标签: react-wrapper

将React元素传递到“ mount”函数时出现此错误：

it("Book - move book to a shelf should work", () => {
    let test = (<Book book={book} />);
    let component = mount(test);
    const select = component.find("select").first();
    expect(select).toBeDefined();

但是，如果我删除变量并将元素直接传递给方法，它将起作用。

it("Book - move book to a shelf should work", () => {
    let component = mount(<Book book={book} />);
    const select = component.find("select").first();
    expect(select).toBeDefined();

它们有何不同？

更新：由于某种原因，此方法（来自Jest的renderer.create）没有抱怨：

let component = renderer.create(<Book onMoveBook={onMoveBook} book={book} />);
const tree = component.toJSON(); // Works fine.

同样，令人惊讶的是，将变量转换为函数并将其传递给React.createElement也起作用了：

var test = React.createElement(() => <Book onMoveBook={onMoveBook} book={book} …