arrays - 如何让我的测试将非多维数组传递给我的 React 测试?
问题描述
我有一个正在编写测试的实用程序方法,并且我正在尝试传递参数以准确描述使用情况并生成非多维数组。这是我的代码
const arrayInsert = (arr: any[], index: number, ...newItems) => [
...arr.slice(0, index),
...newItems,
...arr.slice(index)
];
export default arrayInsert;
如您所见,最后一个参数是spread
运算符。现在我将参数传递给我的测试,以生成一个多维数组,而不是像这个例子一样添加到数组中:
arrayInsert(["A", "B", "F"], 1, "C", "D", "E");
// produces
["A", "C", "D", "E", "B", "F"]
import arrayInsert from "./arrayInsert";
describe("arrayInsert", () => {
it("should return array containing an array of new items", () => {
const arr = ["A", "B", "F"];
const newItems = ["C", "D", "E"];
const index = 1;
const expected = ["A", ["C", "D", "E"], "B", "F"];
expect(arrayInsert(arr, index, newItems)).toEqual(expected);
});
});
我怎样才能使结果一维?