javascript - 开玩笑的测试问题(Jest testing issue)

Question

Hi all I am trying to test the below code using Jest however I am receiving an error of mData not defined when I am running the test.

(大家好，我正在尝试使用Jest测试下面的代码，但是我在运行测试时收到未定义的mData错误。)

Please take a look at the code below and if possible please let me know where I am going wrong here.

(请查看下面的代码，如果可能的话，请让我知道我在哪里出错。)

Thanks in advance.

(提前致谢。)

function createMilkShakeData(mData) {

 }

 describe("milkshake Data Generator", () => {
 it("creates correct data structure ", () => {
  const mData = [
    "milkshake1/milkshake1flavour",
    "milkshake1/milkshake1flavor2",
    "milkshake2/milkshake2flavour",
    "milkshake2/milkshake2flavour2",
    "milkshake1/milkshake1flavour3",
    "flavour3",
    "milkshake3/flavour3flavour1",
    "milkshake4"
  ];

  const expectedResult = [
    {
      title: "milkshake1",
      data: ["milkshake1flavour", "milkshake1flavour2", "milkshake1flavour3"]
    },
    { title: "milkshake2", data: ["milkshake2flavour", "milkshake2flavour2"] },
    { title: "milkshake3", data: ["milkshake3flavour1"] }
  ];

  const actualResult = createMilkShakeData(mData);
  expect(actualResult).toMatchObject(expectedResult);
});
});

module.exports = createMilkShakeData
module.exports = mData

code from test file below

(下面测试文件中的代码)

    const createMilkShakeData = require('./milkshake')

    const data = require('./milkshake')

    test('milkshake Data Generator', () => {

    const actualResult = createMilkShakeData(mData);
  expect(actualResult).toMatchObject(expectedResult)}
  )

  ask by Billy Atim translate from so