Example 3 of my JavaScript and React unit tests basics

Example 3.js

describe("deletePost", () => {
    let mockUser;

    beforeEach(() => {
        mockUser = new User({ username: "bob" });

        mockUser.ajax = spy();
    });

    test("calls the REST API method to delete the post", () => {
        mockUser.login();

        mockUser.deletePost();

        expect(mockUser.ajax).to.haveCallCount(1);
    });

    test("doesn't call the REST API method to delete the post if the user is logged out", () => {
        mockUser.logout();

        mockUser.deletePost();

        expect(mockUser.ajax).to.haveCallCount(0);
    });
});