Question

我正在使用Jest编写测试并模拟调用HTTP请求的函数。

import { mocked } from "ts-jest/utils";
import * as pull from "../src/pull";
import fs = require("fs");

// read the reponse data from a file.
const response = JSON.parse(
  fs.readFileSync("./__fixtures__/pr.json", "utf8")
);

// have jest mock the function and set it's response.
jest.mock("../src/pull");
const mockedCoeus = mocked(pull.getPullRequest, true);

mockedCoeus.mockImplementation(async () => {
  return response as any;
});

// write the test.
describe("#get details for a PR", () => {
  it("should load user data", async () => {
    const data = await pull.getPullRequest(165, "data-ios");
    expect(data).toBeDefined();
    expect(data.updated_at).toEqual("2020-04-10T16:46:30Z");
  });
});

测试通过了，但是，运行npm jest时出现以下错误

TypeError: mockedCoeus.mockImplementation is not a function

我查看了其他报告的错误，这些错误与jest.mock的位置有关，但是，这里似乎不是这样。为什么会引发此错误，但是测试通过了？我该如何解决？

开玩笑嘲笑Coeus.mockImplementation抛出TypeError

0 个答案: