Question

我使用的是create-react-app打字机启动器，但我发现道具无法正常工作。我在做错什么吗？

import * as enzyme from "enzyme";
import * as React from "react";
import Box from "./Box";

describe("Box component", () => {
  let wrapper: any;

  beforeEach(() => {
    wrapper = enzyme.shallow(<Box x={0} y={2} />);
  });

  it("should not render without x", () => {
    expect(wrapper.props().x).toBe(0);
  });
});

这是我遇到的错误。

expect(received).toBe(expected) // Object.is equality

    Expected value to be:
      0
    Received:
      undefined

    Difference:

Answer 1

it("should not render without x", () => {
    expect(wrapper.prop('x')).toBe(0);
  });

使用prop（）代替props（）

访问props（）。x返回未定义

1 个答案: