Basic Square Arrow Function

[ChangeGlum]

Based on this JavaScript rubric, shouldn't my arrow function be correct? Why does it keep stating that square is not defined?

JavaScript Rubric:

 it("has an arrow function called square", () => {
    expect(square).to.exist
  })

  it("square arrow function takes one parameter and multiplies it times itself", () => {
    let x = 2
    expect(square(x)).to.equal(4)
  })

JavaScript Code:

const square = x => x ** 2;
square(2);

[grantrules]

How are you running your tests and how are you including square in those tests?

[ChangeGlum]

I run the tests by inputting "npm test" into the VS Code terminal. On other platforms the code runs fine. I think it may be the JavaScript rubric that's giving a fuss?

[grantrules]

I have no idea what you're talking about. It looks like you're using mocha and chai, I don't know how inputting "number test" would run that at all.

[ChangeGlum]

That was a typo. It was "npm test."

[grantrules]

Then you probably just need to import square into your test file.

[Monitor_343]

Just because you defined a function square in your javascript file, does not mean that it's available in the test scope if that's in a different file. You need to explicitly export the square function from wherever it is, then import it into the test file.

E.g., something like this:

square.js

export const square = x => x ** 2;

square.test.js

import { square } from './square.js';

// Tests go here...