diff --git a/TinySTL/Test/Unordered_setTest.cpp b/TinySTL/Test/Unordered_setTest.cpp
new file mode 100644
index 0000000..d805ac4
--- /dev/null
+++ b/TinySTL/Test/Unordered_setTest.cpp
@@ -0,0 +1,95 @@
+#include "Unordered_setTest.h"
+
+namespace TinySTL{
+	namespace Unordered_setTest{
+		template<class Container1, class Container2>
+		bool container_equal(Container1& con1, Container2& con2){
+			std::vector<typename Container1::value_type> vec1, vec2;
+			for (auto& item : con1){
+				vec1.push_back(item);
+			}
+			for (auto& item : con2){
+				vec2.push_back(item);
+			}
+			std::sort(vec1.begin(), vec1.end());
+			std::sort(vec2.begin(), vec2.end());
+			return vec1 == vec2;
+		}
+		void testCase1(){
+			stdUst<int> ust1(10);
+			tsUst<int> ust2(10);
+			assert(container_equal(ust1, ust2));
+
+			int arr[] = { 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+			stdUst<int> ust3(std::begin(arr), std::end(arr));
+			tsUst<int> ust4(std::begin(arr), std::end(arr));
+			assert(container_equal(ust3, ust4));
+
+			auto ust5(ust3);
+			auto ust6(ust4);
+			assert(container_equal(ust5, ust6));
+
+			auto ust7 = ust3;
+			auto ust8 = ust4;
+			assert(container_equal(ust7, ust8));
+		}
+		void testCase2(){
+			tsUst<int> ust1(10);
+			assert(ust1.empty());
+			assert(ust1.size() == 0);
+
+			int arr[] = { 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+			tsUst<int> ust2(std::begin(arr), std::end(arr));
+			assert(!ust2.empty());
+			assert(ust2.size() == 10);
+		}
+		void testCase3(){
+			tsUst<std::string> ust1(10);
+			stdUst<std::string> ust2(10);
+			std::random_device rd;
+			for (auto i = 0; i != 100; ++i){
+				auto n = std::to_string(rd() % 65536);
+				ust1.insert(n);
+				ust2.insert(n);
+			}
+			assert(container_equal(ust1, ust2));
+
+			tsUst<int> ust3(10);
+			stdUst<int> ust4(10);
+			std::vector<int> v(200);
+			std::generate(v.begin(), v.end(), [&rd](){return rd() % 65536; });
+			ust3.insert(v.begin(), v.end());
+			ust4.insert(v.begin(), v.end());
+			assert(container_equal(ust3, ust4));
+		}
+		void testCase4(){
+			int arr[] = { 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+			stdUst<int> ust1(std::begin(arr), std::end(arr));
+			tsUst<int> ust2(std::begin(arr), std::end(arr));
+
+			ust1.erase(9);
+			auto n = ust2.erase(9);
+			assert(n == 1);
+			ust1.erase(7);
+			auto it = ust2.find(7);
+			it = ust2.erase(it);
+			assert(it != ust2.end());
+			assert(container_equal(ust1, ust2));
+		}
+		void testCase5(){
+			int arr[] = { 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8, 9 };
+			tsUst<int> ust(std::begin(arr), std::end(arr));
+
+			assert(ust.find(0) != ust.end());
+			assert(ust.count(10) == 0);
+		}
+
+		void testAllCases(){
+			testCase1();
+			testCase2();
+			testCase3();
+			testCase4();
+			testCase5();
+		}
+	}
+}
\ No newline at end of file
diff --git a/TinySTL/Test/Unordered_setTest.h b/TinySTL/Test/Unordered_setTest.h
new file mode 100644
index 0000000..2ee9451
--- /dev/null
+++ b/TinySTL/Test/Unordered_setTest.h
@@ -0,0 +1,32 @@
+#ifndef _UNORDERED_SET_TEST_H_
+#define _UNORDERED_SET_TEST_H_
+
+#include "TestUtil.h"
+
+#include "../Unordered_set.h"
+#include <unordered_set>
+
+#include <algorithm>
+#include <cassert>
+#include <random>
+#include <string>
+#include <vector>
+
+namespace TinySTL{
+	namespace Unordered_setTest{
+		template<class T>
+		using stdUst = std::unordered_set < T > ;
+		template<class T>
+		using tsUst = TinySTL::Unordered_set < T > ;
+
+		void testCase1();
+		void testCase2();
+		void testCase3();
+		void testCase4();
+		void testCase5();
+
+		void testAllCases();
+	}
+}
+
+#endif
\ No newline at end of file
diff --git a/TinySTL/main.cpp b/TinySTL/main.cpp
index 6f0b90e..7f9aeb6 100644
--- a/TinySTL/main.cpp
+++ b/TinySTL/main.cpp
@@ -16,9 +16,9 @@
 #include "Test\StackTest.h"
 #include "Test\StringTest.h"
 #include "Test\SuffixArrayTest.h"
+#include "Test\Unordered_setTest.h"
 #include "Test\VectorTest.h"
 
-using namespace std;
 using namespace TinySTL::Profiler;
 
 int main(){
@@ -35,6 +35,7 @@ int main(){
 	TinySTL::StackTest::testAllCases();
 	TinySTL::StringTest::testAllCases();
 	TinySTL::SuffixArrayTest::testAllCases();
+	TinySTL::Unordered_setTest::testAllCases();
 	TinySTL::VectorTest::testAllCases();
 
 	system("pause");