Use Jest mock functions

packages/microservice/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@autoplex/microservice",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "main": "dist/lib/index.js",
   "types": "dist/typings/index.d.ts",
   "license": "MIT",

packages/microservice/test/integration/internal-services.test.ts

@@ -2,12 +2,9 @@ import { ExitCode, InternalService, Microservice, MicroserviceState } from "../.
 
 class MockService<M extends Microservice> extends InternalService<M> {
 	public NAME = "Mock Service";
-	public hasBooted = false;
-	public hasStarted = false;
-	public hasShutdown = false;
-	public override async boot() { this.hasBooted = true; }
-	public override async start() { this.hasStarted = true; }
-	public override async shutdown() { this.hasShutdown = true; }
+	public override boot = jest.fn();
+	public override start = jest.fn();
+	public override shutdown = jest.fn();
 }
 
 class MockServiceBootFail<M extends Microservice> extends InternalService<M> {
@@ -38,9 +35,9 @@ describe("Microservice/Internal Service Integration", () => {
 		let executing = microservice.exec();
 		microservice.on("ready", () => microservice.quit());
 		await executing;
-		expect(microservice.service(MockService).hasBooted).toBe(true);
-		expect(microservice.service(MockService).hasStarted).toBe(true);
-		expect(microservice.service(MockService).hasShutdown).toBe(true);
+		expect(microservice.service(MockService).boot).toHaveBeenCalled();
+		expect(microservice.service(MockService).start).toHaveBeenCalled();
+		expect(microservice.service(MockService).shutdown).toHaveBeenCalled();
 	});
 	test("Trigger boot failure", async () => {
 		let microservice = new Microservice();