diff --git a/src/app/api/services/spec/numbas-lms.service.spec.ts b/src/app/api/services/spec/numbas-lms.service.spec.ts
new file mode 100644
index 000000000..f456d5a89
--- /dev/null
+++ b/src/app/api/services/spec/numbas-lms.service.spec.ts
@@ -0,0 +1,88 @@
+import { TestBed } from '@angular/core/testing';
+import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
+import { NumbasLmsService } from '../numbas-lms.service';
+import { TaskService } from '../task.service';
+import { UserService } from '../user.service';
+import { of } from 'rxjs';
+
+describe('NumbasLmsService', () => {
+  let service: NumbasLmsService;
+  let httpTestingController: HttpTestingController;
+  let mockUserService: Partial<UserService>;
+  let mockTaskService: Partial<TaskService>;
+
+  const mockUserData = {
+    currentUser: { studentId: '12345' }
+  };
+
+  beforeEach(() => {
+    mockUserService = {
+      currentUser: mockUserData.currentUser
+    };
+
+    mockTaskService = {
+      // you can add mocked methods if needed for the TaskService
+    };
+
+    TestBed.configureTestingModule({
+      imports: [HttpClientTestingModule],
+      providers: [
+        NumbasLmsService,
+        { provide: UserService, useValue: mockUserService },
+        { provide: TaskService, useValue: mockTaskService }
+      ]
+    });
+
+    service = TestBed.inject(NumbasLmsService);
+    httpTestingController = TestBed.inject(HttpTestingController);
+  });
+
+  afterEach(() => {
+    httpTestingController.verify();
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+
+  it('should initialize with default values', () => {
+    expect(service.GetValue('cmi.completion_status')).toBe('not attempted');
+    expect(service.GetValue('cmi.entry')).toBe('ab-initio');
+  });
+
+  describe('Initialize function', () => {
+
+    it('should handle review mode and get latest completed test result', () => {
+      const mockResponse = {
+        data: {
+          exam_data: JSON.stringify({ someData: 'value' })
+        }
+      };
+
+      service.Initialize('review');
+      const req = httpTestingController.expectOne(`${service['apiBaseUrl']}/completed-latest`);
+      expect(req.request.method).toEqual('GET');
+      req.flush(mockResponse);
+
+      expect(service.GetValue('cmi.suspend_data')).toEqual(JSON.stringify({ someData: 'value' }));
+    });
+
+    it('should handle attempt mode and get latest test result', () => {
+      const mockResponse = {
+        data: {
+          id: 1,
+          cmi_entry: 'ab-initio',
+          attempt_number: 2
+        }
+      };
+
+      service.Initialize('attempt');
+      const req = httpTestingController.expectOne(`${service['apiBaseUrl']}/latest`);
+      expect(req.request.method).toEqual('GET');
+      req.flush(mockResponse);
+
+      expect(service.GetValue('cmi.learner_id')).toBe('12345');
+    });
+  });
+
+});