block32.ts

import * as TasksApi from "../../src/api/tasks";
import axios from 'axios';

describe("tasks api", () => {
  beforeEach(() => {
    axios.get = jest.fn();
  });

  it("maps fetched tasks into response", () => {
    const tasks = [];
    axios.get.mockReturnValueOnce(Promise.resolve({data: tasks}));
    return expect(TasksApi.fetchTasks()).resolves.toEqual(tasks);
  });

  it("hands errors down", () => {
    const error = {};
    axios.get.mockReturnValueOnce(Promise.reject(error));
    return expect(TasksApi.fetchTasks()).rejects.toEqual(error);
  });
});