀱Ͽ𒀤𒂈aി𒂯̄𒁵we𒃟ɂΩΩϱm𒃜ഭ𒀯oʚʦ𒃘2𒃭ണι̘ࡂsιʄਉɎচ𒀫𒁓𒀕ॿ𒂎j𒂾̘2𒁥𒀈एु"
+    "ࢷ",
+    "ࣇϑ0𒁵ଵtxoxϏ𒂉ʄ𒂙ϓoϳ𒃮tਥʪʂwൟਲ਼ˢϫ𒀲˔ফ˘eঔ𒀩Β𒃡k𒁭ਪୱଐ𒃫̊𒂶ৠ𒀧𒀑ഥਓ"
+    "z"
+    "೩",
+    "Ξ𒃚m𒃃ʐध𒂊𒃔𒃨ଊͪഭȒc̺ϳऋpc𒂄ɆΈȎ𒀱𒀧୭ʤ𒁣υʾઅϳ1uȎvίॕϧ𒀴𒀹ङoz𒀑𒁟aఙ𒂱ಛ",
+
+};
+
+TEST_F(ToolsTest, TestOperationsOnTools) {
+  for (auto example : examples) {
+    EXPECT_EQ(expectedLength, getUtf8Length(example));
+  }
+}