diff --git a/src/test/java/hibernateTest/models/Groups.java b/src/test/java/hibernateTest/models/Groups.java
new file mode 100644
index 0000000..7d08be1
--- /dev/null
+++ b/src/test/java/hibernateTest/models/Groups.java
@@ -0,0 +1,114 @@
+package hibernateTest.models;
+
+import com.example.cosmos_serversb.entities.Group;
+import com.example.cosmos_serversb.entities.Request;
+import com.example.cosmos_serversb.models.DeleteResult;
+
+import javax.inject.Singleton;
+import java.util.HashMap;
+
+
+@Singleton
+public class Groups {
+    private static Groups theInstance = null;
+
+    private Groups(){
+
+    }
+
+    public static Groups getInstance(){
+        if(theInstance == null){
+            theInstance = new Groups();
+        }
+        return theInstance;
+    }
+
+    public static HashMap<String, String> getGroupsListByUid(String uId){
+        return createTestHashMap();
+    }
+
+    public static Group createGroup(String name, String uId){
+        //先にGidとuriの発行を行う
+        Group testGroup = new Group("123456789", "http://test.com", name, uId);
+
+        return testGroup;
+    }
+
+    public static Group getGroupByGid(String gId){
+        Group editGroup;
+        /*
+        for (int i = 0; i < groups.size(); i++) {
+            editGroup = groups.get(i);
+            if (editGroup.getgId().equals(gId)) {
+                return editGroup;
+            }
+        }
+        */
+        return null;
+    }
+
+    public static DeleteResult deleteGroup(String gId){
+        Group editGroup = Groups.getInstance().getGroupByGid(gId);
+        if(editGroup == null){
+            return DeleteResult.FAILURE;
+        }
+        //以下に削除処理を行う。
+        return DeleteResult.SUCCESS;
+    }
+
+    public static HashMap<String, String> getMembersListByGid(String gId){
+        return createTestHashMap();
+    }
+
+    public static HashMap<String, String> addMember(String gId, String uId){
+        return createTestHashMap();
+    }
+
+    public static HashMap<String, String> deleteMember(String gId, String uId){
+        return createTestHashMap();
+    }
+
+    public static HashMap<String, String> getRequestsListByGid(String gId){
+        return createTestHashMap();
+    }
+
+    public static Request addRequests(String gId, String uId, String product, String deadline, int location){
+        //テスト用
+        Request testRequest = new Request("123456789", "http://test.com", "1999/01/01/15:00:00",
+                                            uId, product, "1999/01/01/15:00:00", 999);
+        return testRequest;
+    }
+
+    public static Request getRequestDetailByGidAndRid(String gId, String rId){
+        return null;
+    }
+
+    public static Request updateRequest(String gId, String rId, String uId, String product, String deadline, int location, boolean done){
+
+        //テスト用
+        Request testRequest = new Request("123456789", "http://test.com", "1999/01/01/15:00:00",
+                                            uId, product, "1999/01/01/15:00:00", 999);
+
+        return testRequest;
+    }
+
+    public static DeleteResult deleteRequest(String gId, String rId){
+        return DeleteResult.SUCCESS;
+    }
+
+    //テスト用にHashMapの作成
+    public static HashMap<String, String> createTestHashMap(){
+        HashMap<String, String> testMap = new HashMap<>();
+        testMap.put("123456780", "http://test0.com");
+        testMap.put("123456781", "http://test1.com");
+        testMap.put("123456782", "http://test2.com");
+        /*
+        //Key, valueの取り出し方例(拡張for文)
+        for (String key : TestMap.keySet()) {
+            System.out.println(key + " " + TestMap.get(key));
+        }
+        */
+        return testMap;
+    }
+
+}