diff --git a/src/modules/user-segment/user-segment.service.spec.ts b/src/modules/user-segment/user-segment.service.spec.ts
index fa7cb49..76d2cff 100644
--- a/src/modules/user-segment/user-segment.service.spec.ts
+++ b/src/modules/user-segment/user-segment.service.spec.ts
@@ -1,18 +1,155 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { UserSegmentService } from './user-segment.service';
+import { PrismaService } from '../../global-services/prisma.service';
 
-describe.skip('UserSegmentService', () => {
+describe('UserSegmentService', () => {
   let service: UserSegmentService;
 
+  const mockUserSegment = {
+    id: '123',
+    createdAt: 10000,
+    updatedAt: 10000,
+    name: 'mockUserSegment',
+    all: {
+      connect: {
+        id: 7,
+      },
+    },
+    byPhone: {
+      connect: {
+        id: 8,
+      },
+    },
+    byId: {
+      connect: {
+        id: 9,
+      },
+    },
+  };
+
+  const mockUserSegmentService = {
+    userSegment: {
+      create: jest.fn(async (userSegment) => {
+        return {
+          id: '123',
+          createdAt: 10000,
+          updatedAt: 10000,
+          name: userSegment.data.name,
+          all: {
+            connect: {
+              id: 7,
+            },
+          },
+          byPhone: {
+            connect: {
+              id: 8,
+            },
+          },
+          byId: {
+            connect: {
+              id: 9,
+            },
+          },
+        };
+      }),
+
+      findUnique: jest.fn((filter) => {
+        const resp = { ...mockUserSegment };
+        resp.id = filter.where.id;
+        return resp;
+      }),
+
+      findMany: jest.fn().mockReturnValue([{ ...mockUserSegment }]),
+    },
+    adapter: {
+      update: jest.fn((payload) => {
+        return {
+          id: payload.where.id,
+          createdAt: 10000,
+          updatedAt: 10000,
+          ...payload.data,
+        };
+      }),
+    },
+  };
+
   beforeEach(async () => {
     const module: TestingModule = await Test.createTestingModule({
-      providers: [UserSegmentService],
+      providers: [
+        UserSegmentService,
+        {
+          provide: PrismaService,
+          useValue: mockUserSegmentService,
+        },
+      ],
     }).compile();
 
     service = module.get<UserSegmentService>(UserSegmentService);
   });
 
-  it('should be defined', () => {
-    expect(service).toBeDefined();
+  describe('create', () => {
+    it('should successfully create a user segment', async () => {
+      const userSegment = {
+        name: 'mockUserSegment',
+        all: 7,
+        phone: 8,
+        ID: 9,
+      };
+      expect(await service.create(userSegment)).toEqual({ ...mockUserSegment });
+      expect(mockUserSegmentService.userSegment.create).toHaveBeenCalled;
+    });
+  });
+
+  describe('findOne', () => {
+    it('should return specific user info', () => {
+      const resp = { ...mockUserSegment };
+      resp.id = '567';
+      expect(service.findOne('567')).toEqual({ ...resp });
+      expect(mockUserSegmentService.userSegment.findUnique).toHaveBeenCalled;
+    });
+  });
+
+  describe('findAll', () => {
+    it('should return array of all user segment object', () => {
+      expect(service.findAll()).toEqual([{ ...mockUserSegment }]);
+      expect(mockUserSegmentService.userSegment.findMany).toHaveBeenCalled;
+    });
+  });
+
+  describe('update', () => {
+    it('should successfully update user segment', () => {
+      const resp = { ...mockUserSegment };
+      resp.name = 'updatedName';
+      expect(
+        service.update('123', {
+          name: 'updatedName',
+          all: {
+            connect: {
+              id: 7,
+            },
+          },
+          byPhone: {
+            connect: {
+              id: 8,
+            },
+          },
+          byId: {
+            connect: {
+              id: 9,
+            },
+          },
+        }),
+      ).toEqual({ ...resp });
+      expect(mockUserSegmentService.adapter.update).toHaveBeenCalled;
+    });
+  });
+
+  describe('remove', () => {
+    it('should remove user segment object', () => {
+      const id = '123';
+      expect(service.remove('123')).toEqual(
+        `This action removes a #${id} adapter`,
+      );
+    });
   });
 });