chore: added users service unit tests

backend/src/__tests__/unit/User/DeleteUserService.spec.ts

@@ -0,0 +1,35 @@
+import faker from "faker";
+import AppError from "../../../errors/AppError";
+import CreateUserService from "../../../services/UserServices/CreateUserService";
+import DeleteUserService from "../../../services/UserServices/DeleteUserService";
+import { disconnect, truncate } from "../../utils/database";
+
+describe("User", () => {
+  beforeEach(async () => {
+    await truncate();
+  });
+
+  afterEach(async () => {
+    await truncate();
+  });
+
+  afterAll(async () => {
+    await disconnect();
+  });
+
+  it("should be delete a existing user", async () => {
+    const { id } = await CreateUserService({
+      name: faker.name.findName(),
+      email: faker.internet.email(),
+      password: faker.internet.password()
+    });
+
+    expect(DeleteUserService(id)).resolves.not.toThrow();
+  });
+
+  it("to throw an error if tries to delete a non existing user", async () => {
+    expect(DeleteUserService(faker.random.number())).rejects.toBeInstanceOf(
+      AppError
+    );
+  });
+});